Flake8 plugin to enforce the new Union and Optional annotation syntax defined in PEP 604
Project description
flake8-new-union-types
Flake8 plugin to enforce the new Union
and Optional
annotation syntax defined in PEP 604.
Union[X, Y] = X | Y
Optional[X] = X | None
Note that it's impossible to use forward references in the new syntax, like this:
"X" | int
such a case can be expressed as a string containing both union terms:
"X | int"
Installation
pip install flake8-new-union-types
or if you use poetry:
poetry add --dev flake8-new-union-types
Usage
Error list
- NU001 Use
Foo | Bar
syntax instead of Union (PEP 604) - NU002 Use
Foo | None
syntax instead of Optional (PEP 604) - NU003 Present the whole expression as a string to annotate forward refs, e.g.
"int | Foo"
(PEP 604)
Configuration
There is no way to configure the plugin at the moment.
Project details
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