TypedDict using keywords causes "error: Too many arguments for TypedDict()"

[lillekemiker]

Bug Report

In the typing docs for TypedDict there is an example of defining a TypedDict using keywords mapped to types

Point2D = TypedDict('Point2D', x=int, y=int, label=str)

When running mypy on this exact example, I get the following error:

type_test.py:4: error: Too many arguments for TypedDict()

If using the alternative definition with a positional dictionary, no error.

Point2D = TypedDict('Point2D', {'x': int, 'y': int, 'label': str})

Link to docs:
https://docs.python.org/3/library/typing.html#typing.TypedDict

To Reproduce

1. Create a file with the above code example and necessary imports
2. Run mypy on file
3. Observe error message

Expected Behavior

No error

Actual Behavior

Error.

Your Environment

• Mypy version used: 0.812 and 0.910 tested
• Mypy command-line flags: none
• Mypy configuration options from mypy.ini (and other config files): ignore_missing_imports=true
• Python version used: 3.9.2
• Operating system and version: macOS 11.6

[sobolevn]

Related #11206

I can work on it after #11206 will be finished. There would be a lot of similar constructs.

[97littleleaf11]

I opened an issue about this. https://bugs.python.org/issue46066.
I think this syntax is confusing since we have the total keyword.

[97littleleaf11]

#2492 (comment):

This doesn't seem feasible now that we have the total= keyword argument to TypedDict. Also, TypedDict is officially supported in Python and we want to avoid mypy-specific extensions.