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Has anyone installed flask_socketio (or other flask extensions)?

When I try the normal way, it says access denied (pip install flask_socketio).

When I use pip3 or pip3.5, it still says access denied.

When I say pip3.6, it says I already have it, but when I try to run it in my flask_app.py, it doesn't work.

I don't really know what else to try - how should I install it?

nevermind, I ended up getting it with pip3.5 install --user flask-socketio

Yes, that should work fine. One thing to note, though -- we don't support WebSockets on PythonAnywhere.