(🎁) Support Python 3.11 #398

KotlinIsland · 2022-10-25T03:25:48Z

Closes #xxxx (Replace xxxx with the Github issue number)
Tests added: Please use assert_type() to assert the type of any return value

bashtage · 2022-10-25T06:26:49Z

Need to wait for lxml to have 3.11 wheels.

KotlinIsland · 2022-10-25T06:31:30Z

Dr-Irv · 2022-10-25T13:06:14Z

I think this won't build because there are no wheels for 3.11 for a lot of the dev dependencies, but it should be valid to publish I think.

pandas doesn't support version 3.11 so I don't think we should be running tests or saying that pandas-stubs supports 3.11 either.

I'm open to being convinced otherwise.

bashtage · 2022-10-25T13:12:52Z

There are 3.11 wheels on PyPu if 1.5.1, so it looks like 3.11 is supported by pandas.

Dr-Irv · 2022-10-25T13:51:55Z

There are 3.11 wheels on PyPu if 1.5.1, so it looks like 3.11 is supported by pandas.

Fair point. We didn't document it, so I created an issue here to fix that: pandas-dev/pandas#49301

CI is failing due to lack of 3.11 version for arrow

breno-jesus-fernandes · 2022-10-26T01:32:42Z

Be careful, looks like we still don't have a stable version for python 3.11 for macos in github actions: https://github.com/actions/python-versions/releases/tag/3.11.0-3320066239

Dr-Irv · 2022-10-26T02:09:33Z

CI is failing because no stable version of python 3.11 for MacOS yet and no pyarrow for python 3.11

Dr-Irv · 2022-10-26T15:31:41Z

Issue is still that pyarrow doesn't work with python 3.11. The CI sees no binary, then tries to build the wheel, and it fails.

There might be a workaround here to skip the requirement of pyarrow when testing on 3.11 (and then to adjust the tests accordingly to do a pytest.skip) but I don't know how to modify pyproject.toml to do that.

@BrenoJesusFernandes Any ideas on how to make the poetry requirement for pyarrow conditional on python <= 3.10 in pyproject.toml ?

Dr-Irv · 2022-10-26T16:07:19Z

spoke with someone who is familiar with pyarrow, and they think 3.11 wheels will be available within a week, so maybe easiest to wait for that

breno-jesus-fernandes · 2022-10-26T19:55:48Z

I don't get why pandas is available in python 3.11, when one requirement is not available. It's seems wrong for me. In poetry last versio, you can define multiples dependencies besides the dev-dependecies, but I think we should wait the dependecies to be available in 3.11.

Dr-Irv · 2022-10-26T20:00:34Z

I don't get why pandas is available in python 3.11, when one requirement is not available. It's seems wrong for me. In poetry last versio, you can define multiples dependencies besides the dev-dependecies, but I think we should wait the dependecies to be available in 3.11.

pyarrow is an optional dependency. So that's why pandas is available for python 3.11, because you can use pandas with python 3.11, you just can't use pyarrow with it.

So if there is a way to define the dependencies as one set for python <= 3.10 that we have now, and another set that is the same, except removes pyarrow for python 3.11, we can move forward. Then we modify the tests that use pyarrow to test if pyarrow is available. That's how the tests for pandas with python 3.11 are set up.

Or we wait a week (hopefully) until pyarrow builds wheels for python 3.11

breno-jesus-fernandes · 2022-10-26T20:10:35Z

is there some test using pyarrow? if exits tests like that it is gonna fail in CI.

Dr-Irv · 2022-10-26T20:17:55Z

is there some test using pyarrow? if exits tests like that it is gonna fail in CI.

There are a couple of tests in test_pandas.py and test_frame.py. They are protected with a pytest.importorskip .

So we just need to modify the pyproject.toml file to indicate that pyarrow should not be installed when testing python 3.11. Then the tests should work.

breno-jesus-fernandes · 2022-10-26T20:23:13Z

hmm I see, so it's simple than I thought, just add something like that:

[tool.poetry.dev-dependencies]
pyarrow = { version = "currently-version", python = "<3.11" }
]

Dr-Irv · 2022-10-26T20:29:55Z

@KotlinIsland if you want to try what @BrenoJesusFernandes suggests above, that might make the CI work.

bellini666 · 2022-10-27T20:45:56Z

Since this is a stubs package, does it make sense to limit the upper bound of the python version? I would say that even libs shouldn't do that themselves, unless there's a very good reason.

This is very limiting for people using poetry for example due to this issue

Dr-Irv · 2022-10-27T20:51:31Z

Since this is a stubs package, does it make sense to limit the upper bound of the python version? I would say that even libs shouldn't do that themselves, unless there's a very good reason.

The limit is there for now because we can't run a successful test with python 3.11. We're not willing to release the stubs for a python version unless we can successfully test the stubs on that version.

In the past, we have had issues with the stubs being compatible with one version of python, but not another. So our tests help make sure we are not making that mistake.

KotlinIsland · 2022-10-30T09:49:48Z

Looks like tables and lxml don't have 3.11 wheels either.

KotlinIsland · 2022-10-30T10:31:01Z

@Dr-Irv Okay, I have made arrow, tables and lxml conditional dependencies, and I have added a skip check for 3.11

We aren't using these dependencies directly, so I'm not quite sure why they are even specified in the dependencies, perhaps as a constraint? If not I think they should be removed.

Dr-Irv

So the tests revealed another issue, which is that we'd have to use mypy 0.982 to get python 3.11 support. But we have to wait for mypy to fix an issue that causes mypy to not accept our stubs. See #336 and the discussion therein.

Based on this comment: python/mypy#13781 (comment) we have to wait for version 0.990, which hopefully will be released soon.

Dr-Irv · 2022-10-31T14:04:30Z

tests/test_io.py

@@ -69,6 +70,10 @@
 CWD = os.path.split(os.path.abspath(__file__))[0]


+if sys.version_info >= (3, 11):
+ # This is only needed temporarily due to no wheels being available for arrow on 3.11
+ _arrow = pytest.importorskip("arrow")


We don't have any arrow tests in test_io.py, so I don't think this is necessary here.

Strange, it made the tests pass. Hmm perhaps for the wrong reason

FAILED tests/test_io.py::test_orc - ImportError: Missing optional dependency 'pyarrow'. Use pip or conda to install pyarrow. FAILED tests/test_io.py::test_orc_path - ImportError: Missing optional dependency 'pyarrow'. Use pip or conda to install pyarrow. FAILED tests/test_io.py::test_orc_buffer - ImportError: Missing optional dependency 'pyarrow'. Use pip or conda to install pyarrow. FAILED tests/test_io.py::test_orc_columns - ImportError: Missing optional dependency 'pyarrow'. Use pip or conda to install pyarrow. FAILED tests/test_io.py::test_orc_bytes - ImportError: Missing optional dependency 'pyarrow'. Use pip or conda to install pyarrow. FAILED tests/test_io.py::test_xml - ImportError: lxml not found, please install or use the etree parser. FAILED tests/test_io.py::test_xml_str - ImportError: lxml not found, please install or use the etree parser. FAILED tests/test_io.py::test_hdf - ImportError: Missing optional dependency 'pytables'. Use pip or conda to install pytables. FAILED tests/test_io.py::test_hdfstore - ImportError: Missing optional dependency 'pytables'. Use pip or conda to install pytables. FAILED tests/test_io.py::test_read_hdf_iterator - ImportError: Missing optional dependency 'pytables'. Use pip or conda to install pytables. FAILED tests/test_io.py::test_hdf_context_manager - ImportError: Missing optional dependency 'pytables'. Use pip or conda to install pytables. FAILED tests/test_io.py::test_hdf_series - ImportError: Missing optional dependency 'pytables'. Use pip or conda to install pytables. FAILED tests/test_io.py::test_parquet - ImportError: Unable to find a usable engine; tried using: 'pyarrow', 'fastparquet'. FAILED tests/test_io.py::test_parquet_options - ImportError: Unable to find a usable engine; tried using: 'pyarrow', 'fastparquet'. FAILED tests/test_io.py::test_feather - ImportError: Missing optional dependency 'pyarrow'. Use pip or conda to install pyarrow. FAILED tests/test_io.py::test_read_html - ImportError: lxml not found, please install it

This is the output of pytest, it seems to me as if test_io is in some way using pyarrow?

This is the output of pytest, it seems to me as if test_io is in some way using pyarrow?

I'm guessing there are dependencies. So test_orc pattern needs pyarrow, test_xml pattern needs lxml, test_hdf pattern needs pytables, etc. So we should do the skips based on the particular test (and underlying library) being done.

Hows that look?

KotlinIsland · 2022-11-02T00:18:09Z

Looks like there is some issues with mypy: python/mypy#13627

This is causing the ci to fail for 3.11 and will require updating mypy to 0.982

I've created a separate PR to handle this here #406

Dr-Irv · 2022-11-02T03:14:09Z

@KotlinIsland Please see #398 (review)

We have to wait for mypy 0.990

Dr-Irv · 2022-11-08T21:36:21Z

@KotlinIsland Please see #398 (review)

We have to wait for mypy 0.990

@KotlinIsland We are now testing with mypy 0.990 via #419 so can you merge with that, resolve conflicts, and see if the python 3.11 support will work?

KotlinIsland · 2022-11-10T04:05:34Z

@Dr-Irv Can you trigger the CI?

Dr-Irv · 2022-11-10T15:30:15Z

Currently two issues (but there might be more):
In test_pandas.py, have to use a pattern like this:

import pandas.util._test_decorators as td  # at top of file somewhere

pyarrow_skip = td.skip_if_no("pyarrow")


@pyarrow_skip
def test_arrow_dtype() -> None:
    import pyarrow as pa

    check( ...

and in pandas-stubs/core/arrays/arrow/dtype.pyi (somewhere near the top):

if sys.version_info < (3, 11):
    import pyarrow as pa
else:
    pa = Any

You may also need to put double quotes around each reference to pa.DataType in that file.

I'd also suggest setting up a local environment with python 3.11 and running the tests locally instead of waiting for me or someone else to do a CI approval.

Dr-Irv · 2022-11-11T15:58:44Z

I played around a bit with this, and uncovered a pyright bug that doesn't ignore imports based on the python version test. microsoft/pyright#4182

So we have to wait for that to get fixed to be able to do conditional imports.

Dr-Irv · 2022-11-15T21:04:36Z

tests/test_pandas.py

 )

+pyarrow_skip = pytest.mark.skip


Shouldn't this be

pyarrow_skip = pytest.mark.skipif(sys.version_info >= (3, 11), "pyarrow is not available for 3.11 yet") """This is only needed temporarily due to no wheels being available for arrow on 3.11"""

Dr-Irv · 2022-11-15T21:08:56Z

tests/test_pandas.py

 from tests import (
 TYPE_CHECKING_INVALID_USAGE,
 check,
+ importskip


this import is failing.

bashtage

Some fixes needed.

bashtage · 2022-11-15T21:35:39Z

tests/test_io.py

+arrow_skip = pytest.mark.skipif(sys.version_info >= (3, 11), "pyarrow is not available for 3.11 yet")
+"""This is only needed temporarily due to no wheels being available for arrow on 3.11"""
+
+lxml_skip = pytest.mark.skipif(sys.version_info >= (3, 11), "pyarrow is not available for 3.11 yet")


Wrong reason in the explanation here. Should be lxml not arrow.

bashtage · 2022-11-15T21:37:14Z

tests/test_pandas.py

 def test_arrow_dtype() -> None:
- pytest.importorskip("pyarrow")


These is there for a reason to protect Windows. I think it should stay.

bashtage · 2022-11-15T21:37:34Z

tests/test_pandas.py

 )

+pyarrow_skip = pytest.mark.skip


Appears to be not needed.

Dr-Irv · 2022-11-20T04:47:57Z

I created #435 to move this along. Took some of your ideas from here. Had to handle an issue with pandas that's a bit thorny and want to see if I can coordinate release of this with release of pandas 1.5.2 if a PR there is included.

Thanks for working on this. It was a great head start.

KotlinIsland changed the title ~~Support Python 3.11~~ (🎁) Support Python 3.11 Oct 25, 2022

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Python 3.11 support #400

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Support Python 3.11

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Python 3.11 support #435

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Dr-Irv closed this Nov 20, 2022

		def test_arrow_dtype() -> None:
		pytest.importorskip("pyarrow")

(🎁) Support Python 3.11 #398

(🎁) Support Python 3.11 #398

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