How Can I Import Files from Non-Standard Locations in Python?

Importing Files from Non-Standard Locations

This question addresses the issue of importing a file from a non-standard location. When importing a file, Python typically searches the directory where the entry-point script is running and the system path. To import a file from a location outside this search path, a modification to the Python path at runtime is necessary.

Here's the specific solution:

In the import statement, the path to the desired file must be specified explicitly. For example, in the given scenario:

from application.app.folder.file import func_name

However, this approach may not always be convenient or tenable. Instead, you can add the desired path to the Python path at runtime:

# some_file.py
import sys
# caution: path[0] is reserved for script path (or '' in REPL)
sys.path.insert(1, '/path/to/application/app/folder')

import file

With this modification, you can now import the function from file.py within some_file.py:

from file import func_name

Note: This approach is recommended only for specific use cases. Generally, it's preferable to structure your files into packages to avoid the need for manually modifying the Python path.

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