PyPy 1.5

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rocketcircus

Updates on PyPy 1.5, tour of CPython and RPython main loop

Technology

Alternative Implementations

• CPython

• Psyco

• Unladen Swallow

• PyPy

psyco

• import psyco

• Just in Time (JIT) Compilation

• JIT Specialization

• 32bit only

• maintenance only - latest version 1.6 is 3 years old

Unladen Swallow

• started as Google Project, but ppl. pulled mid 2010

• JIT: LLVM back-end for CPython

• Plus lots of little tweaks - got pushed upstream from 2.6.1 onwards

• PEP 3146 (accepted): merge into CPython

• Targeting 3.3, but stale for 10 months - no interest on python-dev

PyPy

• Python in Python

• JIT

• RPython (details later in the interactive session)

PyPy 1.5

• Improved C Module Support

• JIT for 86 and 86_64!

• CPython 2.6 and 2.7 compatible

• Gaining momentum: Compatibility list online, Numpy in development

__future__

PyPy 1.6

CPython 2.6 CPython 2.7

CPython 3.3

Code Tour

• python dis module

• CPython Main Loop

• BINARY_ADD

• Manual tracing

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PyPy 1.5

1. PyPy 1.5 jss 2011-05-05

2. Alternative Implementations • CPython • Psyco • Unladen Swallow • PyPy

3. psyco • import psyco • Just in Time (JIT) Compilation • JIT Specialization • 32bit only • maintenance only - latest version 1.6 is 3 years old

4. Unladen Swallow • started as Google Project, but ppl. pulled mid 2010 • JIT: LLVM back-end for CPython • Plus lots of little tweaks - got pushed upstream from 2.6.1 onwards • PEP 3146 (accepted): merge into CPython • Targeting 3.3, but stale for 10 months - no interest on python-dev

5. PyPy • Python in Python • JIT • RPython (details later in the interactive session)

6. PyPy 1.5 • Improved C Module Support • JIT for 86 and 86_64! • CPython 2.6 and 2.7 compatible • Gaining momentum: Compatibility list online, Numpy in development

7. __future__ PyPy 1.6 CPython 2.6 CPython 2.7 CPython 3.3

8. Code Tour • python dis module • CPython Main Loop • BINARY_ADD • Manual tracing

PyPy 1.5

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