Fix depencency format

setup.cfg

@@ -35,10 +35,7 @@ setup_requires =
     pytest-runner
 install_requires =
     makefun>=1.5.0
-    # we're using typing_extensions even for new versions of python, so we don't pollute our code
-    # with try/except every time we use new feature.
-    # typing_extensions will use version from typing module if it detects new enough python.
-    typing-extensions>=4.2;python_version>='3.6',<'3.10'
+    typing-extensions>=4.2;python_version>'3.6' and python_version<'3.10'
     # note: do not use double quotes in these, this triggers a weird bug in PyCharm in debug mode only
     funcsigs;python_version<'3.3'
     enum34;python_version<'3.4'