How to Determine the Application Path in a PyInstaller EXE?

Determining Application Path in pyInstaller EXE

In Python applications bundled as EXEs using pyInstaller, accessing the application path using sys.path[0] can be problematic. This path may be empty or misleading. To overcome this challenge, a more robust approach is required to determine the application's location.

Solution

To obtain the application's path, distinguish between its execution as a script or as a frozen EXE:

import os
import sys

config_name = 'myapp.cfg'

# Check if application is a script file or frozen exe
if getattr(sys, 'frozen', False):
    # Frozen executable, get the path from sys.executable
    application_path = os.path.dirname(sys.executable)
elif __file__:
    # Script file, get the path from __file__
    application_path = os.path.dirname(__file__)

config_path = os.path.join(application_path, config_name)

This solution effectively retrieves the application's path regardless of its execution mode. It allows for the reliable location of relative files, ensuring the application's functionality.

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