singledispatch-with-type-arg-support

Standalone "preview" of https://github.com/python/cpython/pull/100624

Based off cpython commit c4c5790120beabed83ce5855f18d209ab8324434

Installation

Requires a sufficiently recent Python 3.12 version (some tests fail with earlier 3.12 versions, although the main functionality might still work - do your own testing).

pip3 install singledispatch-with-type-arg-support

Example

See example.py:

from singledispatch_with_type_arg_support import singledispatch

@singledispatch
def describe(x) -> str:
  raise TypeError(f"no description for {repr(x)}")

@describe.register
def _(x: type[int]) -> str:
  return "the integer type"

print(describe(int))  # should print: the integer type

License

Same as CPython (as 99% of it is copied from there), see LICENSE file.