Kivy/KivyMD 应用程序在 venv 环境中运行良好，但在 exe 文件中崩溃

Posted 2023-04-14

【中文标题】Kivy/KivyMD 应用程序在 venv 环境中运行良好，但在 exe 文件中崩溃

【英文标题】：Kivy/KivyMD app runs fine in venv environment but crashes in exe file

【发布时间】：2022-01-09 23:15:59

【问题描述】：

我尝试使用我使用 Kivy/KivyMD 编写的代码制作一个 exe 文件。我能够成功生成exe文件。但是在我单击其中一个列表项后，应用程序崩溃并引发错误：

 Traceback (most recent call last):
   File "scanpy\_metadata.py", line 28, in <module>
   File "pathlib.py", line 1221, in read_text
   File "pathlib.py", line 1208, in open
   File "pathlib.py", line 1063, in _opener
 FileNotFoundError: [Errno 2] No such file or directory: 'C:\\Users\\xie186\\AppData\\Local\\Temp\\_MEI82402\\pyproject.toml'

 During handling of the above exception, another exception occurred:

 Traceback (most recent call last):
   File "main.py", line 178, in <module>
   File "kivy\app.py", line 950, in run
   File "kivy\base.py", line 582, in runTouchApp
   File "kivy\base.py", line 347, in mainloop
   File "kivy\base.py", line 391, in idle
   File "kivy\base.py", line 342, in dispatch_input
   File "kivy\base.py", line 308, in post_dispatch_input
   File "kivy\_event.pyx", line 709, in kivy._event.EventDispatcher.dispatch
   File "kivymd\uix\list.py", line 854, in on_touch_up
   File "kivymd\uix\behaviors\ripple_behavior.py", line 296, in on_touch_up
   File "kivy\uix\behaviors\button.py", line 179, in on_touch_up
   File "kivy\_event.pyx", line 709, in kivy._event.EventDispatcher.dispatch
   File "main.py", line 118, in <lambda>
   File "main.py", line 139, in set_example_screen
   File "<string>", line 1, in <module>
   File "PyInstaller\loader\pyimod03_importers.py", line 476, in exec_module
   File "libs\baseclass\tabs.py", line 6, in <module>
   File "PyInstaller\loader\pyimod03_importers.py", line 476, in exec_module
   File "scanpy\__init__.py", line 3, in <module>
     =======
   File "PyInstaller\loader\pyimod03_importers.py", line 476, in exec_module
   File "scanpy\_metadata.py", line 38, in <module>
   File "scanpy\_compat.py", line 25, in pkg_metadata
   File "importlib_metadata\__init__.py", line 984, in metadata
   File "importlib_metadata\__init__.py", line 561, in from_name
 importlib_metadata.PackageNotFoundError: No package metadata was found for scanpy
[10680] Failed to execute script 'main' due to unhandled exception!

要重现错误，请使用此处的代码：

git clone https://github.com/xie186/pitaya.git
cd pitaya/
git checkout 067abaf4ead73862b2baa27909f6079f75fb2feb
pip install -r requirements.txt
python -m PyInstaller  .\pyinstaller.spec
cd dist/
.\pitaya.exe
# Then click one of the list items. 

根据错误，是因为这里的代码：https://github.com/theislab/scanpy/blob/16e62d1336a95966238113cdb5ab50f7d9f880ce/scanpy/_metadata.py#L28

Scany 是我的应用所依赖的包。它尝试在此处读取文件：https://github.com/theislab/scanpy/blob/master/pyproject.toml 但是运行exe文件时文件不可用。

如果我在 venv 环境中运行应用程序，它运行良好。任何帮助将不胜感激！

【参考方案1】：

解决方法： 由于这很可能是一个打包工件，我建议通过更改“scanpy\_metadata.py”文件来绕过它。具体的，在异常语句之后写

except (ImportError, LookupError, FileNotFoundError):
    __version__ = '0.0.0'  # or the real version number
    __author__ = 'Theis lab'
    __email__ = '[e-mail], [e-mail]'

这样您的代码就不会尝试（并且失败）找到“pyproject.toml”文件，也不会要求 importlib_metadata 为 scanpy 定位包元数据（并且也会失败）