Question about PyPlot

[stevengj]

@Raymond

The Python package matplotlib could not be imported by pyimport. Usually this means
that you did not install matplotlib in the Python version being used by PyCall.

PyCall is currently configured to use the Python version at:

/Library/Frameworks/Python.framework/Versions/3.10/bin/python3

This error means just what it says. If you run python3 and do import matplotlib in Python, does it work?

By default, on a Mac, PyCall and PyPlot normally install their own Python distro via conda-forge, and then will install Matplotlib for you. You must have overridden this by setting the PYTHON environment variable manually, which is really only for people who know what they are doing.

@ctkelley

Try adding

ENV["PYTHON"]=""

to your startup.jl

You don’t need to do it in your startup.jl, and by itself this will do nothing because it only affects building PyCall. You should instead do:

julia> ENV["PYTHON"]=""

pkg> build PyCall

and then re-start Julia.

@Krastanov

Using that pre-installed python has always been deeply problematic

That’s why PyCall defaults to using Conda.jl to install its own Python on Mac and Windows.