Slide talked at PyCon JP 2017

1. Pythonista
iOS
@jbking
PyCon JP 2017

2. Who?
@jbking
Yarch( )
ex-OpenStacker
IoT Platform

3. Pythonista
?

5. Pythonista
• Pythonista: A full-featured Python environment for iOS devices
• europython 2014 https://ep2014.europython.eu/en/
schedule/sessions/109/
• Pythonista Pythonista
iOS Pythonista
• https://pycon.jp/2016/ja/schedule/presentation/47/ PyCon
JP 2016
• Pythonista
• PyCon mini Kumamoto

6. (1)
•
•
• Pythonista iOS
• iOS Pythonista
•
• NumPy SymPy, SimPy, Matplotlib
• StaSh
• , Git

7. (2)
•
• iOS Python
•
• Python
• Objective-C
• iOS

8. Pythonista
iOS
•
• Xcode
•
• AppStore ?
•
• Xcode https://github.com/omz/
PythonistaAppTemplate
• Python

9. Pythonista iOS
• Pythonista Python
• iOS Framework Python
•
•

10. Python
Yes
No
Pythonista
No
Yes
C
iOS objc_util
No
Yes
Yes
No

11. • Pythonista
•
• (BLE)
• iOS
• ( , C/S)
• GPIO
•

12. • Python
• NG
• iOS Pythonista
• objc_util
• ( Framework … )
•
•

13. objc_util ???

14. objc_util
• Pythonista
• Objective-C
•
• iOS
• objc_msgSend

15. Framework
from objc_util import *
NSBundle.bundleWithPath_('/System/Library/
Frameworks/Photos.framework').load()
AVFoundation.framework AVKit.framework Accelerate.framework Accounts.framework AdSupport.framework
AddressBook.framework AddressBookUI.framework AssetsLibrary.framework AudioToolbox.framework
AudioUnit.framework CFNetwork.framework CallKit.framework CloudKit.framework Contacts.framework
ContactsUI.framework CoreAudio.framework CoreAudioKit.framework CoreBluetooth.framework CoreData.framework
CoreFoundation.framework CoreGraphics.framework CoreImage.framework CoreLocation.framework
CoreMIDI.framework CoreMedia.framework CoreMotion.framework CoreSpotlight.framework CoreTelephony.framework
CoreText.framework CoreVideo.framework EventKit.framework EventKitUI.framework ExternalAccessory.framework
Foundation.framework GLKit.framework GSS.framework GameController.framework GameKit.framework
GameplayKit.framework HealthKit.framework HealthKitUI.framework HomeKit.framework IOKit.framework
ImageIO.framework Intents.framework IntentsUI.framework JavaScriptCore.framework LocalAuthentication.framework
MapKit.framework MediaAccessibility.framework MediaPlayer.framework MediaToolbox.framework
MessageUI.framework Messages.framework Metal.framework MetalKit.framework
MetalPerformanceShaders.framework MobileCoreServices.framework ModelIO.framework
MultipeerConnectivity.framework NetworkExtension.framework NewsstandKit.framework NotificationCenter.framework
OpenAL.framework OpenGLES.framework PassKit.framework Photos.framework PhotosUI.framework
PushKit.framework QuartzCore.framework QuickLook.framework ReplayKit.framework SafariServices.framework
SceneKit.framework Security.framework Social.framework Speech.framework SpriteKit.framework StoreKit.framework
System.framework SystemConfiguration.framework Twitter.framework UIKit.framework UserNotifications.framework
UserNotificationsUI.framework VideoSubscriberAccount.framework VideoToolbox.framework
WatchConnectivity.framework WebKit.framework iAd.framework

16. from objc_util import *
UIScreen = ObjCClass('UIScreen')
screen = UIScreen.mainScreen()
if screen.brightness() < 0.3:
screen.setBrightness_(0.6)
else:
screen.setBrightness_(0.1)

17. from objc_util import *
def DemoClass_foo_(_self, _cmd, _s):
print('result: %s' % ObjCInstance(_s))
# NSObject
DemoClass = create_objc_class(
'DemoClass',
ObjCClass('NSObject'),
methods=[DemoClass_foo_],
protocols=[])
demo_obj = DemoClass.alloc().init()
demo_obj.foo_("hello")
result: hello

18. def DemoClass_foo_(_self, _cmd, _s): ...
def bar_baz_(_self, _cmd, _x1, _x2): ...
DemoClass = create_objc_class(
...
methods=[DemoClass_foo_, bar_baz_],
...
demo_obj = DemoClass.alloc().init()
demo_obj.foo_("hello")
demo_obj.bar_baz_(2, 3)
demo_obj.bar_(2, baz=5)
# UIColor.colorWithRed:green:blue:alpha
UIColor.colorWithRed(1.0, green=0.0,
blue=0.0, alpha=1.0)
UIColor.color(red=1.0, green=0.0, blue=0.0,
alpha=1.0)

19. from objc_util import ObjCClass
def is_word_valid(word):
reflib =
ObjCClass('UIReferenceLibraryViewController')
return reflib.dictionaryHasDefinitionForTerm_(word)
test_words = ['foo', 'bar', 'quuz', 'cat', 'dog']
for word in test_words:
print('%s: %s' % (word, is_word_valid(word)))
foo: False
bar: True
quuz: False
cat: True
dog: True
https://gist.github.com/omz/599ef8aeae22620261c6

20. from objc_util import *
UIApplication = ObjCClass('UIApplication')
vc =
UIApplication.sharedApplication().keyWindow
().rootViewController()
print(vc.childViewControllers())
<b'__NSArrayI': (
"<UINavigationController: 0x1038db200>",
"<PA2TabViewController: 0x104003000>",
"<PA2AccessoryTabViewController: 0x1038dac00>"
)>
Pythonista

23. • objc_util
• iOS Framework
• ObjCClass ObjCInstance
Python
•
•
•

25. IoT
• cb
• BLE
• CoreBluetooth
• Sony MESH
https://youtu.be/uJ6VVklLUQc
https://github.com/jbking/pythonista-misc/blob/master/mesh/button_demo.py

26. • objc_util
• SpriteKit
(SKPhysicsBody)
https://youtu.be/rS6FHvKrU6Y
https://github.com/jbking/pythonista-misc/blob/master/spritekit/skview-demo.py

27. •
• ui, Requests
•
• appex, webbrowser,
(pythonista://ScriptName)

28. tips
•
• view.present(hide_title_bar=True)
•
• CPU
• GPU
•

29. • Omz gist
• https://gist.github.com/omz/
• Pythonista Tools
• https://github.com/Pythonista-Tools/Pythonista-
Tools

30. Questions?