20130627 @Wheel Lab Talk About Python

1. @ WheelLab 2013.06.27
Python
郭至軒（KuoE0）
KuoE0.tw@gmail.com
KuoE0.ch

2. Latest update: Jun 30, 2013
Attribution-ShareAlike 3.0 Unported
(CC BY-SA 3.0)
http://creativecommons.org/licenses/by-sa/3.0/

3. What is Python?

4. What is Python?
a programming language

5. What is Python?
easy to Read
easy to Learn
easy to Write
a programming language

6. Position
May 2013
Position
May 2012
Delta in
Position
Programming Language
1 1 = C
2 2 = Java
3 4 ↑ Objective-C
4 3 ↓ C++
5 5 = C#
6 6 = PHP
7 7 = Visual Basic
8 8 = Python
9 9 = Perl
10 11 ↑ Ruby
http://www.tiobe.com/index.php/content/paperinfo/tpci/index.html
Top Language in TIOBE

7. Javascript
Ruby
Java
Python
Shell
PHP
C
C++
Perl
Objective-C
0% 5% 10% 15% 20% 25%
3%
4%
5%
6%
7%
8%
8%
8%
12%
21%
Top Languages in Github
https://github.com/languages

8. Javascript
Ruby
Java
Python
Shell
PHP
C
C++
Perl
Objective-C
0% 5% 10% 15% 20% 25%
3%
4%
5%
6%
7%
8%
8%
8%
12%
21%
Top Languages in Github
https://github.com/languages

9. What does the logo mean?

10. 界 Kingdom 動物界 Animalia
門 Phylum 脊索動物門 Chordata
綱 Class 爬蟲科 Reptilia
目 Order 有鱗目 Squamata
科 Family 蟒科 Pythonidae
屬 Genus 蟒屬 Python

11. http://wallpapers.free-review.net/15__Tree_python.htm

12. http://wallpapers.free-review.net/15__Tree_python.htm

13. More About Python...

14. More About Python...
Interpreted Language
Do not need to compile!

15. Compiled Language
compiler execute

16. Interpreted Language
execute
But, interpret in execution time.
And, it would be slow...

17. More About Python...
Object-Oriented Language
Everything in Python is object!

18. number
function
string
list
Object

19. number
function
string
list
Object

20. overloading
polymorphism
inheritance
multiple inheritance

21. More About Python...
Imperative Programming
Generic Programming
Functional Programming

22. Philosophy

23. There should be one—
and preferably only one
—obvious way to do it.
Philosophy

24. There should be one—
and preferably only one
—obvious way to do it.
Philosophy
There should be one—
and preferably only one
—obvious way to do it.

25. $
Zen of Python

26. $$ python -ic “”
Zen of Python

27. $$ python -ic “”$ python -ic “”
>>>
Zen of Python

28. $$ python -ic “”$ python -ic “”
>>>
$ python -ic “”
>>> import this
Zen of Python

29. $$ python -ic “”$ python -ic “”
>>>
$ python -ic “”
>>> import this
$ python -ic “”
>>> import this
The Zen of Python, by Tim Peters
Beautiful is better than ugly.
Explicit is better than implicit.
Simple is better than complex.
Complex is better than complicated.
Flat is better than nested.
Sparse is better than dense.
Readability counts.
Special cases aren't special enough to
>>> import this
The Zen of Python, by Tim Peters
Beautiful is better than ugly.
Explicit is better than implicit.
Simple is better than complex.
Complex is better than complicated.
Flat is better than nested.
Sparse is better than dense.
Readability counts.
Special cases aren't special enough to
break the rules.
The Zen of Python, by Tim Peters
Beautiful is better than ugly.
Explicit is better than implicit.
Simple is better than complex.
Complex is better than complicated.
Flat is better than nested.
Sparse is better than dense.
Readability counts.
Special cases aren't special enough to
break the rules.
Although practicality beats purity.
Beautiful is better than ugly.
Explicit is better than implicit.
Simple is better than complex.
Complex is better than complicated.
Flat is better than nested.
Sparse is better than dense.
Readability counts.
Special cases aren't special enough to
break the rules.
Although practicality beats purity.
Errors should never pass silently.
Beautiful is better than ugly.
Explicit is better than implicit.
Simple is better than complex.
Complex is better than complicated.
Flat is better than nested.
Sparse is better than dense.
Readability counts.
Special cases aren't special enough to
break the rules.
Although practicality beats purity.
Errors should never pass silently.
Unless explicitly silenced.
Explicit is better than implicit.
Simple is better than complex.
Complex is better than complicated.
Flat is better than nested.
Sparse is better than dense.
Readability counts.
Special cases aren't special enough to
break the rules.
Although practicality beats purity.
Errors should never pass silently.
Unless explicitly silenced.
In the face of ambiguity, refuse the
Simple is better than complex.
Complex is better than complicated.
Flat is better than nested.
Sparse is better than dense.
Readability counts.
Special cases aren't special enough to
break the rules.
Although practicality beats purity.
Errors should never pass silently.
Unless explicitly silenced.
In the face of ambiguity, refuse the
temptation to guess.
Complex is better than complicated.
Flat is better than nested.
Sparse is better than dense.
Readability counts.
Special cases aren't special enough to
break the rules.
Although practicality beats purity.
Errors should never pass silently.
Unless explicitly silenced.
In the face of ambiguity, refuse the
temptation to guess.
There should be one-- and preferably only
Flat is better than nested.
Sparse is better than dense.
Readability counts.
Special cases aren't special enough to
break the rules.
Although practicality beats purity.
Errors should never pass silently.
Unless explicitly silenced.
In the face of ambiguity, refuse the
temptation to guess.
There should be one-- and preferably only
one --obvious way to do it.
Sparse is better than dense.
Readability counts.
Special cases aren't special enough to
break the rules.
Although practicality beats purity.
Errors should never pass silently.
Unless explicitly silenced.
In the face of ambiguity, refuse the
temptation to guess.
There should be one-- and preferably only
one --obvious way to do it.
Although that way may not be obvious at
Readability counts.
Special cases aren't special enough to
break the rules.
Although practicality beats purity.
Errors should never pass silently.
Unless explicitly silenced.
In the face of ambiguity, refuse the
temptation to guess.
There should be one-- and preferably only
one --obvious way to do it.
Although that way may not be obvious at
first unless you're Dutch.
Special cases aren't special enough to
break the rules.
Although practicality beats purity.
Errors should never pass silently.
Unless explicitly silenced.
In the face of ambiguity, refuse the
temptation to guess.
There should be one-- and preferably only
one --obvious way to do it.
Although that way may not be obvious at
first unless you're Dutch.
Now is better than never.
break the rules.
Although practicality beats purity.
Errors should never pass silently.
Unless explicitly silenced.
In the face of ambiguity, refuse the
temptation to guess.
There should be one-- and preferably only
one --obvious way to do it.
Although that way may not be obvious at
first unless you're Dutch.
Now is better than never.
Although never is often better than *right*
Although practicality beats purity.
Errors should never pass silently.
Unless explicitly silenced.
In the face of ambiguity, refuse the
temptation to guess.
There should be one-- and preferably only
one --obvious way to do it.
Although that way may not be obvious at
first unless you're Dutch.
Now is better than never.
Although never is often better than *right*
now.
Errors should never pass silently.
Unless explicitly silenced.
In the face of ambiguity, refuse the
temptation to guess.
There should be one-- and preferably only
one --obvious way to do it.
Although that way may not be obvious at
first unless you're Dutch.
Now is better than never.
Although never is often better than *right*
now.
If the implementation is hard to explain,
Unless explicitly silenced.
In the face of ambiguity, refuse the
temptation to guess.
There should be one-- and preferably only
one --obvious way to do it.
Although that way may not be obvious at
first unless you're Dutch.
Now is better than never.
Although never is often better than *right*
now.
If the implementation is hard to explain,
it's a bad idea.
In the face of ambiguity, refuse the
temptation to guess.
There should be one-- and preferably only
one --obvious way to do it.
Although that way may not be obvious at
first unless you're Dutch.
Now is better than never.
Although never is often better than *right*
now.
If the implementation is hard to explain,
it's a bad idea.
If the implementation is easy to explain,
temptation to guess.
There should be one-- and preferably only
one --obvious way to do it.
Although that way may not be obvious at
first unless you're Dutch.
Now is better than never.
Although never is often better than *right*
now.
If the implementation is hard to explain,
it's a bad idea.
If the implementation is easy to explain,
it may be a good idea.
There should be one-- and preferably only
one --obvious way to do it.
Although that way may not be obvious at
first unless you're Dutch.
Now is better than never.
Although never is often better than *right*
now.
If the implementation is hard to explain,
it's a bad idea.
If the implementation is easy to explain,
it may be a good idea.
Namespaces are one honking great idea --
one --obvious way to do it.
Although that way may not be obvious at
first unless you're Dutch.
Now is better than never.
Although never is often better than *right*
now.
If the implementation is hard to explain,
it's a bad idea.
If the implementation is easy to explain,
it may be a good idea.
Namespaces are one honking great idea --
let's do more of those!
one --obvious way to do it.
Although that way may not be obvious at
first unless you're Dutch.
Now is better than never.
Although never is often better than *right*
now.
If the implementation is hard to explain,
it's a bad idea.
If the implementation is easy to explain,
it may be a good idea.
Namespaces are one honking great idea --
let's do more of those!
Although that way may not be obvious at
first unless you're Dutch.
Now is better than never.
Although never is often better than *right*
now.
If the implementation is hard to explain,
it's a bad idea.
If the implementation is easy to explain,
it may be a good idea.
Namespaces are one honking great idea --
let's do more of those!
>>>
Zen of Python

30. Current Situation

31. Current Situation
Python 2.x Python 3.x

32. Current Situation
Python 2.x Python 3.x
Coexist!

33. Current Situation
Python 2.x Python 3.x
Coexist!

34. Current Situation
Python 2.x Python 3.x
Coexist!
backwards-incompatible

35. Python 2.x Python 3.x
2.7.x is the latest version under development
more 3-party library 2to3.py
built-in on many OS more supported unicode
the past in someday the future in someday

36. http://www.ibm.com/developerworks/cn/linux/l-python3-1/
Python 3 的新特性

37. Python 2.x

38. Python 2.x
Today, Let’s Talk About

39. Environment

40. Environment
For Unix-like OS User,
Python 2.x is Built-in!

41. Environment
For Windows User,
Download From
http://www.python.org/download/
if you want to launch Python in command line,
add the path of Python binary file into PATH variable.

42. $
Check Version of Python

43. $
Check Version of Python
$ python --version

44. $
Check Version of Python
$ python --version$ python --version
Python 2.7.5

45. $
Check Version of Python
$ python --version$ python --version
Python 2.7.5
2.7.5 is released on May 15, 2013

46. $
Check Version of Python

47. $$ python
Check Version of Python

48. $$ python$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>>
Check Version of Python

49. $$ python$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>>
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>>
Check Version of Python

50. $
Interactive Shell

51. $$ python
Interactive Shell

52. $$ python$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>>
Interactive Shell

53. $$ python$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>>
Interactive Shell
prompt

54. $$ python$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>>
Interactive Shell
prompt
means that your turn!

55. $
Interactive Shell

56. $$ python
Interactive Shell

57. $$ python$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>>
Interactive Shell

58. $$ python$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>>
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
Interactive Shell

59. $$ python$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>>
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>>
Interactive Shell

60. $$ python$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>>
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>>
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
Interactive Shell

61. $$ python$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>>
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>>
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>>
Interactive Shell

62. $$ python$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>>
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>>
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>>
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
Interactive Shell

63. $$ python$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>>
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>>
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>>
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>>
Interactive Shell

64. $$ python$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>>
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>>
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>>
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>>
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
Interactive Shell

65. $$ python$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>>
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>>
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>>
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>>
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>>
Interactive Shell

66. $$ python$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>>
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>>
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>>
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>>
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>>
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>> x + y
Interactive Shell

67. $$ python$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>>
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>>
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>>
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>>
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>>
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>> x + y
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>> x + y
300
>>>
Interactive Shell

68. $$ python$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>>
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>>
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>>
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>>
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>>
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>> x + y
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>> x + y
300
>>>
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>> x + y
300
>>> for i in range(5):
Interactive Shell

69. $$ python$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>>
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>>
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>>
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>>
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>>
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>> x + y
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>> x + y
300
>>>
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>> x + y
300
>>> for i in range(5):
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>> x + y
300
>>> for i in range(5):
...
Interactive Shell

70. $$ python$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>>
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>>
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>>
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>>
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>>
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>> x + y
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>> x + y
300
>>>
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>> x + y
300
>>> for i in range(5):
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>> x + y
300
>>> for i in range(5):
...
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>> x + y
300
>>> for i in range(5):
... print i
Interactive Shell

71. $$ python$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>>
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>>
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>>
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>>
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>>
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>> x + y
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>> x + y
300
>>>
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>> x + y
300
>>> for i in range(5):
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>> x + y
300
>>> for i in range(5):
...
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>> x + y
300
>>> for i in range(5):
... print i
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>> x + y
300
>>> for i in range(5):
... print i
...
Interactive Shell

72. $$ python$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>>
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>>
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>>
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>>
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>>
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>> x + y
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>> x + y
300
>>>
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>> x + y
300
>>> for i in range(5):
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>> x + y
300
>>> for i in range(5):
...
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>> x + y
300
>>> for i in range(5):
... print i
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>> x + y
300
>>> for i in range(5):
... print i
...
>>> y = 200
>>> x + y
300
>>> for i in range(5):
... print i
...
0
1
2
3
4
>>>
Interactive Shell

73. $$ python$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>>
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>>
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>>
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>>
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>>
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>> x + y
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>> x + y
300
>>>
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>> x + y
300
>>> for i in range(5):
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>> x + y
300
>>> for i in range(5):
...
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>> x + y
300
>>> for i in range(5):
... print i
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>> x + y
300
>>> for i in range(5):
... print i
...
>>> y = 200
>>> x + y
300
>>> for i in range(5):
... print i
...
0
1
2
3
4
>>>
>>> y = 200
>>> x + y
300
>>> for i in range(5):
... print i
...
0
1
2
3
4
>>> exit()
Interactive Shell

74. $$ python$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>>
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>>
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>>
$ python
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>>
Python 2.7.5 (default, May 20 2013,
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>>
23:41:46)
[GCC 4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>> x + y
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>> x + y
300
>>>
(clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>> x + y
300
>>> for i in range(5):
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>> x + y
300
>>> for i in range(5):
...
Type "help", "copyright", "credits" or
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>> x + y
300
>>> for i in range(5):
... print i
"license" for more information.
>>> 1 + 2 + 3
6
>>> “Hello World”
‘Hello World’
>>> x = 100
>>> y = 200
>>> x + y
300
>>> for i in range(5):
... print i
...
>>> y = 200
>>> x + y
300
>>> for i in range(5):
... print i
...
0
1
2
3
4
>>>
>>> y = 200
>>> x + y
300
>>> for i in range(5):
... print i
...
0
1
2
3
4
>>> exit()
>>> x + y
300
>>> for i in range(5):
... print i
...
0
1
2
3
4
>>> exit()
$
Interactive Shell

75. Hello World!

76. Hello World!
if __name__ == “__main__”:
print “Hello World!”
helloworld.py

77. $
Hello World!

78. $
Hello World!
$ python helloworld.py

79. $
Hello World!
$ python helloworld.py$ python helloworld.py
Hello World!
$

80. A Python Code

81. A Python Code
def mul(x, y):
ret = x * y
return ret
for i in range(10)[2:]:
for j in range(10)[1:]:
print "{0} x {1} = {2}".format(i, j,
mul(i, j))
9x9table.py

82. script language
def mul(x, y):
ret = x * y
return ret
for i in range(10)[2:]:
for j in range(10)[1:]:
print "{0} x {1} = {2}".format(i, j,
mul(i, j))
no specified entry point

83. $
script language

84. $
script language
$ python 9x9table.py

85. $
script language
$ python 9x9table.py$ python 9x9table.py
2 x 1 = 2
2 x 2 = 4
2 x 3 = 6
2 x 4 = 8
2 x 5 = 10
2 x 6 = 12
2 x 7 = 14
2 x 8 = 16
2 x 9 = 18
3 x 1 = 3
3 x 2 = 6
3 x 3 = 9
2 x 1 = 2
2 x 2 = 4
2 x 3 = 6
2 x 4 = 8
2 x 5 = 10
2 x 6 = 12
2 x 7 = 14
2 x 8 = 16
2 x 9 = 18
3 x 1 = 3
3 x 2 = 6
3 x 3 = 9
3 x 4 = 12
2 x 2 = 4
2 x 3 = 6
2 x 4 = 8
2 x 5 = 10
2 x 6 = 12
2 x 7 = 14
2 x 8 = 16
2 x 9 = 18
3 x 1 = 3
3 x 2 = 6
3 x 3 = 9
3 x 4 = 12
3 x 5 = 15
2 x 3 = 6
2 x 4 = 8
2 x 5 = 10
2 x 6 = 12
2 x 7 = 14
2 x 8 = 16
2 x 9 = 18
3 x 1 = 3
3 x 2 = 6
3 x 3 = 9
3 x 4 = 12
3 x 5 = 15
3 x 6 = 18
2 x 4 = 8
2 x 5 = 10
2 x 6 = 12
2 x 7 = 14
2 x 8 = 16
2 x 9 = 18
3 x 1 = 3
3 x 2 = 6
3 x 3 = 9
3 x 4 = 12
3 x 5 = 15
3 x 6 = 18
3 x 7 = 21
2 x 5 = 10
2 x 6 = 12
2 x 7 = 14
2 x 8 = 16
2 x 9 = 18
3 x 1 = 3
3 x 2 = 6
3 x 3 = 9
3 x 4 = 12
3 x 5 = 15
3 x 6 = 18
3 x 7 = 21
3 x 8 = 24
2 x 6 = 12
2 x 7 = 14
2 x 8 = 16
2 x 9 = 18
3 x 1 = 3
3 x 2 = 6
3 x 3 = 9
3 x 4 = 12
3 x 5 = 15
3 x 6 = 18
3 x 7 = 21
3 x 8 = 24
3 x 9 = 27
2 x 7 = 14
2 x 8 = 16
2 x 9 = 18
3 x 1 = 3
3 x 2 = 6
3 x 3 = 9
3 x 4 = 12
3 x 5 = 15
3 x 6 = 18
3 x 7 = 21
3 x 8 = 24
3 x 9 = 27
4 x 1 = 4
2 x 8 = 16
2 x 9 = 18
3 x 1 = 3
3 x 2 = 6
3 x 3 = 9
3 x 4 = 12
3 x 5 = 15
3 x 6 = 18
3 x 7 = 21
3 x 8 = 24
3 x 9 = 27
4 x 1 = 4
4 x 2 = 8
2 x 9 = 18
3 x 1 = 3
3 x 2 = 6
3 x 3 = 9
3 x 4 = 12
3 x 5 = 15
3 x 6 = 18
3 x 7 = 21
3 x 8 = 24
3 x 9 = 27
4 x 1 = 4
4 x 2 = 8
4 x 3 = 12
3 x 1 = 3
3 x 2 = 6
3 x 3 = 9
3 x 4 = 12
3 x 5 = 15
3 x 6 = 18
3 x 7 = 21
3 x 8 = 24
3 x 9 = 27
4 x 1 = 4
4 x 2 = 8
4 x 3 = 12
4 x 4 = 16
3 x 2 = 6
3 x 3 = 9
3 x 4 = 12
3 x 5 = 15
3 x 6 = 18
3 x 7 = 21
3 x 8 = 24
3 x 9 = 27
4 x 1 = 4
4 x 2 = 8
4 x 3 = 12
4 x 4 = 16
4 x 5 = 20
3 x 3 = 9
3 x 4 = 12
3 x 5 = 15
3 x 6 = 18
3 x 7 = 21
3 x 8 = 24
3 x 9 = 27
4 x 1 = 4
4 x 2 = 8
4 x 3 = 12
4 x 4 = 16
4 x 5 = 20
4 x 6 = 24
3 x 4 = 12
3 x 5 = 15
3 x 6 = 18
3 x 7 = 21
3 x 8 = 24
3 x 9 = 27
4 x 1 = 4
4 x 2 = 8
4 x 3 = 12
4 x 4 = 16
4 x 5 = 20
4 x 6 = 24
4 x 7 = 28
3 x 5 = 15
3 x 6 = 18
3 x 7 = 21
3 x 8 = 24
3 x 9 = 27
4 x 1 = 4
4 x 2 = 8
4 x 3 = 12
4 x 4 = 16
4 x 5 = 20
4 x 6 = 24
4 x 7 = 28
4 x 8 = 32
3 x 6 = 18
3 x 7 = 21
3 x 8 = 24
3 x 9 = 27
4 x 1 = 4
4 x 2 = 8
4 x 3 = 12
4 x 4 = 16
4 x 5 = 20
4 x 6 = 24
4 x 7 = 28
4 x 8 = 32
4 x 9 = 36
3 x 7 = 21
3 x 8 = 24
3 x 9 = 27
4 x 1 = 4
4 x 2 = 8
4 x 3 = 12
4 x 4 = 16
4 x 5 = 20
4 x 6 = 24
4 x 7 = 28
4 x 8 = 32
4 x 9 = 36
5 x 1 = 5
3 x 8 = 24
3 x 9 = 27
4 x 1 = 4
4 x 2 = 8
4 x 3 = 12
4 x 4 = 16
4 x 5 = 20
4 x 6 = 24
4 x 7 = 28
4 x 8 = 32
4 x 9 = 36
5 x 1 = 5
5 x 2 = 10
3 x 9 = 27
4 x 1 = 4
4 x 2 = 8
4 x 3 = 12
4 x 4 = 16
4 x 5 = 20
4 x 6 = 24
4 x 7 = 28
4 x 8 = 32
4 x 9 = 36
5 x 1 = 5
5 x 2 = 10
5 x 3 = 15
4 x 1 = 4
4 x 2 = 8
4 x 3 = 12
4 x 4 = 16
4 x 5 = 20
4 x 6 = 24
4 x 7 = 28
4 x 8 = 32
4 x 9 = 36
5 x 1 = 5
5 x 2 = 10
5 x 3 = 15
5 x 4 = 20
4 x 2 = 8
4 x 3 = 12
4 x 4 = 16
4 x 5 = 20
4 x 6 = 24
4 x 7 = 28
4 x 8 = 32
4 x 9 = 36
5 x 1 = 5
5 x 2 = 10
5 x 3 = 15
5 x 4 = 20
5 x 5 = 25
4 x 3 = 12
4 x 4 = 16
4 x 5 = 20
4 x 6 = 24
4 x 7 = 28
4 x 8 = 32
4 x 9 = 36
5 x 1 = 5
5 x 2 = 10
5 x 3 = 15
5 x 4 = 20
5 x 5 = 25
5 x 6 = 30
4 x 4 = 16
4 x 5 = 20
4 x 6 = 24
4 x 7 = 28
4 x 8 = 32
4 x 9 = 36
5 x 1 = 5
5 x 2 = 10
5 x 3 = 15
5 x 4 = 20
5 x 5 = 25
5 x 6 = 30
5 x 7 = 35
4 x 5 = 20
4 x 6 = 24
4 x 7 = 28
4 x 8 = 32
4 x 9 = 36
5 x 1 = 5
5 x 2 = 10
5 x 3 = 15
5 x 4 = 20
5 x 5 = 25
5 x 6 = 30
5 x 7 = 35
5 x 8 = 40
4 x 6 = 24
4 x 7 = 28
4 x 8 = 32
4 x 9 = 36
5 x 1 = 5
5 x 2 = 10
5 x 3 = 15
5 x 4 = 20
5 x 5 = 25
5 x 6 = 30
5 x 7 = 35
5 x 8 = 40
5 x 9 = 45
4 x 7 = 28
4 x 8 = 32
4 x 9 = 36
5 x 1 = 5
5 x 2 = 10
5 x 3 = 15
5 x 4 = 20
5 x 5 = 25
5 x 6 = 30
5 x 7 = 35
5 x 8 = 40
5 x 9 = 45
6 x 1 = 6
4 x 8 = 32
4 x 9 = 36
5 x 1 = 5
5 x 2 = 10
5 x 3 = 15
5 x 4 = 20
5 x 5 = 25
5 x 6 = 30
5 x 7 = 35
5 x 8 = 40
5 x 9 = 45
6 x 1 = 6
6 x 2 = 12
4 x 9 = 36
5 x 1 = 5
5 x 2 = 10
5 x 3 = 15
5 x 4 = 20
5 x 5 = 25
5 x 6 = 30
5 x 7 = 35
5 x 8 = 40
5 x 9 = 45
6 x 1 = 6
6 x 2 = 12
6 x 3 = 18
5 x 1 = 5
5 x 2 = 10
5 x 3 = 15
5 x 4 = 20
5 x 5 = 25
5 x 6 = 30
5 x 7 = 35
5 x 8 = 40
5 x 9 = 45
6 x 1 = 6
6 x 2 = 12
6 x 3 = 18
6 x 4 = 24
5 x 2 = 10
5 x 3 = 15
5 x 4 = 20
5 x 5 = 25
5 x 6 = 30
5 x 7 = 35
5 x 8 = 40
5 x 9 = 45
6 x 1 = 6
6 x 2 = 12
6 x 3 = 18
6 x 4 = 24
6 x 5 = 30
5 x 3 = 15
5 x 4 = 20
5 x 5 = 25
5 x 6 = 30
5 x 7 = 35
5 x 8 = 40
5 x 9 = 45
6 x 1 = 6
6 x 2 = 12
6 x 3 = 18
6 x 4 = 24
6 x 5 = 30
6 x 6 = 36
5 x 4 = 20
5 x 5 = 25
5 x 6 = 30
5 x 7 = 35
5 x 8 = 40
5 x 9 = 45
6 x 1 = 6
6 x 2 = 12
6 x 3 = 18
6 x 4 = 24
6 x 5 = 30
6 x 6 = 36
6 x 7 = 42
5 x 5 = 25
5 x 6 = 30
5 x 7 = 35
5 x 8 = 40
5 x 9 = 45
6 x 1 = 6
6 x 2 = 12
6 x 3 = 18
6 x 4 = 24
6 x 5 = 30
6 x 6 = 36
6 x 7 = 42
6 x 8 = 48
5 x 6 = 30
5 x 7 = 35
5 x 8 = 40
5 x 9 = 45
6 x 1 = 6
6 x 2 = 12
6 x 3 = 18
6 x 4 = 24
6 x 5 = 30
6 x 6 = 36
6 x 7 = 42
6 x 8 = 48
6 x 9 = 54
5 x 7 = 35
5 x 8 = 40
5 x 9 = 45
6 x 1 = 6
6 x 2 = 12
6 x 3 = 18
6 x 4 = 24
6 x 5 = 30
6 x 6 = 36
6 x 7 = 42
6 x 8 = 48
6 x 9 = 54
7 x 1 = 7
5 x 8 = 40
5 x 9 = 45
6 x 1 = 6
6 x 2 = 12
6 x 3 = 18
6 x 4 = 24
6 x 5 = 30
6 x 6 = 36
6 x 7 = 42
6 x 8 = 48
6 x 9 = 54
7 x 1 = 7
7 x 2 = 14
5 x 9 = 45
6 x 1 = 6
6 x 2 = 12
6 x 3 = 18
6 x 4 = 24
6 x 5 = 30
6 x 6 = 36
6 x 7 = 42
6 x 8 = 48
6 x 9 = 54
7 x 1 = 7
7 x 2 = 14
7 x 3 = 21
6 x 1 = 6
6 x 2 = 12
6 x 3 = 18
6 x 4 = 24
6 x 5 = 30
6 x 6 = 36
6 x 7 = 42
6 x 8 = 48
6 x 9 = 54
7 x 1 = 7
7 x 2 = 14
7 x 3 = 21
7 x 4 = 28
6 x 2 = 12
6 x 3 = 18
6 x 4 = 24
6 x 5 = 30
6 x 6 = 36
6 x 7 = 42
6 x 8 = 48
6 x 9 = 54
7 x 1 = 7
7 x 2 = 14
7 x 3 = 21
7 x 4 = 28
7 x 5 = 35
6 x 3 = 18
6 x 4 = 24
6 x 5 = 30
6 x 6 = 36
6 x 7 = 42
6 x 8 = 48
6 x 9 = 54
7 x 1 = 7
7 x 2 = 14
7 x 3 = 21
7 x 4 = 28
7 x 5 = 35
7 x 6 = 42
6 x 4 = 24
6 x 5 = 30
6 x 6 = 36
6 x 7 = 42
6 x 8 = 48
6 x 9 = 54
7 x 1 = 7
7 x 2 = 14
7 x 3 = 21
7 x 4 = 28
7 x 5 = 35
7 x 6 = 42
7 x 7 = 49
6 x 5 = 30
6 x 6 = 36
6 x 7 = 42
6 x 8 = 48
6 x 9 = 54
7 x 1 = 7
7 x 2 = 14
7 x 3 = 21
7 x 4 = 28
7 x 5 = 35
7 x 6 = 42
7 x 7 = 49
7 x 8 = 56
6 x 6 = 36
6 x 7 = 42
6 x 8 = 48
6 x 9 = 54
7 x 1 = 7
7 x 2 = 14
7 x 3 = 21
7 x 4 = 28
7 x 5 = 35
7 x 6 = 42
7 x 7 = 49
7 x 8 = 56
7 x 9 = 63
6 x 7 = 42
6 x 8 = 48
6 x 9 = 54
7 x 1 = 7
7 x 2 = 14
7 x 3 = 21
7 x 4 = 28
7 x 5 = 35
7 x 6 = 42
7 x 7 = 49
7 x 8 = 56
7 x 9 = 63
8 x 1 = 8
6 x 8 = 48
6 x 9 = 54
7 x 1 = 7
7 x 2 = 14
7 x 3 = 21
7 x 4 = 28
7 x 5 = 35
7 x 6 = 42
7 x 7 = 49
7 x 8 = 56
7 x 9 = 63
8 x 1 = 8
8 x 2 = 16
6 x 9 = 54
7 x 1 = 7
7 x 2 = 14
7 x 3 = 21
7 x 4 = 28
7 x 5 = 35
7 x 6 = 42
7 x 7 = 49
7 x 8 = 56
7 x 9 = 63
8 x 1 = 8
8 x 2 = 16
8 x 3 = 24
7 x 1 = 7
7 x 2 = 14
7 x 3 = 21
7 x 4 = 28
7 x 5 = 35
7 x 6 = 42
7 x 7 = 49
7 x 8 = 56
7 x 9 = 63
8 x 1 = 8
8 x 2 = 16
8 x 3 = 24
8 x 4 = 32
7 x 2 = 14
7 x 3 = 21
7 x 4 = 28
7 x 5 = 35
7 x 6 = 42
7 x 7 = 49
7 x 8 = 56
7 x 9 = 63
8 x 1 = 8
8 x 2 = 16
8 x 3 = 24
8 x 4 = 32
8 x 5 = 40
7 x 3 = 21
7 x 4 = 28
7 x 5 = 35
7 x 6 = 42
7 x 7 = 49
7 x 8 = 56
7 x 9 = 63
8 x 1 = 8
8 x 2 = 16
8 x 3 = 24
8 x 4 = 32
8 x 5 = 40
8 x 6 = 48
7 x 4 = 28
7 x 5 = 35
7 x 6 = 42
7 x 7 = 49
7 x 8 = 56
7 x 9 = 63
8 x 1 = 8
8 x 2 = 16
8 x 3 = 24
8 x 4 = 32
8 x 5 = 40
8 x 6 = 48
8 x 7 = 56
7 x 5 = 35
7 x 6 = 42
7 x 7 = 49
7 x 8 = 56
7 x 9 = 63
8 x 1 = 8
8 x 2 = 16
8 x 3 = 24
8 x 4 = 32
8 x 5 = 40
8 x 6 = 48
8 x 7 = 56
8 x 8 = 64
7 x 6 = 42
7 x 7 = 49
7 x 8 = 56
7 x 9 = 63
8 x 1 = 8
8 x 2 = 16
8 x 3 = 24
8 x 4 = 32
8 x 5 = 40
8 x 6 = 48
8 x 7 = 56
8 x 8 = 64
8 x 9 = 72
7 x 7 = 49
7 x 8 = 56
7 x 9 = 63
8 x 1 = 8
8 x 2 = 16
8 x 3 = 24
8 x 4 = 32
8 x 5 = 40
8 x 6 = 48
8 x 7 = 56
8 x 8 = 64
8 x 9 = 72
9 x 1 = 9
7 x 8 = 56
7 x 9 = 63
8 x 1 = 8
8 x 2 = 16
8 x 3 = 24
8 x 4 = 32
8 x 5 = 40
8 x 6 = 48
8 x 7 = 56
8 x 8 = 64
8 x 9 = 72
9 x 1 = 9
9 x 2 = 18
7 x 9 = 63
8 x 1 = 8
8 x 2 = 16
8 x 3 = 24
8 x 4 = 32
8 x 5 = 40
8 x 6 = 48
8 x 7 = 56
8 x 8 = 64
8 x 9 = 72
9 x 1 = 9
9 x 2 = 18
9 x 3 = 27
8 x 1 = 8
8 x 2 = 16
8 x 3 = 24
8 x 4 = 32
8 x 5 = 40
8 x 6 = 48
8 x 7 = 56
8 x 8 = 64
8 x 9 = 72
9 x 1 = 9
9 x 2 = 18
9 x 3 = 27
9 x 4 = 36
8 x 2 = 16
8 x 3 = 24
8 x 4 = 32
8 x 5 = 40
8 x 6 = 48
8 x 7 = 56
8 x 8 = 64
8 x 9 = 72
9 x 1 = 9
9 x 2 = 18
9 x 3 = 27
9 x 4 = 36
9 x 5 = 45
8 x 3 = 24
8 x 4 = 32
8 x 5 = 40
8 x 6 = 48
8 x 7 = 56
8 x 8 = 64
8 x 9 = 72
9 x 1 = 9
9 x 2 = 18
9 x 3 = 27
9 x 4 = 36
9 x 5 = 45
9 x 6 = 54
8 x 4 = 32
8 x 5 = 40
8 x 6 = 48
8 x 7 = 56
8 x 8 = 64
8 x 9 = 72
9 x 1 = 9
9 x 2 = 18
9 x 3 = 27
9 x 4 = 36
9 x 5 = 45
9 x 6 = 54
9 x 7 = 63
8 x 5 = 40
8 x 6 = 48
8 x 7 = 56
8 x 8 = 64
8 x 9 = 72
9 x 1 = 9
9 x 2 = 18
9 x 3 = 27
9 x 4 = 36
9 x 5 = 45
9 x 6 = 54
9 x 7 = 63
9 x 8 = 72
8 x 6 = 48
8 x 7 = 56
8 x 8 = 64
8 x 9 = 72
9 x 1 = 9
9 x 2 = 18
9 x 3 = 27
9 x 4 = 36
9 x 5 = 45
9 x 6 = 54
9 x 7 = 63
9 x 8 = 72
9 x 9 = 81
8 x 7 = 56
8 x 8 = 64
8 x 9 = 72
9 x 1 = 9
9 x 2 = 18
9 x 3 = 27
9 x 4 = 36
9 x 5 = 45
9 x 6 = 54
9 x 7 = 63
9 x 8 = 72
9 x 9 = 81
$

86. If you need a main function
as entry point,
if __name__ == “__main__”:
print “Hello World!”

87. If you need a main function
as entry point,
if __name__ == “__main__”:
print “Hello World!”

88. If you need a main function
as entry point,
if __name__ == “__main__”:
print “Hello World!”
and write all statements after it.

89. def mul(x, y):
ret = x * y
return ret
for i in range(10)[2:]:
for j in range(10)[1:]:
print "{0} x {1} = {2}".format(i, j,
mul(i, j))
variable
can be used without declaration

90. def mul(x, y):
ret = x * y
return ret
for i in range(10)[2:]:
for j in range(10)[1:]:
print "{0} x {1} = {2}".format(i, j,
mul(i, j))
variable
def mul(x, y):
ret = x * y
return ret
for i in range(10)[2:]:
for j in range(10)[1:]:
print "{0} x {1} = {2}".format(i, j,
mul(i, j))
can be used without declaration

91. def mul(x, y):
ret = x * y
return ret
for i in range(10)[2:]:
for j in range(10)[1:]:
print "{0} x {1} = {2}".format(i, j,
mul(i, j))
scope
use whitespace to identify scope

92. def mul(x, y):
ret = x * y
return ret
for i in range(10)[2:]:
for j in range(10)[1:]:
print "{0} x {1} = {2}".format(i, j,
mul(i, j))
scope
def mul(x, y):
ret = x * y
return ret
for i in range(10)[2:]:
for j in range(10)[1:]:
print "{0} x {1} = {2}".format(i, j,
mul(i, j))
use whitespace to identify scope

93. You can use
to identify scopes.

94. You can use
one space
two spaces
three spaces
four spaces
lots of spaces
to identify scopes.

95. You can use
one space
two spaces
three spaces
four spaces
lots of spaces
one tab
two tabs
three tabs
four tabs
lots of tabs
to identify scopes.

96. But, you should unify the style!

97. Built-in DataType

98. Numbers
int
(integer)
long
(long integer)
float
(real number)
complex
(complex number)
10 10L 100.0 3 + 2j
-789 -789L -21.9 3 - 2j
-0x111 0xFFFFFFFFF 3.20E+10 45j
0x69 -0x12321L -2.00E-08 3e+26j

99. Initialization / Conversion
data type initial
int int(x)
long long(x)
float float(x)
complex
complex(x)
complex(x, y)
>>>

100. Initialization / Conversion
data type initial
int int(x)
long long(x)
float float(x)
complex
complex(x)
complex(x, y)
>>>>>> int(10)

101. Initialization / Conversion
data type initial
int int(x)
long long(x)
float float(x)
complex
complex(x)
complex(x, y)
>>>>>> int(10)>>> int(10)
10
>>>

102. Initialization / Conversion
data type initial
int int(x)
long long(x)
float float(x)
complex
complex(x)
complex(x, y)
>>>>>> int(10)>>> int(10)
10
>>>
>>> int(10)
10
>>> int(“100”)

103. Initialization / Conversion
data type initial
int int(x)
long long(x)
float float(x)
complex
complex(x)
complex(x, y)
>>>>>> int(10)>>> int(10)
10
>>>
>>> int(10)
10
>>> int(“100”)
>>> int(10)
10
>>> int(“100”)
100
>>>

104. Initialization / Conversion
data type initial
int int(x)
long long(x)
float float(x)
complex
complex(x)
complex(x, y)
>>>>>> int(10)>>> int(10)
10
>>>
>>> int(10)
10
>>> int(“100”)
>>> int(10)
10
>>> int(“100”)
100
>>>
>>> int(10)
10
>>> int(“100”)
100
>>> complex(10)

105. Initialization / Conversion
data type initial
int int(x)
long long(x)
float float(x)
complex
complex(x)
complex(x, y)
>>>>>> int(10)>>> int(10)
10
>>>
>>> int(10)
10
>>> int(“100”)
>>> int(10)
10
>>> int(“100”)
100
>>>
>>> int(10)
10
>>> int(“100”)
100
>>> complex(10)
>>> int(10)
10
>>> int(“100”)
100
>>> complex(10)
(10+0j)
>>>

106. Initialization / Conversion
data type initial
int int(x)
long long(x)
float float(x)
complex
complex(x)
complex(x, y)
>>>>>> int(10)>>> int(10)
10
>>>
>>> int(10)
10
>>> int(“100”)
>>> int(10)
10
>>> int(“100”)
100
>>>
>>> int(10)
10
>>> int(“100”)
100
>>> complex(10)
>>> int(10)
10
>>> int(“100”)
100
>>> complex(10)
(10+0j)
>>>
>>> int(10)
10
>>> int(“100”)
100
>>> complex(10)
(10+0j)
>>> complex(10, 3)

107. Initialization / Conversion
data type initial
int int(x)
long long(x)
float float(x)
complex
complex(x)
complex(x, y)
>>>>>> int(10)>>> int(10)
10
>>>
>>> int(10)
10
>>> int(“100”)
>>> int(10)
10
>>> int(“100”)
100
>>>
>>> int(10)
10
>>> int(“100”)
100
>>> complex(10)
>>> int(10)
10
>>> int(“100”)
100
>>> complex(10)
(10+0j)
>>>
>>> int(10)
10
>>> int(“100”)
100
>>> complex(10)
(10+0j)
>>> complex(10, 3)
10
>>> int(“100”)
100
>>> complex(10)
(10+0j)
>>> complex(10, 3)
(10+3j)
>>>

108. Initialization / Conversion
data type initial
int int(x)
long long(x)
float float(x)
complex
complex(x)
complex(x, y)
>>>>>> int(10)>>> int(10)
10
>>>
>>> int(10)
10
>>> int(“100”)
>>> int(10)
10
>>> int(“100”)
100
>>>
>>> int(10)
10
>>> int(“100”)
100
>>> complex(10)
>>> int(10)
10
>>> int(“100”)
100
>>> complex(10)
(10+0j)
>>>
>>> int(10)
10
>>> int(“100”)
100
>>> complex(10)
(10+0j)
>>> complex(10, 3)
10
>>> int(“100”)
100
>>> complex(10)
(10+0j)
>>> complex(10, 3)
(10+3j)
>>>
10
>>> int(“100”)
100
>>> complex(10)
(10+0j)
>>> complex(10, 3)
(10+3j)
>>> complex(“20+5j”)

109. Initialization / Conversion
data type initial
int int(x)
long long(x)
float float(x)
complex
complex(x)
complex(x, y)
>>>>>> int(10)>>> int(10)
10
>>>
>>> int(10)
10
>>> int(“100”)
>>> int(10)
10
>>> int(“100”)
100
>>>
>>> int(10)
10
>>> int(“100”)
100
>>> complex(10)
>>> int(10)
10
>>> int(“100”)
100
>>> complex(10)
(10+0j)
>>>
>>> int(10)
10
>>> int(“100”)
100
>>> complex(10)
(10+0j)
>>> complex(10, 3)
10
>>> int(“100”)
100
>>> complex(10)
(10+0j)
>>> complex(10, 3)
(10+3j)
>>>
10
>>> int(“100”)
100
>>> complex(10)
(10+0j)
>>> complex(10, 3)
(10+3j)
>>> complex(“20+5j”)
100
>>> complex(10)
(10+0j)
>>> complex(10, 3)
(10+3j)
>>> complex(“20+5j”)
(20+5j)
>>>

110. Arithmetic Operators
+ addition
- subtraction
* multiplication
/ division
% modular
** exponential
// floor division
>>>

111. Arithmetic Operators
+ addition
- subtraction
* multiplication
/ division
% modular
** exponential
// floor division
>>>>>> 2**10

112. Arithmetic Operators
+ addition
- subtraction
* multiplication
/ division
% modular
** exponential
// floor division
>>>>>> 2**10>>> 2**10
1024
>>>

113. Arithmetic Operators
+ addition
- subtraction
* multiplication
/ division
% modular
** exponential
// floor division
>>>>>> 2**10>>> 2**10
1024
>>>
>>> 2**10
1024
>>> 5.8 // 2

114. Arithmetic Operators
+ addition
- subtraction
* multiplication
/ division
% modular
** exponential
// floor division
>>>>>> 2**10>>> 2**10
1024
>>>
>>> 2**10
1024
>>> 5.8 // 2
>>> 2**10
1024
>>> 5.8 // 2
2.0
>>>

115. Bitwise Operators
& and
| or
^ exclusion or
>> shift right
<< shift left
~ not
>>>

116. Bitwise Operators
& and
| or
^ exclusion or
>> shift right
<< shift left
~ not
>>>>>> 3 & 1

117. Bitwise Operators
& and
| or
^ exclusion or
>> shift right
<< shift left
~ not
>>>>>> 3 & 1>>> 3 & 1
1
>>>

118. Bitwise Operators
& and
| or
^ exclusion or
>> shift right
<< shift left
~ not
>>>>>> 3 & 1>>> 3 & 1
1
>>>
>>> 3 & 1
1
>>> 1 << 10

119. Bitwise Operators
& and
| or
^ exclusion or
>> shift right
<< shift left
~ not
>>>>>> 3 & 1>>> 3 & 1
1
>>>
>>> 3 & 1
1
>>> 1 << 10
>>> 3 & 1
1
>>> 1 << 10
1024
>>>

120. Bitwise Operators
& and
| or
^ exclusion or
>> shift right
<< shift left
~ not
>>>>>> 3 & 1>>> 3 & 1
1
>>>
>>> 3 & 1
1
>>> 1 << 10
>>> 3 & 1
1
>>> 1 << 10
1024
>>>
>>> 3 & 1
1
>>> 1 << 10
1024
>>> ~0

121. Bitwise Operators
& and
| or
^ exclusion or
>> shift right
<< shift left
~ not
>>>>>> 3 & 1>>> 3 & 1
1
>>>
>>> 3 & 1
1
>>> 1 << 10
>>> 3 & 1
1
>>> 1 << 10
1024
>>>
>>> 3 & 1
1
>>> 1 << 10
1024
>>> ~0
>>> 3 & 1
1
>>> 1 << 10
1024
>>> ~0
-1
>>>

122. Comparison Operators
> greater than
>= greater than or equal to
< less than
<= less than or equal to
== equal to
!= not equal to

123. List
Contents are
surrounded by
square brackets
and separate by
comma.
>>>

124. List
Contents are
surrounded by
square brackets
and separate by
comma.
>>>>>> [“aaa”, “bbb”, 1, 2]

125. List
Contents are
surrounded by
square brackets
and separate by
comma.
>>>>>> [“aaa”, “bbb”, 1, 2]>>> [“aaa”, “bbb”, 1, 2]
[‘aaa’, ‘bbb’, 1, 2]
>>>

126. Initialization / Conversion
>>>

127. Initialization / Conversion
>>>>>> list([1, 2, 3])

128. Initialization / Conversion
>>>>>> list([1, 2, 3])>>> list([1, 2, 3])
[1, 2, 3]
>>>

129. Initialization / Conversion
>>>>>> list([1, 2, 3])>>> list([1, 2, 3])
[1, 2, 3]
>>>
>>> list([1, 2, 3])
[1, 2, 3]
>>> list(“abc”)

130. Initialization / Conversion
>>>>>> list([1, 2, 3])>>> list([1, 2, 3])
[1, 2, 3]
>>>
>>> list([1, 2, 3])
[1, 2, 3]
>>> list(“abc”)
>>> list([1, 2, 3])
[1, 2, 3]
>>> list(“abc”)
[‘a’, ‘b’, ‘c’]
>>>

131. Operators
+ append
* repeat
>>>

132. Operators
+ append
* repeat
>>>>>> x = [1, 2, 3]

133. Operators
+ append
* repeat
>>>>>> x = [1, 2, 3]>>> x = [1, 2, 3]
>>>

134. Operators
+ append
* repeat
>>>>>> x = [1, 2, 3]>>> x = [1, 2, 3]
>>>
>>> x = [1, 2, 3]
>>> y = [‘a’, ‘b’]

135. Operators
+ append
* repeat
>>>>>> x = [1, 2, 3]>>> x = [1, 2, 3]
>>>
>>> x = [1, 2, 3]
>>> y = [‘a’, ‘b’]
>>> x = [1, 2, 3]
>>> y = [‘a’, ‘b’]
>>>

136. Operators
+ append
* repeat
>>>>>> x = [1, 2, 3]>>> x = [1, 2, 3]
>>>
>>> x = [1, 2, 3]
>>> y = [‘a’, ‘b’]
>>> x = [1, 2, 3]
>>> y = [‘a’, ‘b’]
>>>
>>> x = [1, 2, 3]
>>> y = [‘a’, ‘b’]
>>> x * 2

137. Operators
+ append
* repeat
>>>>>> x = [1, 2, 3]>>> x = [1, 2, 3]
>>>
>>> x = [1, 2, 3]
>>> y = [‘a’, ‘b’]
>>> x = [1, 2, 3]
>>> y = [‘a’, ‘b’]
>>>
>>> x = [1, 2, 3]
>>> y = [‘a’, ‘b’]
>>> x * 2
>>> x = [1, 2, 3]
>>> y = [‘a’, ‘b’]
>>> x * 2
[1, 2, 3, 1, 2, 3]
>>>

138. Operators
+ append
* repeat
>>>>>> x = [1, 2, 3]>>> x = [1, 2, 3]
>>>
>>> x = [1, 2, 3]
>>> y = [‘a’, ‘b’]
>>> x = [1, 2, 3]
>>> y = [‘a’, ‘b’]
>>>
>>> x = [1, 2, 3]
>>> y = [‘a’, ‘b’]
>>> x * 2
>>> x = [1, 2, 3]
>>> y = [‘a’, ‘b’]
>>> x * 2
[1, 2, 3, 1, 2, 3]
>>>
>>> x = [1, 2, 3]
>>> y = [‘a’, ‘b’]
>>> x * 2
[1, 2, 3, 1, 2, 3]
>>> x + y

139. Operators
+ append
* repeat
>>>>>> x = [1, 2, 3]>>> x = [1, 2, 3]
>>>
>>> x = [1, 2, 3]
>>> y = [‘a’, ‘b’]
>>> x = [1, 2, 3]
>>> y = [‘a’, ‘b’]
>>>
>>> x = [1, 2, 3]
>>> y = [‘a’, ‘b’]
>>> x * 2
>>> x = [1, 2, 3]
>>> y = [‘a’, ‘b’]
>>> x * 2
[1, 2, 3, 1, 2, 3]
>>>
>>> x = [1, 2, 3]
>>> y = [‘a’, ‘b’]
>>> x * 2
[1, 2, 3, 1, 2, 3]
>>> x + y
>>> x = [1, 2, 3]
>>> y = [‘a’, ‘b’]
>>> x * 2
[1, 2, 3, 1, 2, 3]
>>> x + y
[1, 2, 3, ‘a’, ‘b’]
>>>

140. >>>
Access Element

141. >>>>>> x = [1, 2, 3, 4, 5]
Access Element

142. >>>>>> x = [1, 2, 3, 4, 5]>>> x = [1, 2, 3, 4, 5]
>>>
Access Element

143. >>>>>> x = [1, 2, 3, 4, 5]>>> x = [1, 2, 3, 4, 5]
>>>
>>> x = [1, 2, 3, 4, 5]
>>> x[1]
Access Element

144. >>>>>> x = [1, 2, 3, 4, 5]>>> x = [1, 2, 3, 4, 5]
>>>
>>> x = [1, 2, 3, 4, 5]
>>> x[1]
>>> x = [1, 2, 3, 4, 5]
>>> x[1]
2
>>>
Access Element

145. >>>>>> x = [1, 2, 3, 4, 5]>>> x = [1, 2, 3, 4, 5]
>>>
>>> x = [1, 2, 3, 4, 5]
>>> x[1]
>>> x = [1, 2, 3, 4, 5]
>>> x[1]
2
>>>
>>> x = [1, 2, 3, 4, 5]
>>> x[1]
2
>>> x[1] = ‘0’
Access Element

146. >>>>>> x = [1, 2, 3, 4, 5]>>> x = [1, 2, 3, 4, 5]
>>>
>>> x = [1, 2, 3, 4, 5]
>>> x[1]
>>> x = [1, 2, 3, 4, 5]
>>> x[1]
2
>>>
>>> x = [1, 2, 3, 4, 5]
>>> x[1]
2
>>> x[1] = ‘0’
>>> x = [1, 2, 3, 4, 5]
>>> x[1]
2
>>> x[1] = ‘0’
>>>
Access Element

147. >>>>>> x = [1, 2, 3, 4, 5]>>> x = [1, 2, 3, 4, 5]
>>>
>>> x = [1, 2, 3, 4, 5]
>>> x[1]
>>> x = [1, 2, 3, 4, 5]
>>> x[1]
2
>>>
>>> x = [1, 2, 3, 4, 5]
>>> x[1]
2
>>> x[1] = ‘0’
>>> x = [1, 2, 3, 4, 5]
>>> x[1]
2
>>> x[1] = ‘0’
>>>
>>> x = [1, 2, 3, 4, 5]
>>> x[1]
2
>>> x[1] = ‘0’
>>> x
Access Element

148. >>>>>> x = [1, 2, 3, 4, 5]>>> x = [1, 2, 3, 4, 5]
>>>
>>> x = [1, 2, 3, 4, 5]
>>> x[1]
>>> x = [1, 2, 3, 4, 5]
>>> x[1]
2
>>>
>>> x = [1, 2, 3, 4, 5]
>>> x[1]
2
>>> x[1] = ‘0’
>>> x = [1, 2, 3, 4, 5]
>>> x[1]
2
>>> x[1] = ‘0’
>>>
>>> x = [1, 2, 3, 4, 5]
>>> x[1]
2
>>> x[1] = ‘0’
>>> x
>>> x = [1, 2, 3, 4, 5]
>>> x[1]
2
>>> x[1] = ‘0’
>>> x
[1, ‘0’, 3, 4, 5]
>>>
Access Element

149. >>>
Slice
[start:end(:step)]

150. >>>
Slice
[start:end(:step)]
[0:length(:1)]
default value

151. >>>>>> x = [1, 2, 3, 4, 5]
Slice
[start:end(:step)]
[0:length(:1)]
default value

152. >>>>>> x = [1, 2, 3, 4, 5]>>> x = [1, 2, 3, 4, 5]
>>>
Slice
[start:end(:step)]
[0:length(:1)]
default value

153. >>>>>> x = [1, 2, 3, 4, 5]>>> x = [1, 2, 3, 4, 5]
>>>
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
Slice
[start:end(:step)]
[0:length(:1)]
default value

154. >>>>>> x = [1, 2, 3, 4, 5]>>> x = [1, 2, 3, 4, 5]
>>>
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
[1, 2, 3, 4, 5]
>>>
Slice
[start:end(:step)]
[0:length(:1)]
default value

155. >>>>>> x = [1, 2, 3, 4, 5]>>> x = [1, 2, 3, 4, 5]
>>>
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
[1, 2, 3, 4, 5]
>>>
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
[1, 2, 3, 4, 5]
>>> x[:]
Slice
[start:end(:step)]
[0:length(:1)]
default value

156. >>>>>> x = [1, 2, 3, 4, 5]>>> x = [1, 2, 3, 4, 5]
>>>
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
[1, 2, 3, 4, 5]
>>>
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
[1, 2, 3, 4, 5]
>>> x[:]
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
[1, 2, 3, 4, 5]
>>> x[:]
[1, 2, 3, 4, 5]
>>>
Slice
[start:end(:step)]
[0:length(:1)]
default value

157. >>>>>> x = [1, 2, 3, 4, 5]>>> x = [1, 2, 3, 4, 5]
>>>
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
[1, 2, 3, 4, 5]
>>>
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
[1, 2, 3, 4, 5]
>>> x[:]
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
[1, 2, 3, 4, 5]
>>> x[:]
[1, 2, 3, 4, 5]
>>>
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
[1, 2, 3, 4, 5]
>>> x[:]
[1, 2, 3, 4, 5]
>>> x[1:3]
Slice
[start:end(:step)]
[0:length(:1)]
default value

158. >>>>>> x = [1, 2, 3, 4, 5]>>> x = [1, 2, 3, 4, 5]
>>>
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
[1, 2, 3, 4, 5]
>>>
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
[1, 2, 3, 4, 5]
>>> x[:]
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
[1, 2, 3, 4, 5]
>>> x[:]
[1, 2, 3, 4, 5]
>>>
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
[1, 2, 3, 4, 5]
>>> x[:]
[1, 2, 3, 4, 5]
>>> x[1:3]
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
[1, 2, 3, 4, 5]
>>> x[:]
[1, 2, 3, 4, 5]
>>> x[1:3]
[2, 3]
>>>
Slice
[start:end(:step)]
[0:length(:1)]
default value

159. >>>>>> x = [1, 2, 3, 4, 5]>>> x = [1, 2, 3, 4, 5]
>>>
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
[1, 2, 3, 4, 5]
>>>
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
[1, 2, 3, 4, 5]
>>> x[:]
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
[1, 2, 3, 4, 5]
>>> x[:]
[1, 2, 3, 4, 5]
>>>
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
[1, 2, 3, 4, 5]
>>> x[:]
[1, 2, 3, 4, 5]
>>> x[1:3]
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
[1, 2, 3, 4, 5]
>>> x[:]
[1, 2, 3, 4, 5]
>>> x[1:3]
[2, 3]
>>>
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
[1, 2, 3, 4, 5]
>>> x[:]
[1, 2, 3, 4, 5]
>>> x[1:3]
[2, 3]
>>> x[1:-1]
Slice
[start:end(:step)]
[0:length(:1)]
default value

160. >>>>>> x = [1, 2, 3, 4, 5]>>> x = [1, 2, 3, 4, 5]
>>>
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
[1, 2, 3, 4, 5]
>>>
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
[1, 2, 3, 4, 5]
>>> x[:]
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
[1, 2, 3, 4, 5]
>>> x[:]
[1, 2, 3, 4, 5]
>>>
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
[1, 2, 3, 4, 5]
>>> x[:]
[1, 2, 3, 4, 5]
>>> x[1:3]
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
[1, 2, 3, 4, 5]
>>> x[:]
[1, 2, 3, 4, 5]
>>> x[1:3]
[2, 3]
>>>
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
[1, 2, 3, 4, 5]
>>> x[:]
[1, 2, 3, 4, 5]
>>> x[1:3]
[2, 3]
>>> x[1:-1]
[1, 2, 3, 4, 5]
>>> x[:]
[1, 2, 3, 4, 5]
>>> x[1:3]
[2, 3]
>>> x[1:-1]
[2, 3, 4]
>>>
Slice
[start:end(:step)]
[0:length(:1)]
default value

161. >>>>>> x = [1, 2, 3, 4, 5]>>> x = [1, 2, 3, 4, 5]
>>>
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
[1, 2, 3, 4, 5]
>>>
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
[1, 2, 3, 4, 5]
>>> x[:]
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
[1, 2, 3, 4, 5]
>>> x[:]
[1, 2, 3, 4, 5]
>>>
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
[1, 2, 3, 4, 5]
>>> x[:]
[1, 2, 3, 4, 5]
>>> x[1:3]
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
[1, 2, 3, 4, 5]
>>> x[:]
[1, 2, 3, 4, 5]
>>> x[1:3]
[2, 3]
>>>
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
[1, 2, 3, 4, 5]
>>> x[:]
[1, 2, 3, 4, 5]
>>> x[1:3]
[2, 3]
>>> x[1:-1]
[1, 2, 3, 4, 5]
>>> x[:]
[1, 2, 3, 4, 5]
>>> x[1:3]
[2, 3]
>>> x[1:-1]
[2, 3, 4]
>>>
[1, 2, 3, 4, 5]
>>> x[:]
[1, 2, 3, 4, 5]
>>> x[1:3]
[2, 3]
>>> x[1:-1]
[2, 3, 4]
>>> x[::2]
Slice
[start:end(:step)]
[0:length(:1)]
default value

162. >>>>>> x = [1, 2, 3, 4, 5]>>> x = [1, 2, 3, 4, 5]
>>>
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
[1, 2, 3, 4, 5]
>>>
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
[1, 2, 3, 4, 5]
>>> x[:]
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
[1, 2, 3, 4, 5]
>>> x[:]
[1, 2, 3, 4, 5]
>>>
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
[1, 2, 3, 4, 5]
>>> x[:]
[1, 2, 3, 4, 5]
>>> x[1:3]
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
[1, 2, 3, 4, 5]
>>> x[:]
[1, 2, 3, 4, 5]
>>> x[1:3]
[2, 3]
>>>
>>> x = [1, 2, 3, 4, 5]
>>> x[::]
[1, 2, 3, 4, 5]
>>> x[:]
[1, 2, 3, 4, 5]
>>> x[1:3]
[2, 3]
>>> x[1:-1]
[1, 2, 3, 4, 5]
>>> x[:]
[1, 2, 3, 4, 5]
>>> x[1:3]
[2, 3]
>>> x[1:-1]
[2, 3, 4]
>>>
[1, 2, 3, 4, 5]
>>> x[:]
[1, 2, 3, 4, 5]
>>> x[1:3]
[2, 3]
>>> x[1:-1]
[2, 3, 4]
>>> x[::2]
[1, 2, 3, 4, 5]
>>> x[1:3]
[2, 3]
>>> x[1:-1]
[2, 3, 4]
>>> x[::2]
[1, 3, 5]
>>>
Slice
[start:end(:step)]
[0:length(:1)]
default value