| Name | typing-utilities JSON |
| Version |
0.0.4
JSON |
| download |
| home_page | None |
| Summary | Runtime reflection and validation of types and generics. |
| upload_time | 2025-07-11 08:53:54 |
| maintainer | None |
| docs_url | None |
| author | None |
| requires_python | >=3.10 |
| license | None |
| keywords |
windows
linux
generics
typing
|
| VCS |
 |
| bugtrack_url |
|
| requirements |
No requirements were recorded.
|
| Travis-CI |
No Travis.
|
| coveralls test coverage |
|
[](https://github.com/apmadsen/typing-utilities/actions/workflows/python-test.yml)
[](https://github.com/apmadsen/typing-utilities/actions/workflows/python-test-coverage.yml)
[](https://github.com/apmadsen/typing-utilities/releases)
[](https://pepy.tech/projects/typing-utilities)
# typing-utilities: Runtime reflection and validation of types and generics.
typing-utilities extends Python with the ability to check instances and types of generic types and unions introduced in the `typing` module.
Following is a small example of two of the most usable functions `issubclass_typing` and `isinstance_typing`, but a lot more is to be found in the API section further down...
## Example:
```python
from typing import Generic, TypeVar
from typingutils import issubclass_typing, isinstance_typing
T = TypeVar('T')
class Class1(Generic[T]):
pass
class_type1 = Class1[str]
class_type2 = Class1[int]
issubclass_typing(class_type1, class_type2) # => False
# next line will fail
issubclass(class_type1, class_type2) # => TypeErrorr: Subscripted generics cannot be used with class and instance checks
class_inst1 = class_type1()
class_inst2 = class_type2()
isinstance_typing(class_inst1, class_type1) # => True
isinstance_typing(class_inst1, class_type2) # => False
isinstance_typing(class_inst2, class_type2) # => True
isinstance_typing(class_inst2, class_type1) # => False
# next line will fail
isinstance(class_inst1, class_type1) # => TypeError: Subscripted generics cannot be used with class and instance checks
```
## Conventions
This project differs from Python and other projects in some aspects:
- Generic subscripted types like `list[str]` are always a subclass of its base type `list` whereas the opposite is not true.
- Any type is a subclass of `type[Any]`.
- `type[Any]` is not an instance of `type[Any]`.
- Builtin types and `typing` types are interchangeable, i.e. `list[T]` is interchangeable with `typing.List[T]` etc.
## What's not included
### Generic types
It's not the goal of this project to deliver generic types such as generically enforced lists and dicts.
## Full documentation
[Go to documentation](https://github.com/apmadsen/typing-utilities/blob/main/docs/documentation.md)
## Other similar projects
There are other similar projects out there like [typing-utils](https://pypi.org/project/typing-utils/) and [runtype](https://pypi.org/project/runtype/), and while typing-utils is outdated and pretty basic, runtype is very similar to `typing-utilities` when it comes to validation.
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