using PyPlot hangs/kills julia 1.8.5 or 1.9.0 on MacOS

[deszoeke]

using PyPlot hangs/kills julia 1.8.5 or 1.9.0 on MacOS

[stevengj]

Works for me… but I haven't updated my conda packages recently, maybe there is a problem with the latest anaconda release? You could try pinning numpy or matplotlib to an older version…

[deszoeke]

I recently installed mamba (outside julia), and it appears julia PyCall is using it:

using PyCall
os = pyimport("os")
os.environ
 ... , 'CONDA_PYTHON_EXE': '$HOME/mambaforge/bin/python'

I had installed anaconda on my system, but the conda environment became unsolvable, so I switched to mamba. I didn't expect this to affect julia. I had thought the conda in julia was a separate installation (I use ENV["PYTHON"]="" before building PyCall), but it appears mine got connected to mamba.

[kevinpolisano]

On Mac OS 14.0, using PyPlot leads to:

julia> using PyPlot
[1]    13395 killed     /Applications/Julia-1.9.app/Contents/Resources/julia/bin/julia

Saving session...completed.

[Opération terminée]

julia> versioninfo()
Julia Version 1.9.4
Commit 8e5136fa297 (2023-11-14 08:46 UTC)
Build Info:
  Official https://julialang.org/ release
Platform Info:
  OS: macOS (x86_64-apple-darwin22.4.0)
  CPU: 16 × Intel(R) Core(TM) i9-9880H CPU @ 2.30GHz
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-14.0.6 (ORCJIT, skylake)
  Threads: 1 on 16 virtual cores

[stevengj]

Works fine for me on MacOS 14 and Julia 1.9.4 … maybe your Python installation is broken?

If you are using Python via Conda.jl (which is the default on MacOS), you could try removing conda (rm -rf ~/.julia/conda) and rebuilding PyCall and PyPlot.