Fixed E265 flake8 errors

block comment should start with ‘# ‘

testing/test_helpconfig.py

@@ -5,7 +5,7 @@ import pytest
 def test_version(testdir, pytestconfig):
     result = testdir.runpytest("--version")
     assert result.ret == 0
-    #p = py.path.local(py.__file__).dirpath()
+    # p = py.path.local(py.__file__).dirpath()
     result.stderr.fnmatch_lines([
         '*pytest*%s*imported from*' % (pytest.__version__, )
     ])