red-data-tools/pycall.rb

Health v2 · maintenance only

Adoption not part of the score

1116 stars · 88 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

PyCall.rb is a Ruby library that lets Ruby code directly call Python functions and interoperate with Python modules via the CPython C API. It imports arbitrary Python modules into Ruby with automatic type conversion for numbers, strings, arrays, and hashes.

Use cases

• call python functions from ruby
• use numpy or pandas in a ruby program
• run machine learning models from ruby
• import python modules into ruby
• bridge ruby and python codebases
• use python libraries for data science in ruby

When to choose

• you need Python's ecosystem (numpy, pandas, scikit-learn) from Ruby code
• you want automatic type conversion between Ruby and Python objects
• you're building Ruby data-science or ML tooling on top of Python libraries

When to avoid

• your workload is heavily multi-threaded - PyCall does not officially support multi-threaded use
• you need full bidirectional interop (calling Ruby from Python)
• you can't provide a Python shared library (e.g. default pyenv builds without --enable-shared)

Facets

library · maturity active

sdk interpreter data-science machine-learning developer-tools programming-languages ruby python windows ruby-gem python-interop ffi language-bridge rubydatascience linux macos

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For agents

markdown · JSON · MCP: product_card(name="red-data-tools/pycall.rb")