Side note: Unless your code only has to support Python 3.9 or newer, you want to avoid using the standard library container types in type hinting, as you can't say anything about what types they must …

Introduced in Python 3.11, typing.Self refers to the type of the current instance, even if that type is a subclass of the class the annotation appears in. So if you have the following code:

Oct 3, 2018 · import enum class Color(enum.Enum): RED = '1' BLUE = '2' GREEN = '3' def get_color_return_something(some_color): pass How do I properly add type annotations to the …

Jun 15, 2016 · How can I specify the type hint of a variable as a function type? There is no typing.Function, and I could not find anything in the relevant PEP, PEP 483.

Sep 12, 2016 · 348 Until Python 3.9 added support for type hinting using standard collections, you had to use typing.Tuple and typing.List if you wanted to document what type the contents of the …

Feb 11, 2020 · 76 PEP 526, which has been implemented in Python 3.6, allows you to annotate variables. The variable used in a with statement can be annotated like this:

May 7, 2016 · 387 Note: typing.Dict has been deprecated as of Python 3.9, because the dict type itself can be used as a generic type directly (together with other standard containers). You can do the …

Feb 2, 2018 · The typing module provides a base class for generic type hints: The typing.Generic class. Subclasses of Generic accept type arguments in square brackets, for example: list_of_ints = …

Nov 28, 2017 · def func(var: list[int]): # do something func([1]) # would be fine func([1, 2]) # would also be fine func([1, 2, 3]) # would also be fine That's consequentially, in a way, because of the type of …

Dec 14, 2015 · ^ Documentation, discussion, and examples floating around for this syntax is nearly non-existent. I only found it in the cpython typing.py file. It states the syntax is available from 3.6+, and it's …