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Implements ``callable`` using ctypes (useful on CPython 3.0 and 3.1).

Project description

Implements callable using ctypes (useful on CPython 3.0 and 3.1, which is missing the callable function).

Versioning

This library’s version numbers follow the SemVer 2.0.0 specification.

Installation

pip install ctypes-callable

Usage

The use-case for using this module is if:

  1. You are using an early CPython 3 release missing callable.
  2. You cannot upgrade to a newer CPython 3 for some reason.
  3. You want to use code which uses the callable builtin.

To do this, run this before any code that uses callable (for example, usercustomize or sitecustomize might be good places):

import ctypes_callable
import builtins
builtins.callable = ctypes_callable.callable

Portability

This module will fail on import on Jython, IronPython, PyPy, MicroPython, PyPy.js, Brython, Transcrypt, and probably any other implementation besides CPython, because it relies on accessing the Python C API through ctypes.

If you’re looking for something that’s basically this, but won’t break upon import on other Python implementations, you can use polyfill-callable.

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