/usr/lib/python2.7/dist-packages/geventwebsocket/utils.py is in python-gevent-websocket 0.9.3-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45  | import subprocess
def get_version(version=None):
    "Returns a PEP 386-compliant version number from VERSION."
    if version is None:
        from geventwebsocket import VERSION as version
    else:
        assert len(version) == 5
        assert version[3] in ('alpha', 'beta', 'rc', 'final')
    # Now build the two parts of the version number:
    # main = X.Y[.Z]
    # sub = .devN - for pre-alpha releases
    #     | {a|b|c}N - for alpha, beta and rc releases
    parts = 2 if version[2] == 0 else 3
    main = '.'.join(str(x) for x in version[:parts])
    sub = ''
    if version[3] == 'alpha' and version[4] == 0:
        hg_changeset = get_hg_changeset()
        if hg_changeset:
            sub = '.dev{0}'.format(hg_changeset)
    elif version[3] != 'final':
        mapping = {'alpha': 'a', 'beta': 'b', 'rc': 'c'}
        sub = mapping[version[3]] + str(version[4])
    return str(main + sub)
def get_hg_changeset():
    rev, err = subprocess.Popen(
        'hg id -i',
        shell=True,
        stdout=subprocess.PIPE,
        stderr=subprocess.PIPE
    ).communicate()
    if err:
        return None
    else:
        return rev.strip().replace('+', '')
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