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                                            Ben Letham

Pip install error ModuleNotFoundError: No module named 'pystan'

That's odd. Did pystan actually install? ``` import pystan pystan.__version__ ``` If not could you try ``` pip install --upgrade pystan ``` and see if it works? and then same...

Pip install error ModuleNotFoundError: No module named 'pystan'

@maartenmennes Can you check the pystan info from my previous post? and is there Anaconda or something like that involved?

Pip install error ModuleNotFoundError: No module named 'pystan'

Including fbprophet is working?

Pip install error ModuleNotFoundError: No module named 'pystan'

Interesting, I'm not sure what is going on with that error, I haven't seen this myself with pip installs. As for ds and y, yes that definitely should give better...

Pip install error ModuleNotFoundError: No module named 'pystan'

So, adding pystan to setup_requires does indeed make sure that it is in place before trying to build fbprophet, and thus avoids this confusing error message. However, it seems (TIL)...

Pip install error ModuleNotFoundError: No module named 'pystan'

Here are some commands to repro this issue: ``` cd /path/to/prophet/python sudo pip3 uninstall --yes fbprophet sudo pip3 uninstall --yes pystan sudo rm -rf dist sudo python3 setup.py sdist cd...

Pip install error ModuleNotFoundError: No module named 'pystan'

#685 just got merged which fixes this for pip >=10 by using a pyproject.toml file.

Pip install error ModuleNotFoundError: No module named 'pystan'

This has been pushed to PyPI and should be fixed now for pip >=10.

Pip install error ModuleNotFoundError: No module named 'pystan'

We reverted the addition of the pyproject.toml file in https://github.com/facebook/prophet/commit/34af9efb89dd22df8237a1e9363f67521e932100. Here's the deal: fbprophet requires pystan to build. `pip install ` will by default do the install in this order:...

Pip install error ModuleNotFoundError: No module named 'pystan'

@syracusepro these errors are coming from the stocker.py file and do not seem to involve fbprophet. (fbprophet is mentioned in the first one just with a FutureWarning, which is unrelated...