# in python3.10 this will report as '3.1' (should be '3.10')
python_version = sys.version[:3]  # YTT101
# in python3.10 this will report as '1' (should be '10')
py_minor = sys.version[2]
# in python3.10 this will be False (which goes against developer intention)
sys.version >= '3.5'  # YTT103
# correct way to do this
python_version = '{}.{}'.format(*sys.version_info)
py_minor = str(sys.version_info[1])
sys.version_info >= (3, 5)

# in python4 this will report as `False` (and suddenly run python2 code!)
is_py3 = sys.version_info[0] == 3  # YTT201
# in python4 this will report as `False` (six violates YTT201!)
if six.PY3:  # YTT202
    print('python3!')
if sys.version_info[0] >= 3 and sys.version_info[1] >= 5:  # YTT203
    print('py35+')
if sys.version_info.major >= 3 and sys.version_info.minor >= 6:  # YTT204
    print('py36+')
# correct way to do this
is_py3 = sys.version_info >= (3,)
if not six.PY2:
    print('python3!')
if sys.version_info >= (3, 5):
    print('py35+')
if sys.version_info >= (3, 6):
    print('py36+')

# in python10 this will report as '1'
python_major_version = sys.version[0]  # YTT301
# in python10 this will be False
if sys.version >= '3':  # YTT302
    print('python3!')
# in python10 this will be False
if sys.version[:1] >= '3':  # YTT303
    print('python3!')
# correct way to do this
python_major_version = str(sys.version_info[0])
if sys.version_info >= (3,):
    print('python3!')
if sys.version_info >= (3,):
    print('python3!')