第二次运行 pytest 出错：_tkinter.TclError: Can't find a usable init.tcl in the following directories:

[Snoopy1866]

Version

Latest development version

Platform

Windows 11

What Happened

第一次运行 pytest 都通过测试。
第二次运行 pytest 出现部分测试失败。

已经尝试过：

• 重建 .venv 环境
• 切换到 python 3.12.7
• 在非虚拟环境中执行 pytest
• 重装 python 3.12.7 到 D 盘，防止产生权限问题
• 设置环境变量 TCL_LIBRARY = D:/Python/Python312/tcl/tcl8.6
• 在系统自带命令提示符窗口而不是 vscode 默认终端中执行 pytest

Relevant Log Output

PS C:\Users\17531\Documents\GitHub\Snoopy1866\tkintertools> pytest
======================================================================================================== test session starts =========================================================================================================
platform win32 -- Python 3.12.7, pytest-8.3.3, pluggy-1.5.0
rootdir: C:\Users\17531\Documents\GitHub\Snoopy1866\tkintertools
configfile: pyproject.toml
collected 36 items                                                                                                                                                                                                                    

tests\test_animation\test_contollers.py ....                                                                                                                                                                                    [ 11%]
tests\test_color\test_colormap.py .                                                                                                                                                                                             [ 13%]
tests\test_color\test_hsl.py ........                                                                                                                                                                                           [ 36%]
tests\test_color\test_rgb.py .........                                                                                                                                                                                          [ 61%]
tests\test_theme\test_dark.py ..                                                                                                                                                                                                [ 66%]
tests\test_theme\test_light.py ..                                                                                                                                                                                               [ 72%]
tests\test_toolbox\test_enhanced.py ..                                                                                                                                                                                          [ 77%]
tests\test_toolbox\test_tools.py ........                                                                                                                                                                                       [100%]

========================================================================================================= 36 passed in 0.33s =========================================================================================================
PS C:\Users\17531\Documents\GitHub\Snoopy1866\tkintertools> pytest
======================================================================================================== test session starts =========================================================================================================
platform win32 -- Python 3.12.7, pytest-8.3.3, pluggy-1.5.0
rootdir: C:\Users\17531\Documents\GitHub\Snoopy1866\tkintertools
configfile: pyproject.toml
collected 36 items                                                                                                                                                                                                                    

tests\test_animation\test_contollers.py ....                                                                                                                                                                                    [ 11%]
tests\test_color\test_colormap.py .                                                                                                                                                                                             [ 13%]
tests\test_color\test_hsl.py ........                                                                                                                                                                                           [ 36%]
tests\test_color\test_rgb.py .........                                                                                                                                                                                          [ 61%]
tests\test_theme\test_dark.py ..                                                                                                                                                                                                [ 66%]
tests\test_theme\test_light.py ..                                                                                                                                                                                               [ 72%]
tests\test_toolbox\test_enhanced.py F.                                                                                                                                                                                          [ 77%]
tests\test_toolbox\test_tools.py ........                                                                                                                                                                                       [100%]

============================================================================================================== FAILURES ==============================================================================================================
_____________________________________________________________________________________________________ TestPhotoImage.test_resize _____________________________________________________________________________________________________ 

self = <tests.test_toolbox.test_enhanced.TestPhotoImage testMethod=test_resize>

    def setUp(self) -> None:
>       self.tk = tkinter.Tk()

tests\test_toolbox\test_enhanced.py:17:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _  

self = <tkinter.Tk object .>, screenName = None, baseName = 'pytest', className = 'Tk', useTk = True, sync = False, use = None

    def __init__(self, screenName=None, baseName=None, className='Tk',
                 useTk=True, sync=False, use=None):
        """Return a new top level widget on screen SCREENNAME. A new Tcl interpreter will
        be created. BASENAME will be used for the identification of the profile file (see
        readprofile).
        It is constructed from sys.argv[0] without extensions if None is given. CLASSNAME
        is the name of the widget class."""
        self.master = None
        self.children = {}
        self._tkloaded = False
        # to avoid recursions in the getattr code in case of failure, we
        # ensure that self.tk is always _something_.
        self.tk = None
        if baseName is None:
            import os
            baseName = os.path.basename(sys.argv[0])
            baseName, ext = os.path.splitext(baseName)
            if ext not in ('.py', '.pyc'):
                baseName = baseName + ext
        interactive = False
>       self.tk = _tkinter.create(screenName, baseName, className, interactive, wantobjects, useTk, sync, use)
E       _tkinter.TclError: Can't find a usable init.tcl in the following directories: 
E           {D:\Python\Python312\tcl\tcl8.6}
E       
E       D:/Python/Python312/tcl/tcl8.6/init.tcl: couldn't read file "D:/Python/Python312/tcl/tcl8.6/init.tcl": No error
E       couldn't read file "D:/Python/Python312/tcl/tcl8.6/init.tcl": No error
E           while executing
E       "source D:/Python/Python312/tcl/tcl8.6/init.tcl"
E           ("uplevel" body line 1)
E           invoked from within
E       "uplevel #0 [list source $tclfile]"
E       
E       
E       This probably means that Tcl wasn't installed properly.

D:\Python\Python312\Lib\tkinter\__init__.py:2346: TclError
====================================================================================================== short test summary info ======================================================================================================= 
FAILED tests/test_toolbox/test_enhanced.py::TestPhotoImage::test_resize - _tkinter.TclError: Can't find a usable init.tcl in the following directories:
==================================================================================================== 1 failed, 35 passed in 0.34s ====================================================================================================

Extra Information

• 我只是简单 clone 到本地，安装 pyproject.toml 中的 all 依赖，再安装 pylint 和 pytest，然后直接运行 pytest，未修改任何代码。
• init.tcl 存在：
  

Contact Details

No response

Code of Conduct

• I agree to follow this project's Code of Conduct

[Xiaokang2022]

见：python/cpython#126549 (comment)

CPython 背锅，与我无瓜（喜）。

[Xiaokang2022]

可能与 pytest 也有一定的关系，因为直接运行 tests/__main__.py 是不会产生任何的报错，多次运行也是一样的。

直接运行 tests/__main__.py 属于是直接使用 unittest 进行测试，没有使用 pytest。（这里用 pytest 就只是为了输出好看一些）而且 workflow 也只运行一遍，所以嘛，问题不大！

如果后续 workflow 真的出现了一些比较大的问题，切换成直接使用 unittest 测试即可。

[Snoopy1866]

好好好，我直接用 vscode 配置 unittest 批量测试就好了。

[Xiaokang2022]

好好好，我直接用 vscode 配置 unittest 批量测试就好了。

不用配置啊，直接打开 tests/__main__.py 然后运行这个文件即可自动测试全部内容（可以通过命令行运行，也可以直接运行这个文件，会自动查找全部的测试）。