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compileall2 Python module

Copy of compileall module from CPython source code with some new features, namely:

  • compatibility with Python >= 3.6 & PyPy 3

The following features were first implemented in this project and then included into the standard libraty of CPython.

  • default recursion limit is now "unlimited" (actually limited by sys.getrecursionlimit())

  • -s and -p command line options for manipulation of the path baked into a compiled *.pyc file.

  • the -o command line option can be specified multiple times to compile for multiple optimization levels in one run

  • the -e command line option for ignoring symlinks pointing outside a specific directory

  • the --hardlink-dupes command line option which creates hardlinks between .pyc files with the same content

Installation

  • From PyPI via pip install compileall2

  • In Fedora Linux, compileall2.py is a part of python-srpm-macros RPM package.

Usage

compileall2 can be executed as a Python module or directly.

Example usage:

# Create some script (this one raises an exception to show tracebacks)
$ echo "1 / 0" > test.py

# Compile it
$ compileall2 test.py
Compiling 'test.py'...

# Try to execute compiled version directly
$ python __pycache__/test.cpython-37.pyc 
Traceback (most recent call last):
  File "test.py", line 1, in <module>
    1 / 0
ZeroDivisionError: division by zero

# Recompile it with changes path which will be visible in error message
$ compileall2 -f -p /foo/bar test.py
Compiling 'test.py'...
$ python __pycache__/test.cpython-37.pyc
Traceback (most recent call last):
  File "/foo/bar/test.py", line 1, in <module>
ZeroDivisionError: division by zero

# Same thing as above but executed as a Python module
$ python -m compileall2 -f -p /bar/baz test.py
Compiling 'test.py'...
$ python __pycache__/test.cpython-37.pyc
Traceback (most recent call last):
  File "/bar/baz/test.py", line 1, in <module>
ZeroDivisionError: division by zero

Testing

You can test it locally with tox or unittest directly:

$ python3 -m unittest test_compileall2.py
..............sss....ss.......................sss....ss.....................ss.............................----------------------------------------------------------------------
Ran 107 tests in 3.714s

OK (skipped=12)

but running in a container might be better because the superuser has privileges to write to sys.path which lowers the number of skipped tests.

License

PSF license v2