How Can I Find the Application Path in a pyInstaller-Generated EXE?

Locating Application Path in pyInstaller-Generated Python EXEs

When bundling a Python application into a Windows EXE using pyInstaller, accessing application-relative files may present a challenge. The issue arises due to sys.path returning an empty list within the EXE. To overcome this, a method for reliably determining the application's path is required.

One approach involves checking if the application is executing as a script or a frozen EXE:

import os
import sys

config_name = 'myapp.cfg'

# Identify the application path
if getattr(sys, 'frozen', False):
    application_path = os.path.dirname(sys.executable)
elif __file__:
    application_path = os.path.dirname(__file__)

# Determine the configuration file path
config_path = os.path.join(application_path, config_name)

In the above code:

• sys.executable provides the path to the frozen EXE.
• file provides the path to the script file if the application is running as a script.
• application_path stores the determined application path.
• config_path stores the path to the application-relative configuration file.

By utilizing this mechanism, it becomes possible to retrieve the correct path to application-relative files, regardless of whether the application is executing as a script or a pyInstaller-generated EXE.

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