Remote Start & Debug Python in PyCharm

Context:  a python flask server is running on vagrant, I need to remotely debut it. 

PyCharm has integration with Vagrant, you can configure it in Settings/Vagrant,  I failed to make it work though, “stdin is not tty” error pops out:

But fret not, it turns out you can directly ssh into Vagrant and start/debug python.

First, set up a Python remote interpreter in “Settings/Project- Interpreter”: 

Now, “run/edit configurations”, choose the remote Python interpret, and map your local files with remote files.

PyCharm will perform some actions to make this work, if you want to know what it does, check its log. You can find the log in “Help/Show Log In Explorer”.