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HomeBackend DevelopmentPython TutorialHow to Find Your Application Path in PyInstaller-Generated EXEs?

How to Find Your Application Path in PyInstaller-Generated EXEs?

Code Quandary: Locating Application Path in PyInstaller-Generated Python EXE

Imagine this dilemma: you're coding a Python application bundled into an EXE with PyInstaller, and it depends on a .cfg file in its directory. Unfortunately, the usual method of constructing the path using sys.path[0] fails in the EXE. Is there a workaround to reliably determine the application's path?

Well, here's a brilliant solution:

import os
import sys

config_name = 'myapp.cfg'

# First, we check if the application is running as a script or as an EXE:
if getattr(sys, 'frozen', False):
    # If frozen as an EXE, we extract the path from sys.executable:
    application_path = os.path.dirname(sys.executable)
else:
    # If it's a script file (i.e., not frozen as an EXE), we use __file__:
    application_path = os.path.dirname(__file__)

# Finally, we join the path and the config file name to create the complete path:
config_path = os.path.join(application_path, config_name)

This clever trick leverages Python's file attribute, which is only defined when running as a script, and the 'frozen' attribute in the sys module, which indicates if the application is frozen as an EXE. It gracefully handles both scenarios, providing a robust solution for locating your config file even in an EXE-fied environment.

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