How Can I Properly Bundle Data Files with PyInstaller's --onefile Option?

Bundling Data Files with PyInstaller (--onefile): Resolving File Reference Issues

When attempting to bundle an executable with PyInstaller using the --onefile option, incorporating additional files such as images and icons can prove challenging. The issue stems from the compiled executable's inability to locate these referenced files.

One potential solution lies in setting the environment variable for the executable path. In earlier PyInstaller versions, this was achieved using the Shish method. However, recent updates to PyInstaller have rendered this approach obsolete.

To resolve this issue, the path to the executable is now stored in sys._MEIPASS. The following code demonstrates how to access this path:

def resource_path(relative_path):
    """ Get absolute path to resource, works for dev and for PyInstaller """
    try:
        # PyInstaller creates a temp folder and stores path in _MEIPASS
        base_path = sys._MEIPASS
    except Exception:
        base_path = os.path.abspath(".")

    return os.path.join(base_path, relative_path)

By utilizing this modified approach, your compiled executable will successfully locate and utilize the required data files, ensuring seamless functionality.

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