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Скачать или смотреть Resolving the Missing Dependency Issue in PyInstaller for Python Applications

  • vlogize
  • 2025-03-26
  • 24
Resolving the Missing Dependency Issue in PyInstaller for Python Applications
missing dependency after running pyinstallerpythonpyinstallergtk3cairo
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Описание к видео Resolving the Missing Dependency Issue in PyInstaller for Python Applications

Learn how to fix the missing dependency issue with PyInstaller when creating executables from Python applications, especially with GTK3 and Cairo graphics.
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This video is based on the question https://stackoverflow.com/q/73981704/ asked by the user 'Walt' ( https://stackoverflow.com/u/1372685/ ) and on the answer https://stackoverflow.com/a/74020457/ provided by the user 'Walt' ( https://stackoverflow.com/u/1372685/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: missing dependency after running pyinstaller

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l...
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
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Resolving the Missing Dependency Issue in PyInstaller for Python Applications

Creating an executable from a Python application using PyInstaller can sometimes lead to unexpected challenges, such as missing dependencies. These issues often arise when specific libraries or modules are not correctly identified by PyInstaller, resulting in runtime errors during execution.

The Challenge

One common issue encountered is the error message:

[[See Video to Reveal this Text or Code Snippet]]

This indicates that while your application may run perfectly in an Integrated Development Environment (IDE) like PyCharm or from the command line, the executable generated by PyInstaller is failing to locate the necessary dependencies, particularly related to graphical libraries.

Understanding the Problem

In the presented case:

The application relies on GTK3 for GUI elements and Cairo for custom graphics drawing.

Although the necessary packages are installed on the system (like python3-gi and python3-gi-cairo), PyInstaller fails to include the appropriate import statements or context that allows these libraries to function properly in the executable environment.

Step-by-Step Solution

To resolve the dependency issue and ensure the application runs smoothly as a standalone executable, follow these steps:

1. Check for Missing Imports

Often, the first step is to identify any modules that are not being imported in your code, which could include necessary graphics dependencies. In this particular scenario, it was found that the cairo module was not initially imported.

Add the following import statement to your application:

[[See Video to Reveal this Text or Code Snippet]]

This simple addition resolved the dependency issue and allowed PyInstaller to package everything needed to run the application.

2. Building the Executable

Use the following PyInstaller command to build your executable:

[[See Video to Reveal this Text or Code Snippet]]

This command tells PyInstaller to create a single executable file that can be easily distributed and executed.

3. Testing the Executable

After the build process completes, test the generated executable from the terminal (not from the IDE):

[[See Video to Reveal this Text or Code Snippet]]

This step is crucial to confirm that all dependencies are correctly included and that the executable behaves as expected.

Additional Tips for Troubleshooting

Review Dependencies:
Keep track of all third-party libraries your application uses. You can check your installed packages using pip list for Python.

Documentation:
Frequently consult the PyInstaller documentation, which provides useful information about handling various libraries and dependencies effectively.

Error Messages:
Pay close attention to error messages during execution. They often provide clues about missing components that need to be addressed.

Conclusion

Building an executable with PyInstaller is generally straightforward, but it can sometimes expose underlying dependency issues. By ensuring all necessary libraries are imported and correctly configured, you can create a reliable standalone application. In this case, the addition of the import cairo statement was the key to resolving the issue.

By following the outlined steps, you can overcome similar hurdles in your own projects, enabling you to share your applications with ease.

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