How to Resolve PyLint \'Unable to Import\' Error for Module Imports in Sub-Directories?

PyLint "Unable to Import" Error: Resolving PYTHONPATH for Module Imports

When running PyLint from the Wing IDE on Windows, users may encounter an error stating "Unable to import 'module'" when importing modules from a sub-directory (package). This occurs despite the fact that the import works correctly at runtime due to the top-level directory being included in the Python path.

To resolve this issue, two options are available:

Option 1: Modify PYTHONPATH

Modify the PYTHONPATH environment variable to include the directory above the module. This ensures that PyLint can locate the module during its analysis.

Option 2: Update PyLint configuration

Alternatively, users can edit their PyLint configuration file (~/.pylintrc) to include the path to the module manually. This involves adding the following line to the configuration file:

[MASTER]
init-hook='import sys; sys.path.append("/path/to/root")'

(Note that for different versions of PyLint, the [MASTER] section may need to be changed to [General]).

By following these steps, users can configure PyLint to successfully import modules from sub-directories, resolving the "Unable to import" error and ensuring accurate code analysis.

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