Python - Version

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Code - Version of Python - The python interpreter

This naming convention of compiled files allows compiled modules from different versions of Python to coexist.

With the Sys package

import sys
print sys.version
2.7.4 (default, Apr  6 2013, 19:55:15) [MSC v.1500 64 bit (AMD64)]

Windows uninstaller

Python Version

Supporting multiple version

https://packaging.python.org/guides/supporting-multiple-python-versions/

From ansible\module_utils\six\__init__.py

PY2 = sys.version_info[0] == 2
PY3 = sys.version_info[0] == 3
PY34 = sys.version_info[0:2] >= (3, 4)

if PY3:
    string_types = str,
    integer_types = int,
    class_types = type,
    text_type = str
    binary_type = bytes

    MAXSIZE = sys.maxsize
else:
    string_types = basestring,
    integer_types = (int, long)
    class_types = (type, types.ClassType)
    text_type = unicode
    binary_type = str
    
    if sys.platform.startswith("java"):
        # Jython always uses 32 bits.
        MAXSIZE = int((1 << 31) - 1)
    else:
        # It's possible to have sizeof(long) != sizeof(Py_ssize_t).
        class X(object):

            def __len__(self):
                return 1 << 31
        try:
            len(X())
        except OverflowError:
            # 32-bit
            MAXSIZE = int((1 << 31) - 1)
        else:
            # 64-bit
            MAXSIZE = int((1 << 63) - 1)
        del X

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