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@simonjayhawkins simonjayhawkins added the Typing type annotations, mypy/pyright type checking label Jul 7, 2021

class NumpyBlock(SharedBlock):
values: np.ndarray
# @final # not useful in cython, but we _would_ annotate with @final
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@jbrockmendel i've moved the comment from the cython since the final decorator could be added to the stub so the comment is not relevant.

However, we can't add to the stub as it is overridden in subclass in pandas/core/internals/blocks.py

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sounds like it is inaccurate so should be removed anyway

values: np.ndarray

getitem_block_index = libinternals.NumpyBlock.getitem_block_index
getitem_block_index = final(libinternals.NumpyBlock.getitem_block_index)
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@jbrockmendel why is the override needed? is this a cython class thing.

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IIRC this was to make mypy happy

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the mypy errors are...

pandas/core/internals/blocks.py:1661: error: Definition of "getitem_block_index" in base class "NumpyBlock" is incompatible with definition in base class "Block"  [misc]
pandas/core/internals/blocks.py:1670: error: Definition of "getitem_block_index" in base class "NDArrayBackedBlock" is incompatible with definition in base class "Block"  [misc]
Found 2 errors in 1 file (checked 1299 source files)

they aren't needed. fixed up mypy error by moving remaining Python implementation of getitem_block_index from Block to ExtensionBlock and added @final to stub instead.

Also added @final to Python implementation of getitem_block_index for consistency.

Callable,
final,
)
from pandas._typing import Callable
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this looks iffy. we look at this independently and see if this occurs elsewhere.

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did this get resolved? if so, LGTM

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opened #42498

@jreback jreback added this to the 1.4 milestone Jul 12, 2021
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jreback commented Jul 12, 2021

can you rebase

@jreback jreback merged commit 949592a into pandas-dev:master Jul 14, 2021
@simonjayhawkins simonjayhawkins deleted the typing-38-2 branch July 19, 2021 13:56
feefladder pushed a commit to feefladder/pandas that referenced this pull request Sep 7, 2021
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4 participants