How to Determine Application Path in Python EXEs Generated by pyInstaller?

Determining Application Path in Python EXEs Generated by pyInstaller

When building Python applications as EXEs using pyInstaller, it becomes necessary to locate specific files relative to the application's path. For applications that require configuration files adjacent to the executable, the conventional method of using sys.path[0] fails in EXE scenarios.

To address this issue, a more reliable approach is employed:

import os
import sys

config_name = 'myapp.cfg'

# Check if the application is a script or a frozen EXE
if getattr(sys, 'frozen', False):
    application_path = os.path.dirname(sys.executable)
elif __file__:
    application_path = os.path.dirname(__file__)

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

The getattr() function is used to determine if the 'frozen' attribute is defined in sys, indicating an EXE context. If it is, the application path is set to the directory containing the EXE executable. Otherwise, it falls back to using the __file__ attribute of the running Python module.

By incorporating this approach, applications can consistently retrieve their current path, regardless of whether they are executed as scripts or converted into pyInstaller EXEs. This ensures that configuration files and other associated resources are always accessible, even in EXE environments.

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