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Python polymorphic function declaration with obvious syntax

Project Description

Python polymorphic function declaration with obvious syntax. Just use the same function name and mark each function definition with @polymorphic decorator.


pip install polypie



from typing import Any, Sequence

from polypie import polymorphic, PolypieException

def example(a: int, b):

def example(a: str, b: Any):

def example(a: Sequence[str]):

example(100, 200)   # (1)
example('foo', 200)   # (2)
example(['foo'])   # (3)
example(('bar', 'baz'))   # (3)
    example({'foo': 'bar'})
except PolypieException as exc:
    print(exc)   # Matching signature <...> not found

class Example:

    def __init__(self):
        self.values = {}

    def value(self, name):
        return self.values[name]

    def value(self, name, value):
        self.values[name] = value

instance = Example()
instance.value('foo', 100)
instance.value('bar', 'baz')
print(instance.value('foo'))   # 100
print(instance.value('bar'))   # baz


  1. Install dependencies: pip install -r requirements_dev.txt
  2. nosetests --with-coverage or tox
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File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
polypie-0.1.3.tar.gz (3.9 kB) Copy SHA256 Checksum SHA256 Source Jun 16, 2016

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