JuliaPy/PythonCall.jl

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Python and Julia in harmony.

Stars: 1.1k
Forks: 86
Open beginner issues: 0
Indexed issues: 182
Avg merge: 1d 22h
Merged PRs (30d): 3

Dominant language: Julia
License: MIT
Last GitHub push: Sep 18, 2026
Latest indexed: Sep 18, 2026
Contributing guide: No contributing guide
Code of conduct: No code of conduct
Beginner labels: help wanted good first issue

Beginner friendly Everything

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182 open issues indexed

JuliaCall 0.9.35 regression: initialization fails when Julia executable is a symlink Open

Difficulty 3/5 1-2 days Newbie friendliness 75/100

JuliaPy/PythonCall.jl#816 · Opened Sep 10, 2026
holding GIL on non-sticky tasks leads to undefined behavior Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 48/100

JuliaPy/PythonCall.jl#809 · 2 comments · Opened Aug 27, 2026
Locking julia dependencies Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 35/100

JuliaPy/PythonCall.jl#805 · 4 comments · Opened Aug 10, 2026
Freeze the resolved interpreter for child processes Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 68/100

JuliaPy/PythonCall.jl#796 · Opened Jul 6, 2026
README example 1 error at `pytable(iris)` Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 55/100

JuliaPy/PythonCall.jl#795 · Opened Jun 26, 2026
Ephemeral environments for Julia+Python packages Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

JuliaPy/PythonCall.jl#790 · Opened Jun 11, 2026
On PythonCall load, UndefRefError: access to undefined reference Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 45/100

JuliaPy/PythonCall.jl#765 · 6 comments · Opened Apr 22, 2026
at_jl_exit sometimes crashes Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 10/100

JuliaPy/PythonCall.jl#764 · Opened Apr 21, 2026
Improve juliacall startup time? Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 35/100

JuliaPy/PythonCall.jl#762 · Opened Apr 21, 2026
Memory leak when calling certain python packages from Julia via PythonCall Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 45/100

JuliaPy/PythonCall.jl#759 · Opened Apr 18, 2026
Unable to import Python module Open

question

Difficulty 3/5 1-2 days Newbie friendliness 35/100

JuliaPy/PythonCall.jl#757 · 1 comment · Opened Apr 3, 2026
Memory allocated when creating Python objects is never automatically freed Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

JuliaPy/PythonCall.jl#754 · Opened Mar 12, 2026
Multithreading with PythonCall and PythonPlot leads to a EXCEPTION_ACCESS_VIOLATION Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

JuliaPy/PythonCall.jl#749 · 1 reaction · Opened Feb 12, 2026
Benchmarks failing in CI Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

JuliaPy/PythonCall.jl#720 · 2 comments · Opened Nov 14, 2025
Make `to_numpy` conversions consistent with NumPy `dtype` Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

JuliaPy/PythonCall.jl#719 · 7 comments · Opened Nov 13, 2025
Idea: Do not load libpython when precompiling Open

JuliaPy/PythonCall.jl#701 · 2 comments · 1 assignee · Opened Oct 23, 2025
Idea: acquire the GIL in all API functions Open

JuliaPy/PythonCall.jl#697 · 2 comments · 1 reaction · 1 assignee · Opened Oct 16, 2025
concurrency fails w/o warmup Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 42/100

JuliaPy/PythonCall.jl#695 · 3 comments · Opened Oct 15, 2025
Add new PyStr wrapper type Open

JuliaPy/PythonCall.jl#691 · 1 assignee · Opened Oct 13, 2025
Two calls needed to pyimport a module in Julia, the first one crashes Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

JuliaPy/PythonCall.jl#681 · 1 comment · Opened Oct 1, 2025
Why must both PYTHON_JULIACALL_PROJECT and PYTHON_JULIACALL_EXE be set together? Open

Difficulty 3/5 1-2 days Newbie friendliness 38/100

JuliaPy/PythonCall.jl#675 · 3 comments · Opened Sep 19, 2025
rare ijl_bounds_error_int with Julia 1.11 & python 3.13 Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 25/100

JuliaPy/PythonCall.jl#669 · 4 comments · Opened Sep 16, 2025
Support uv instead of CondaPkg Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 28/100

JuliaPy/PythonCall.jl#665 · 3 comments · Opened Sep 8, 2025
new prioritisation scheme for pyconvert rules Open

JuliaPy/PythonCall.jl#661 · 1 comment · 1 assignee · Opened Aug 29, 2025
ERROR: InitError: expected package `Measurements [eff96d63]` to exist in the manifest Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 35/100

JuliaPy/PythonCall.jl#660 · 3 comments · Opened Aug 24, 2025
Consider supporting polars Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

JuliaPy/PythonCall.jl#654 · 1 comment · Opened Aug 18, 2025
Support free-threaded Python [3.14] Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 42/100

JuliaPy/PythonCall.jl#653 · 4 comments · Opened Aug 18, 2025
SSL CERTIFICATE_VERIFY_FAILED Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

JuliaPy/PythonCall.jl#651 · 5 comments · Opened Aug 12, 2025
Rename this?? Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

JuliaPy/PythonCall.jl#646 · 2 comments · Opened Jul 17, 2025
Segmentation fault on jl.seval("using ...") Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 25/100

JuliaPy/PythonCall.jl#639 · 8 comments · 1 reaction · Opened Jul 14, 2025
pandas.Categorical not preserved during DataFrame conversion and jl.convert fails Open

question

Difficulty 4/5 3-5 days Newbie friendliness 35/100

JuliaPy/PythonCall.jl#630 · 1 comment · Opened Jun 26, 2025
juliacall fails from subprocess if already initialied Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

JuliaPy/PythonCall.jl#628 · Opened Jun 19, 2025
A GC triggered while a thread is blocking on the GIL lock can freeze julia forever Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 38/100

JuliaPy/PythonCall.jl#627 · 12 comments · 2 reactions · Opened Jun 19, 2025
PYTHON_JULIACALL_BINDIR not effective? Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 35/100

JuliaPy/PythonCall.jl#619 · 7 comments · Opened May 29, 2025
`libhdf5` not defined for `juliacall` `0.9.25` on M1 runner when using python built with openssl 1.x Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

JuliaPy/PythonCall.jl#615 · 3 comments · Opened May 19, 2025
OpenSSL version restriction outdated Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 38/100

JuliaPy/PythonCall.jl#612 · 3 comments · Opened May 8, 2025
Can't use PythonCall in Custom System Image Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

JuliaPy/PythonCall.jl#600 · Opened Apr 1, 2025
Error accessing attribute of Python object from Julia. Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 45/100

JuliaPy/PythonCall.jl#598 · 1 comment · Opened Mar 27, 2025
[Enhancement] Allow `Python: <class 'module'>` as argument to `pyimport` Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 45/100

JuliaPy/PythonCall.jl#590 · Opened Jan 20, 2025
conda pkg openssl is restricted to version <3.1 - this prevents installation of recent r-base Open

question

Difficulty 4/5 3-5 days Newbie friendliness 25/100

JuliaPy/PythonCall.jl#587 · 7 comments · Opened Jan 15, 2025
Compatibility Issue with Python 3.12.6 Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 30/100

JuliaPy/PythonCall.jl#584 · 4 comments · Opened Jan 2, 2025
RFC for ergonomically passing Python variables to Julia Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

JuliaPy/PythonCall.jl#580 · Opened Dec 30, 2024
juliacall: Julia GC triggered from a python thread causes hangs Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 30/100

JuliaPy/PythonCall.jl#578 · 3 comments · 1 reaction · Opened Nov 28, 2024
Juliacall with SB3 for RL in WSL bings to segmetation fault problems Open

question

Difficulty 5/5 Over a week Newbie friendliness 25/100

JuliaPy/PythonCall.jl#577 · 1 reaction · Opened Nov 23, 2024
how to optimize reading long tuples from julia to python Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 35/100

JuliaPy/PythonCall.jl#575 · 6 comments · Opened Nov 18, 2024
About output "Julia types" from Python functions. Open

question

Difficulty 4/5 3-5 days Newbie friendliness 25/100

JuliaPy/PythonCall.jl#574 · 1 comment · Opened Nov 14, 2024
Acknowledging PythonCall in scientific publications Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 30/100

JuliaPy/PythonCall.jl#573 · 1 comment · Opened Nov 11, 2024
Segmentation fault with threaded Distributed Open

bug

Difficulty 5/5 Over a week Newbie friendliness 20/100

JuliaPy/PythonCall.jl#572 · 7 comments · Opened Nov 9, 2024
Support Python 3.13 (and t version of it) Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

JuliaPy/PythonCall.jl#568 · Opened Oct 23, 2024
Converting objects; e.g. support dataclasses? Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 25/100

JuliaPy/PythonCall.jl#567 · Opened Oct 23, 2024

JuliaPy/PythonCall.jl

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