# JuliaPy/PythonCall.jl

Python and Julia in harmony.

Repository: https://github.com/JuliaPy/PythonCall.jl
Canonical: https://ross.abutalabs.com/products/pythoncalljl
Homepage: https://juliapy.github.io/PythonCall.jl/stable/
Language: Julia
License: MIT
License Family: permissive
Topics: julia, python, interoperability, ffi
Last push: 2026-08-14T16:21:57+00:00

## Health v2 (maintenance only)
Score: 94/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 97, release rhythm 87, longevity 100
- inputs: {"age_days": 2129, "days_push": 19, "days_rel": 86, "gap_med": 29, "n_releases_24m": 12}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1066, forks 84 (observed 2026-08-28T04:03:27.061472+00:00)

## What it is
PythonCall.jl is a Julia library providing a symmetric interface for calling Python code from Julia and Julia code from Python (via the JuliaCall Python module). It offers fast non-copying conversion of numeric arrays and intuitive wrappers mapping Python objects to their Julia counterparts and vice versa.

## Use cases
- call python libraries like numpy or pandas from julia
- use julia functions from python in an ipython notebook
- convert julia dataframes to pandas dataframes without copying
- embed julia code in a python data science workflow
- plot julia data with python libraries like seaborn or matplotlib
- share numeric arrays between julia and python in place

## When to choose
- you need bidirectional julia-python interop with a symmetric interface
- you want zero-copy sharing of numeric arrays between the two languages
- you want python code to look like python and julia code to look like julia

## When to avoid
- you only need one-directional calls and a simpler tool suffices
- you use old versions of julia (<1.10) or python (<3.10)
- you need pure-python or pure-julia deployment without the other runtime installed

## Facets
- artifact type: library
- maturity: active
- function: sdk, developer-tools
- domain: programming-languages, developer-tools, data-science, cross-platform
- platform: python, windows, cross-platform
- tags: julia, python, interoperability, ffi, language-bridge, numpy, dataframe-conversion, linux, macos

## Member repositories
- JuliaPy/PythonCall.jl (main) score 94

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:27.061472+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T06:55:13.400174+00:00, confidence not recorded.
  - readme: https://github.com/JuliaPy/PythonCall.jl (fetched 2026-08-28T04:03:27.061472+00:00, sha 0eba1e143b6b)
  - homepage: https://juliapy.github.io/PythonCall.jl/stable/ (fetched 2026-08-29T12:57:04.568261+00:00, sha abd363d4e98f)
- Data as of 2026-08-30T08:39:29.467469+00:00.