How to manually install Flask extensions?
flask, python
Solution
The solution is to put the `flask_login.py` file in the same directory as my app.py file. No modification of the `flask/ext/__init__.py` file is necessary.
The `flask.ext` module is intended only as a an extension importer, not a repository for installed extensions. Based on the import path, I thought the `flask/ext` folder was where extensions were to be copied. This was incorrect. Extensions simply need to be somewhere on the python path.
Problem
I have a Flask project which I've put the flask module (version 0.9) directly beside my app.py file. I've done this so that I can bundle everything into a version control repository that won't require anyone else using it to install additional Python modules. I want to use flask-login so I've tried to manually install it by downloading the latest version and putting the flask_login.py file in my "local" flask/ext/ directory. However, while I can `import flask` and `import flask.ext`, I am unable to `import flask.ext.login` with Python throwing `ImportError: No module named flask.ext.login`. `import flask.ext.flask_login` throws an import error as well. Is there something I have to do differently if Flask and it's extensions are local to the app.py?