tippo 0.1.0

Cleaner and forwards compatible way to use typing features

Overview

Tippo provides a cleaner and forwards compatible way to use features from the typing and typing_extension modules on python 3.7+.

Example

Instead of using an ugly try block for forwards compatibility…

>>> try:
...     from typing import Annotated
... except ImportError:
...     from typing_extensions import Annotated
...
>>> try:
...     from typing import final
... except ImportError:
...     from typing_extensions import final
...

…just import directly from tippo!

>>> from tippo import Annotated, final

Generic Weak Structures

Tippo also implements generic versions of weak data structures that work with older python versions’ type annotations (3.7) without the need to defer their evaluation:

>>> from tippo import Any, ReferenceType, WeakSet, WeakKeyDictionary, WeakValueDictionary
>>> class X:
...     pass
>>> weak_ref: ReferenceType[X]
>>> weak_set: WeakSet[X]
>>> weak_key_dict: WeakKeyDictionary[X, Any]
>>> weak_value_dict: WeakValueDictionary[Any, X]