legacy-api-wrap 1.4.1


pip install legacy-api-wrap

  Latest version

Released: Nov 22, 2024

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Author: Philipp A.
Requires Python: >=3.8

Classifiers

Development Status
  • 5 - Production/Stable

Intended Audience
  • Developers

Programming Language
  • Python :: 3 :: Only
  • Python :: 3.8
  • Python :: 3.9
  • Python :: 3.10
  • Python :: 3.11
  • Python :: 3.12
  • Python :: 3.13

Topic
  • Software Development :: Libraries :: Python Modules

Typing
  • Typed

This module defines a decorator to wrap legacy APIs. The primary use case is APIs defined before keyword-only parameters existed.

>>> from legacy_api_wrap import legacy_api

We have a function with many positional parameters lying around:

>>> def fn(a, b=None, d=1, c=2):
...     return c, d, e

We want to convert the positional parameters d and c to keyword-only, change their order and add a parameter. For this we only need to specify name and order of the old positional parameters in the decorator.

>>> @legacy_api('d', 'c')
... def fn(a, b=None, *, c=2, d=1, e=3):
...     return c, d, e

After adding the decorator, users can keep calling the old API and get a DeprecationWarning:

>>> fn(12, 13, 14) == (2, 14, 3)
True

Wheel compatibility matrix

Platform Python 3
any

Files in release

Extras:
Dependencies: