update py version to 3.10 for gitactions linting (#404)

* pdate py version to 3.10 for  gitactions linting

* add third digit to py version

* make  py version a string

.github/workflows/python.yml

@@ -29,10 +29,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v3
-    - name: Set up Python 3.9
+    - name: Set up Python 3.10
       uses: actions/setup-python@v3
       with:
-        python-version: 3.9
+        python-version: '3.10'
       # flake8 version should be same as the version in requirements/test.txt
       # to avoid lint errors on CI
     - name: pip install flak8

tests/base.py

@@ -20,10 +20,6 @@
 from optimizely import optimizely
 
 
-def long(a):
-    raise NotImplementedError('Tests should only call `long` if running in PY2')
-
-
 class BaseTest(unittest.TestCase):
     def assertStrictTrue(self, to_assert):
         self.assertIs(to_assert, True)