decorateme

Decorate-me

Python decorators to trim boilerplate.

Example 1: auto-add repr, str, hash, and eq

import decorateme as abcd

@abcd.auto_obj()
class Animal:
    def __init__(self, species: str, age: int):
        self.species = species
        self.age = age

luna1 = Animal("dog", 12)
luna2 = Animal("dog", 12)
str(luna)  # "Animal(species="dog", age=12)"
assert luna1 == luna2
assert hash(luna1) == hash(luna2)

Example 2: Customize

import decorateme as abcd

@abcd.auto_str(only=["species"])
class Animal:
    ...

Example 3: Add warnings about code quality

import decorateme as abcd


@abcd._status("immature")
def my_function():
  ...


my_function()  # warns with an ImmatureWarning

Example 4: Iterate, etc.

import decorateme as abcd
@abcd.sequence_over("members")
class Team:
    def __init__(self, members: list):
        self.members = members

team = Team(["john", "kerri"])
list(team)  # ["john", "kerri"]

@abcd.float_type("v")
class Size:
    def __init__(self, v: float):
        self.v = v
      
float(Size(6.2))  # 6.2

Example 5: clearly document behavior

import decorateme as abcd

@abcd.not_thread_safe
def run_command():
    ...

Example 6: combine things

import decorateme as abcd

@abcd.auto_obj()
@abcd.float_type("weight")
class Uno:
    def __init__(self, weight):
        self.weight = weight

light1, light2, heavy = Uno(3.1), Uno(3.1), Uno(12.8)
assert light1 == light2 != heavy
print(light1)  # 'Duo(weight=22.3)'
assert light1 * heavy == 39.68

Licensed under the Apache License, version 2.0. New issues and pull requests are welcome. Please refer to the contributing guide. Generated with Tyrannosaurus.

List of decorators

String-like methods

• auto_repr_str
• auto_str
• auto_repr
• auto_html (for display in Jupyter)
• auto_info (add a .info method)

Equality

• auto_eq
• auto_hash
• total_ordering (from functools)

Make your class smart

• auto_obj (auto- for eq, str, and repr)
• dataclass (from dataclasses)

Docstring-related

• copy_docstring
• append_docstring

Timing

• takes_seconds
• takes_seconds_named
• auto_timeout

Allow a class to be used as a type

• iterable_over
• collection_over
• sequence_over
• float_type
• int_type

Overriding / inheritance

• final
• overrides
• override_recommended
• ABC (from abc)
• ABCMeta (from abc)
• abstractmethod (from abc)

Mark purpose / use

• internal
• external
• reserved

Multithreading

• thread_safe
• not_thread_safe

Mutability

• mutable
• immutable

Code maturity

• status (code deprecation & immaturity warnings)

Singletons

• auto_singleton