sys_version_info_hack.py

#! /usr/bin/env python
#
# sys_version_info_hack.py: hack for redefining sys.version_info to be python3 compatible
#
# python3:
# >>> sys.version_info
# sys.version_info(major=3, minor=6, micro=5, releaselevel='final', serial=0)
# >>> type(sys.version_info)
# <class 'sys.version_info'>
#
# python2 (pre 2.7):
# In [11]: sys.version_info
# Out[11]: (2, 6, 7, 'final', 0)
# In [12]: type(sys.version_info)
# Out[12]: tuple
#
# Usage:
#    import sys
#    import sys_version_info_hack
#    print("Python major: {m}".format(m=sys.version_info.major))
#

import sys

SYS_VERSION_INFO_OLD = sys.version_info

class sys_version_info:
    """Class to mimic Python3 version_info"""

    def __init__(self, major=SYS_VERSION_INFO_OLD[0],
                 minor=SYS_VERSION_INFO_OLD[1],
                 micro=SYS_VERSION_INFO_OLD[2],
                 releaselevel=SYS_VERSION_INFO_OLD[3],
                 serial=SYS_VERSION_INFO_OLD[4]):
        """Constructor"""
        self.sys_version_info_old = SYS_VERSION_INFO_OLD
        self.major = major
        self.minor = minor
        self.micro = micro
        self.releaselevel = releaselevel
        self.serial = serial

    def __getitem__(self, index):
        """Return old-style INDEX into sys.version_info"""
        return  self.sys_version_info_old[index]

# Replace old-style sys.version_info with new-style
if type(sys.version_info) == tuple:
    sys.version_info = sys_version_info()