No module named 'urlparse' but I'm not using urlparse

The flask_oauth library doesn't support Python3 - you'll see from the traceback:

Traceback (most recent call last):
  File "app.py", line 3, in <module>
    from flask_oauth import OAuth
  File "/Users/matthealy/virtualenvs/test/lib/python3.6/site-packages/flask_oauth.py", line 13, in <module>
    from urlparse import urljoin
ModuleNotFoundError: No module named 'urlparse'

The urlparse module's behaviour was changed in Python 3:

https://docs.python.org/2/library/urlparse.html

The urlparse module is renamed to urllib.parse in Python 3.

This has been raised with the package maintainers on Github. The source on Github looks to be fixed, but the fixed version has not been pushed to pypi.

The solution suggested on Github is to install directly from source instead of pypi:

pip install git+https://github.com/mitsuhiko/flask-oauth

For python3 I have used

from urllib.parse import urlparse

instead of from urlparse import parse_qsl, urlparse and it works

recommended doc : https://docs.python.org/3/library/urllib.parse.html