use six instead of try except
@@ -5,6 +5,7 @@ import logging
import warnings
from pip._vendor import six
+from pip._vendor.six.moves import zip_longest
from pip.basecommand import Command
from pip.cmdoptions import index_group, make_option_group
@@ -14,12 +15,6 @@ from pip.utils import dist_is_editable, get_installed_distributions
from pip.utils.deprecation import RemovedInPip11Warning
from pip.utils.packaging import get_installer
-try:
- from itertools import zip_longest
-except ImportError:
- from itertools import izip_longest as zip_longest # type: ignore
-
-
logger = logging.getLogger(__name__)
