plum-dispatch 1.7.4

Multiple dispatch in Python

Plum: Multiple Dispatch in Python

Everybody likes multiple dispatch, just like everybody likes plums.

Installation

Plum requires Python 3.7 or higher.

pip install plum-dispatch

Documentation

See here.

What's This?

Plum brings your type annotations to life:

from numbers import Number

from plum import dispatch

@dispatch
def f(x: str):
    return "This is a string!"


@dispatch
def f(x: int):
    return "This is an integer!"


@dispatch
def f(x: Number):
    return "This is a general number, but I don't know which type."

>>> f("1")
'This is a string!'

>>> f(1)
'This is an integer!'

>>> f(1.0)
"This is a number, but I don't know which type."

>>> f(object())
NotFoundLookupError: For function "f", signature Signature(builtins.object) could not be resolved.