Fix on lower versions

Author: DanielNoord

tests/functional/u/undefined/undefined_loop_variable.py

@@ -1,6 +1,11 @@
 # pylint: disable=missing-docstring,redefined-builtin, consider-using-f-string, unnecessary-direct-lambda-call
 
-from typing import NoReturn
+import sys
+
+if sys.version_info >= (3, 8):
+    from typing import NoReturn
+else:
+    from typing_extensions import NoReturn
 
 
 def do_stuff(some_random_list):

tests/functional/u/undefined/undefined_loop_variable.txt

@@ -1,4 +1,4 @@
-undefined-loop-variable:9:11:9:14:do_stuff:Using possibly undefined loop variable 'var':UNDEFINED
-undefined-loop-variable:28:7:28:11::Using possibly undefined loop variable 'var1':UNDEFINED
-undefined-loop-variable:78:11:78:14:do_stuff_with_redefined_range:Using possibly undefined loop variable 'var':UNDEFINED
-undefined-loop-variable:196:11:196:20:find_even_number:Using possibly undefined loop variable 'something':UNDEFINED
+undefined-loop-variable:14:11:14:14:do_stuff:Using possibly undefined loop variable 'var':UNDEFINED
+undefined-loop-variable:33:7:33:11::Using possibly undefined loop variable 'var1':UNDEFINED
+undefined-loop-variable:83:11:83:14:do_stuff_with_redefined_range:Using possibly undefined loop variable 'var':UNDEFINED
+undefined-loop-variable:201:11:201:20:find_even_number:Using possibly undefined loop variable 'something':UNDEFINED