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copy_on_model_validation config doesn't copy List field anymore in v1.9.0 #3641

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NunchakusLei opened this issue Jan 8, 2022 · 2 comments · Fixed by #3642
Closed
3 tasks done

copy_on_model_validation config doesn't copy List field anymore in v1.9.0 #3641

NunchakusLei opened this issue Jan 8, 2022 · 2 comments · Fixed by #3642
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bug V1 Bug related to Pydantic V1.X
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@NunchakusLei
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  • I added a descriptive title to this issue
  • I have searched (google, github) for similar issues and couldn't find anything
  • I have read and followed the docs and still think this is a bug

Bug

The output of python -c "import pydantic.utils; print(pydantic.utils.version_info())" when I use v1.9.0a1,

             pydantic version: 1.9.0a1
            pydantic compiled: True
                 install path: <*my-project-dir*>/venv/lib/python3.9/site-packages/pydantic
               python version: 3.9.9 (main, Nov 16 2021, 03:05:18)  [GCC 7.5.0]
                     platform: Linux-5.4.0-91-generic-x86_64-with-glibc2.27
     optional deps. installed: ['typing-extensions']

The output of python -c "import pydantic.utils; print(pydantic.utils.version_info())" when I use v1.9.0,

             pydantic version: 1.9.0
            pydantic compiled: True
                 install path: <*my-project-dir*>/venv/lib/python3.9/site-packages/pydantic
               python version: 3.9.9 (main, Nov 16 2021, 03:05:18)  [GCC 7.5.0]
                     platform: Linux-5.4.0-91-generic-x86_64-with-glibc2.27
     optional deps. installed: ['typing-extensions']

Looks like there is accidental behaviour change from v1.9.0a1 to v1.9.0 regarding the copy_on_model_validation config.

from pydantic import BaseModel
from typing import List


class A(BaseModel):
    name: str
    
    class Config:
        copy_on_model_validation = True  # Default behaviour
        

class B(BaseModel):
    list_a: List[A]


a = A(name="a")
b = B(list_a=[a])

print(a)
print(b)
a.name = "b"  # make a change to variable a's field
print(a)
print(b)

The output using v1.9.0a1,

A(name='a')
B(list_a=[A(name='a')])
A(name='b')
B(list_a=[A(name='a')])

The output using v1.9.0 changed to,

A(name='a')
B(list_a=[A(name='a')])
A(name='b')
B(list_a=[A(name='b')])
@NunchakusLei NunchakusLei added the bug V1 Bug related to Pydantic V1.X label Jan 8, 2022
@NunchakusLei NunchakusLei changed the title copy_on_model_validation config doesn't copy List field anymore copy_on_model_validation config doesn't copy List field anymore in v1.9.0 Jan 8, 2022
PrettyWood added a commit to PrettyWood/pydantic that referenced this issue Jan 9, 2022
@samuelcolvin samuelcolvin added this to the v1.9.1 milestone Apr 2, 2022
samuelcolvin added a commit that referenced this issue May 11, 2022
…llow one (#3642)

* fix: `Config.copy_on_model_validation` does a deep copy and not a shallow one

closes #3641

* fix: typo

* use python 3.10 to run fastapi tests

* fix fastapi test call

Co-authored-by: Samuel Colvin <s@muelcolvin.com>
aleksul pushed a commit to aleksul/pydantic that referenced this issue May 13, 2022
source /home/aleksul/projects/pydantic/venv/bin/activatebuild(deps): bump actions/setup-python from 2 to 3
(pydantic#3868)

Bumps [actions/setup-python](https://github.com/actions/setup-python) from 2 to 3.
- [Release notes](https://github.com/actions/setup-python/releases)
- [Commits](actions/setup-python@v2...v3)

---
updated-dependencies:
- dependency-name: actions/setup-python
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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build(deps): bump actions/checkout from 2 to 3 (pydantic#3869)

Bumps [actions/checkout](https://github.com/actions/checkout) from 2 to 3.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v2...v3)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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build(deps): bump mkdocs-material from 8.1.3 to 8.2.3 (pydantic#3865)

Bumps [mkdocs-material](https://github.com/squidfunk/mkdocs-material) from 8.1.3 to 8.2.3.
- [Release notes](https://github.com/squidfunk/mkdocs-material/releases)
- [Changelog](https://github.com/squidfunk/mkdocs-material/blob/master/CHANGELOG)
- [Commits](squidfunk/mkdocs-material@8.1.3...8.2.3)

---
updated-dependencies:
- dependency-name: mkdocs-material
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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build(deps): bump coverage from 6.2 to 6.3.2 (pydantic#3839)

Bumps [coverage](https://github.com/nedbat/coveragepy) from 6.2 to 6.3.2.
- [Release notes](https://github.com/nedbat/coveragepy/releases)
- [Changelog](https://github.com/nedbat/coveragepy/blob/master/CHANGES.rst)
- [Commits](nedbat/coveragepy@6.2...6.3.2)

---
updated-dependencies:
- dependency-name: coverage
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Fixed a typo in decimal_encoder's doc. (pydantic#3820)

build(deps): bump pre-commit from 2.16.0 to 2.17.0 (pydantic#3731)

Bumps [pre-commit](https://github.com/pre-commit/pre-commit) from 2.16.0 to 2.17.0.
- [Release notes](https://github.com/pre-commit/pre-commit/releases)
- [Changelog](https://github.com/pre-commit/pre-commit/blob/master/CHANGELOG.md)
- [Commits](pre-commit/pre-commit@v2.16.0...v2.17.0)

---
updated-dependencies:
- dependency-name: pre-commit
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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build(deps): bump mypy from 0.930 to 0.931 (pydantic#3656)

Bumps [mypy](https://github.com/python/mypy) from 0.930 to 0.931.
- [Release notes](https://github.com/python/mypy/releases)
- [Commits](python/mypy@v0.930...v0.931)

---
updated-dependencies:
- dependency-name: mypy
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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docs: fix typo in settings management page (pydantic#3781)

build(deps): bump black from 21.12b0 to 22.3.0 (pydantic#3950)

* build(deps): bump black from 21.12b0 to 22.3.0

Bumps [black](https://github.com/psf/black) from 21.12b0 to 22.3.0.
- [Release notes](https://github.com/psf/black/releases)
- [Changelog](https://github.com/psf/black/blob/main/CHANGES.md)
- [Commits](https://github.com/psf/black/commits/22.3.0)

---
updated-dependencies:
- dependency-name: black
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

* apply new black styles, fix docs

* try upgrading pip before fastapi tests

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Samuel Colvin <s@muelcolvin.com>

build(deps): bump python-dotenv from 0.19.2 to 0.20.0 (pydantic#3963)

Bumps [python-dotenv](https://github.com/theskumar/python-dotenv) from 0.19.2 to 0.20.0.
- [Release notes](https://github.com/theskumar/python-dotenv/releases)
- [Changelog](https://github.com/theskumar/python-dotenv/blob/master/CHANGELOG.md)
- [Commits](theskumar/python-dotenv@v0.19.2...v0.20.0)

---
updated-dependencies:
- dependency-name: python-dotenv
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

build(deps): bump hypothesis from 6.31.6 to 6.41.0 (pydantic#3964)

Bumps [hypothesis](https://github.com/HypothesisWorks/hypothesis) from 6.31.6 to 6.41.0.
- [Release notes](https://github.com/HypothesisWorks/hypothesis/releases)
- [Commits](HypothesisWorks/hypothesis@hypothesis-python-6.31.6...hypothesis-python-6.41.0)

---
updated-dependencies:
- dependency-name: hypothesis
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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build(deps): bump pytest from 6.2.5 to 7.1.1 (pydantic#3926)

Bumps [pytest](https://github.com/pytest-dev/pytest) from 6.2.5 to 7.1.1.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@6.2.5...7.1.1)

---
updated-dependencies:
- dependency-name: pytest
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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build(deps): bump twine from 3.7.1 to 4.0.0 (pydantic#3965)

Bumps [twine](https://github.com/pypa/twine) from 3.7.1 to 4.0.0.
- [Release notes](https://github.com/pypa/twine/releases)
- [Changelog](https://github.com/pypa/twine/blob/main/docs/changelog.rst)
- [Commits](pypa/twine@3.7.1...4.0.0)

---
updated-dependencies:
- dependency-name: twine
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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build(deps): bump cython from 0.29.26 to 0.29.28 (pydantic#3871)

Bumps [cython](https://github.com/cython/cython) from 0.29.26 to 0.29.28.
- [Release notes](https://github.com/cython/cython/releases)
- [Changelog](https://github.com/cython/cython/blob/master/CHANGES.rst)
- [Commits](cython/cython@0.29.26...0.29.28)

---
updated-dependencies:
- dependency-name: cython
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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build(deps): bump typing-extensions from 4.0.1 to 4.1.1 (pydantic#3874)

Bumps [typing-extensions](https://github.com/python/typing) from 4.0.1 to 4.1.1.
- [Release notes](https://github.com/python/typing/releases)
- [Changelog](https://github.com/python/typing/blob/master/typing_extensions/CHANGELOG)
- [Commits](python/typing@4.0.1...4.1.1)

---
updated-dependencies:
- dependency-name: typing-extensions
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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build(deps): bump pytest-mock from 3.6.1 to 3.7.0 (pydantic#3967)

Bumps [pytest-mock](https://github.com/pytest-dev/pytest-mock) from 3.6.1 to 3.7.0.
- [Release notes](https://github.com/pytest-dev/pytest-mock/releases)
- [Changelog](https://github.com/pytest-dev/pytest-mock/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest-mock@v3.6.1...v3.7.0)

---
updated-dependencies:
- dependency-name: pytest-mock
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Combine dependabot prs (pydantic#3969)

* allow combining of dependabot PRs

* add combine-dependabot.yml

CentOS 7: `read_text(encoding='utf-8')` (pydantic#3625)

With CentOS 7 Python 3.6, running install from source with pip failed:

    sudo podman run -ti --rm centos:7
    yum -y update
    yum -y install epel-release
    yum -y install git python3 python3-devel python3-pip python3-setuptools python3-wheel
    git clone https://github.com/samuelcolvin/pydantic.git
    cd pydantic
    pip3 install .

With following error message:

    [root@c99d0585636c pydantic]# pip3 install .
    Processing /pydantic
        Complete output from command python setup.py egg_info:
        Traceback (most recent call last):
          File "<string>", line 1, in <module>
          File "/tmp/pip-91v_ixvz-build/setup.py", line 62, in <module>
            history = (THIS_DIR / 'HISTORY.md').read_text()
          File "/usr/lib64/python3.6/pathlib.py", line 1197, in read_text
            return f.read()
          File "/usr/lib64/python3.6/encodings/ascii.py", line 26, in decode
            return codecs.ascii_decode(input, self.errors)[0]
        UnicodeDecodeError: 'ascii' codec can't decode byte 0xe2 in position 14648: ordinal not in range(128)

        ----------------------------------------
    Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-91v_ixvz-build/

This PR add the required `read_text(encoding='utf-8')` for `setup.py`.

Signed-off-by: Wong Hoi Sing Edison <hswong3i@pantarei-design.com>

fix: clarify that discriminated unions do not support singletons (pydantic#3639)

Add Robusta.dev to list of Pydantic users (pydantic#3715)

* add robusta.dev to pydantic users

* update robusta.dev description and fix typo

Prevent subclasses of bytes being converted to bytes (pydantic#3707)

* adding a test

* fix and add change description

build(deps): bump mypy from 0.931 to 0.942 (pydantic#3968)

* build(deps): bump mypy from 0.931 to 0.942

Bumps [mypy](https://github.com/python/mypy) from 0.931 to 0.942.
- [Release notes](https://github.com/python/mypy/releases)
- [Commits](python/mypy@v0.931...v0.942)

---
updated-dependencies:
- dependency-name: mypy
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

* build(deps): bump mypy from 0.931 to 0.942

Bumps [mypy](https://github.com/python/mypy) from 0.931 to 0.942.
- [Release notes](https://github.com/python/mypy/releases)
- [Commits](python/mypy@v0.931...v0.942)

---
updated-dependencies:
- dependency-name: mypy
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

* fix mypy

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Samuel Colvin <s@muelcolvin.com>

Fix pytest crashes with hypothesis and pydantic (pydantic#3727)

Pytest (sometimes?) crashes when it is invoked with `-vv` and pydantic and hypthesis are installed.

This is because `_registered(typ)` modifies `_DEFINED_TYPES` while it is being iterated:

```
INTERNALERROR>   File ".../lib/python3.9/site-packages/pydantic/_hypothesis_plugin.py", line 361, in <module>
INTERNALERROR>     for typ in pydantic.types._DEFINED_TYPES:
INTERNALERROR>   File ".../lib/python3.9/_weakrefset.py", line 65, in __iter__
INTERNALERROR>     for itemref in self.data:
INTERNALERROR> RuntimeError: Set changed size during iteration
```

Remove incorrect comment about lazy evaluation of setting sources (pydantic#3806)

* Remove incorrect comment about lazy evaluation of setting sources

It looks like the current implementation always evaluates every source (https://github.com/samuelcolvin/pydantic/blob/9d631a3429a66f30742c1a52c94ac18ec6ba848d/pydantic/env_settings.py#L73) before coalescing them into a single dictionary to pass to `BaseModel`. So the comment about lazy evaluation is incorrect and should be removed.

* Add changelog

[no ci] correct name of change file

Remove benchmarks completely (pydantic#3973)

* removing benchmarks completely

* [no ci] add change

fix: `Config.copy_on_model_validation` does a deep copy and not a shallow one (pydantic#3642)

* fix: `Config.copy_on_model_validation` does a deep copy and not a shallow one

closes pydantic#3641

* fix: typo

* use python 3.10 to run fastapi tests

* fix fastapi test call

Co-authored-by: Samuel Colvin <s@muelcolvin.com>

build(deps): bump typing-extensions from 4.1.1 to 4.2.0 (pydantic#4040)

Bumps [typing-extensions](https://github.com/python/typing) from 4.1.1 to 4.2.0.
- [Release notes](https://github.com/python/typing/releases)
- [Changelog](https://github.com/python/typing/blob/master/typing_extensions/CHANGELOG.md)
- [Commits](python/typing@4.1.1...4.2.0)

---
updated-dependencies:
- dependency-name: typing-extensions
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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build(deps): bump mkdocs-material from 8.2.8 to 8.2.12 (pydantic#4038)

Bumps [mkdocs-material](https://github.com/squidfunk/mkdocs-material) from 8.2.8 to 8.2.12.
- [Release notes](https://github.com/squidfunk/mkdocs-material/releases)
- [Changelog](https://github.com/squidfunk/mkdocs-material/blob/master/CHANGELOG)
- [Commits](squidfunk/mkdocs-material@8.2.8...8.2.12)

---
updated-dependencies:
- dependency-name: mkdocs-material
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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build(deps): bump pytest from 7.1.1 to 7.1.2 (pydantic#4037)

Bumps [pytest](https://github.com/pytest-dev/pytest) from 7.1.1 to 7.1.2.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@7.1.1...7.1.2)

---
updated-dependencies:
- dependency-name: pytest
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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build(deps): bump actions/upload-artifact from 2 to 3 (pydantic#4035)

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 2 to 3.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v2...v3)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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build(deps): bump actions/download-artifact from 2 to 3 (pydantic#4034)

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 2 to 3.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v2...v3)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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build(deps): bump email-validator from 1.1.3 to 1.2.1 (pydantic#4060)

Bumps [email-validator](https://github.com/JoshData/python-email-validator) from 1.1.3 to 1.2.1.
- [Release notes](https://github.com/JoshData/python-email-validator/releases)
- [Commits](JoshData/python-email-validator@v1.1.3...v1.2.1)

---
updated-dependencies:
- dependency-name: email-validator
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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build(deps): bump hypothesis from 6.41.0 to 6.46.3 (pydantic#4059)

Bumps [hypothesis](https://github.com/HypothesisWorks/hypothesis) from 6.41.0 to 6.46.3.
- [Release notes](https://github.com/HypothesisWorks/hypothesis/releases)
- [Commits](HypothesisWorks/hypothesis@hypothesis-python-6.41.0...hypothesis-python-6.46.3)

---
updated-dependencies:
- dependency-name: hypothesis
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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build(deps): bump pre-commit from 2.17.0 to 2.19.0 (pydantic#4061)

Bumps [pre-commit](https://github.com/pre-commit/pre-commit) from 2.17.0 to 2.19.0.
- [Release notes](https://github.com/pre-commit/pre-commit/releases)
- [Changelog](https://github.com/pre-commit/pre-commit/blob/main/CHANGELOG.md)
- [Commits](pre-commit/pre-commit@v2.17.0...v2.19.0)

---
updated-dependencies:
- dependency-name: pre-commit
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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test pyright with pydantic (pydantic#3972)

* test pyright with pydantic

* rename file to avoid pytest running it

* try another name 😴

* add docs about BaseSettings and Field

* add change

Fix regression in handling of nested dataclasses in `get_flat_models_from_field` (pydantic#3819)

* add test for nested python dataclass schema generation

* fix handling of dataclasses in `get_flat_models_from_field`

* add change note

Fix issue with self-referencing dataclass (pydantic#3713)

* Fix issue with self-referencing dataclass

* Fix mypy issue

guard against ClassVar in fields (pydantic#4064)

* guard against ClassVar in fields, fix pydantic#3679

* fix linting

* skipif for test_class_var_forward_ref

Fix issue with in-place modification of FieldInfo (pydantic#4067)

* Fix info with in-place modification of field info

* add changes

* add test for 3714

* Update changes/4067-adriangb.md

Co-authored-by: Samuel Colvin <samcolvin@gmail.com>

Co-authored-by: Samuel Colvin <samcolvin@gmail.com>

build(deps): bump mkdocs-material from 8.2.8 to 8.2.14 (pydantic#4063)

Bumps [mkdocs-material](https://github.com/squidfunk/mkdocs-material) from 8.2.8 to 8.2.14.
- [Release notes](https://github.com/squidfunk/mkdocs-material/releases)
- [Changelog](https://github.com/squidfunk/mkdocs-material/blob/master/CHANGELOG)
- [Commits](squidfunk/mkdocs-material@8.2.8...8.2.14)

---
updated-dependencies:
- dependency-name: mkdocs-material
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
samuelcolvin added a commit that referenced this issue May 14, 2022
…llow one (#3642)

* fix: `Config.copy_on_model_validation` does a deep copy and not a shallow one

closes #3641

* fix: typo

* use python 3.10 to run fastapi tests

* fix fastapi test call

Co-authored-by: Samuel Colvin <s@muelcolvin.com>
ntaylorwss pushed a commit to nicejobinc/pydantic that referenced this issue Jun 24, 2022
…llow one (pydantic#3642)

* fix: `Config.copy_on_model_validation` does a deep copy and not a shallow one

closes pydantic#3641

* fix: typo

* use python 3.10 to run fastapi tests

* fix fastapi test call

Co-authored-by: Samuel Colvin <s@muelcolvin.com>
@NunchakusLei
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NunchakusLei commented Aug 19, 2022

This issue happens again in the latest version 1.9.2.

@timkpaine
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#4093 (comment)

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