[issue24625] py.exe executes #! in windows

[eryksun]

eryksun added the comment:

To support cross-platform shebangs, the launcher special-cases the following virtual commands [1]:

    /usr/bin/env python
    /usr/bin/python
    /usr/local/bin/python
    python

The "env" virtual command searches the PATH environment variable. Note that it's /usr/bin/env since that's the most common location for the env utility on POSIX systems. If /bin/env is used there should at least be a symlink to it in /usr/bin. 

[1]: https://docs.python.org/3/using/windows.html#shebang-lines

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nosy: +eryksun
versions: +Python 3.4 -Python 2.7

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