added pycodestyle conformance

pipelines/test_codestyle.py

+import glob
+import unittest
+import pycodestyle
+
+
+class TestCodeFormat(unittest.TestCase):
+
+    def test_codestyle_conformance(self):
+        """Test that we conform to PEP-8."""
+        style = pycodestyle.StyleGuide(
+            quiet=True, ignore=["E121", "E123", "E126", "E226", "E24", "E704", "W503", "W504", "E501"])
+        result = style.check_files(glob.glob("./**/*.py"))
+        print("================ pycodestyle statistics ================")
+        if result.total_errors == 0:
+            print("Your code style is GREAT!")
+        else:
+            for line in result.get_statistics():
+                print(line)
+            print("*** Please use the command below to check code yourself!!! ***")
+            print("pycodestyle ./**/*.py --ignore=E121,E123,E126,E226,E24,E704,W503,W504,E501")
+        print("========================================================")
+        self.assertEqual(result.total_errors, 0, "Found code style errors (and warnings).")