Gmail API Python Quickstart gmail-python-quickstart.json: No such file or directory

I'm trying to execute this example here: Step 3 @ Gmail API Python Quickstart I got two errors and got aroudn them

1. Unable to unintsall a exisiting version of six - got around by setting it to

   --ignore-installed six

2. Unable to find httplib2 - got around by doing a specific

   pip2 install httplib2

Now when I go the working directory where my client_secret.json & quickstart.py are located and execute a python quickstart.py I get the follwoing error. Any ideas how to get this code to execute.

bash-3.2$ python quickstart.py 
/Library/Python/2.7/site-packages/oauth2client/_helpers.py:255: UserWarning: Cannot access /Users/Zafar/.credentials/gmail-python-quickstart.json: No such file or directory
  warnings.warn(_MISSING_FILE_MESSAGE.format(filename))
Traceback (most recent call last):
  File "quickstart.py", line 73, in <module>
    main()
  File "quickstart.py", line 57, in main
    credentials = get_credentials()
  File "quickstart.py", line 45, in get_credentials
    credentials = tools.run_flow(flow, store, flags)
  File "/Library/Python/2.7/site-packages/oauth2client/_helpers.py", line 133, in positional_wrapper
    return wrapped(*args, **kwargs)
  File "/Library/Python/2.7/site-packages/oauth2client/tools.py", line 218, in run_flow
    authorize_url = flow.step1_get_authorize_url()
  File "/Library/Python/2.7/site-packages/oauth2client/_helpers.py", line 133, in positional_wrapper
    return wrapped(*args, **kwargs)
  File "/Library/Python/2.7/site-packages/oauth2client/client.py", line 1934, in step1_get_authorize_url
    return _helpers.update_query_params(self.auth_uri, query_params)
  File "/Library/Python/2.7/site-packages/oauth2client/_helpers.py", line 222, in update_query_params
    parts = urllib.parse.urlparse(uri)
AttributeError: 'Module_six_moves_urllib_parse' object has no attribute 'urlparse'