问题
Just checking to see if anybody listening has already generated a sort-of-working set of mypy/typeshed stubs for Pandas. I naively ran stubgen over the local Pandas install which generated some errors. I can go with what I have to start with, but was hoping someone else had pushed the ball further. (Nothing obvious turned up on GitHub, though there is an old ticket for stubs.)
回答1:
I have not yet found stubs for pandas, however someone has created some for NumPy: https://github.com/machinalis/mypy-data/tree/master/numpy-mypy
One interim option could be to define a custom type according to how mypy sees pandas objects. When I wrap a DataFrame object in reveal_type(df) and run mypy, it reveals that the recognized type signature is Union[builtins.dict[Union[builtins.str, builtins.int], builtins.dict[Any, Any]], Any]. However it shows the same for a Series object, so it's not very accurate.
回答2:
As of June 2020, pandas doesn't have stubs yet, but there are some progress in that way ( see https://github.com/pandas-dev/pandas/issues/14468 ). By now, you can use the data-science-types package (on github) which provides stub files for pandas, numpy and matpltlib, though it's also a work in progress.
来源：https://stackoverflow.com/questions/41105819/mypy-typeshed-stubs-for-pandas