检查python版本

import sys


# 检查python版本，如果是低于3.5就退出程序
def check_version():
    v = sys.version_info
    # print(v)  # sys.version_info(major=3, minor=6, micro=5, releaselevel='final', serial=0)
    if v.major == 3 and v.minor >= 5:
        return
    print('Your current python is %d.%d. Please use Python 3.6.' % (v.major, v.minor))
    exit(1)