Enable checking for python norms and fix violating code (#1168)

This PR:
- enables checking coding norms on python scripts using `pycodestyle` via github actions
- adds the rules of the norms in `.pycodestyle`
- fixes python scripts that violate the norms using `autopep8`.


If a python script is failing during norm check, it can be fixed with the following command:
```
$> autopep8 -i --max-line-length 160 --ignore E402,W504 /path/to/offending_script.py
```

.github/workflows/pynorms.yaml

@@ -0,0 +1,24 @@
+name: Check Norms
+on: [push, pull_request]
+
+jobs:
+  check_norms:
+    runs-on: ubuntu-latest
+    name: Check Python coding norms with pycodestyle
+
+    steps:
+
+    - name: Install dependencies
+      run: |
+        pip install --upgrade pip
+        pip install pycodestyle
+
+    - name: Checkout
+      uses: actions/checkout@v3
+      with:
+        path: global-workflow
+
+    - name: Run pycodestyle
+      run: |
+        cd $GITHUB_WORKSPACE/global-workflow
+        pycodestyle -v --config ./.pycodestyle .

.pycodestyle

@@ -0,0 +1,6 @@
+[pycodestyle]
+count = False
+ignore = E402,W504
+max-line-length = 160
+statistics = True
+exclude = Experimental