python version dump snippet

python-version-dump.py

"""
Snippet to list Python installation/packaging related version information.

Execute it with the Python executable you want to inspect.

Usage example with curl/wget tricks straight from this github gist
(optionally replace `python` at the end with the desired alternative):

    curl -s https://gist.githubusercontent.com/soxofaan/cc4986cc507cb10f962d/raw/python-version-dump.py | python

    wget -O - -q https://gist.githubusercontent.com/soxofaan/cc4986cc507cb10f962d/raw/python-version-dump.py | python

If your shell supports it (e.g. bash) you can also put `python` in front, like this:

    python < <(curl -s https://gist.githubusercontent.com/soxofaan/cc4986cc507cb10f962d/raw/python-version-dump.py)

    python < <(wget -O - -q https://gist.githubusercontent.com/soxofaan/cc4986cc507cb10f962d/raw/python-version-dump.py)

Example output:

    sys.executable                : '/usr/bin/python'
    sys.version                   : '2.7.3 (default, Apr 20 2012, 22:39:59) \n[GCC 4.6.3]'
    sys.prefix                    : '/usr'
    sys.exec_prefix               : '/usr'
    re.__file__                   : '/usr/lib/python2.7/re.pyc'
    setuptools.__version__        : '0.6'
    setuptools.__path__           : ['/usr/lib/python2.7/dist-packages/setuptools']
"""

def show(name, value):
    print ('{n:30}: {v!r}'.format(n=name, v=value))

# The basics
import sys
show('sys.executable', sys.executable)
show('sys.version', sys.version)
show('sys.prefix', sys.prefix)
show('sys.exec_prefix', sys.exec_prefix)

# Something from the standard library
import re
show('re.__file__', re.__file__)

# Check some common packaging/installation related tools
try:
    import setuptools
    show('setuptools.__file__', setuptools.__file__)
    show('setuptools.__version__', setuptools.__version__)
except:
    pass

try:
    import pkg_resources
    show('pkg_resources.__file__', pkg_resources.__file__)
except:
    pass

try:
    import distribute
    show('distribute.__file__', distribute.__file__)
    show('distribute.__version__', distribute.__version__)
except:
    pass

try:
    import pip
    show('pip.__file__', pip.__file__)
    show('pip.__version__', pip.__version__)
except:
    pass