方法一

>>> from platform import python_version

>>> print python_version()

2.7.8

方法二

>>> import sys

>>> sys.version

'2.7.3 (default, Feb 27 2014, 19:58:35) \n[GCC 4.6.3]'

>>> sys.version_info

sys.version_info(major=2, minor=7, micro=3, releaselevel='final', serial=0)