def check_python():
    info = sys.version_info
    if info[0] == 2 and not info[1] >= 6:
        print('Python 2.6+ required')
        sys.exit(1)
    elif info[0] == 3 and not 3 >= info[1]:
        print('Python 3.3+ required')
        sys.exit(1)
    elif info[0] not in [2, 3]:
        print('Python version not supported')
        sys.exit(1)
dataset/ETHPy150Open ziggear/shadowsocks/shadowsocks/shell.py/check_python/swapped operands of `>=`