Dependencies with importlib.import_module are not detected

[lmmx]

Describe the bug

• It is possible to declare dependencies using importlib.import_module("foo") rather than import foo
• These are not identified by deptry

To Reproduce

Steps to reproduce the behavior:

• Add tests/data/some_dyn_imports.py

from importlib import import_module

import_module("polars")

• Add test to tests/unit/imports/test_extract.py:

def test_dyn_import_parser_py() -> None:
     some_dyn_imports_path = Path("tests/data/some_dyn_imports.py")

     assert get_imported_modules_from_list_of_files([some_dyn_imports_path]) == {
        "importlib": [Location(some_dyn_imports_path, line=1, column=1)],
        "polars": [Location(some_dyn_imports_path, line=3, column=1)],
     }

Expected behavior

The test should pass in cases where the import argument is specified.

System:

• OS: e.g. Linux Mint 21
• Language Version: Python 3.12
• PDM version: PDM 2.17.1

Edit I extended the node visitor to accept nodes of this type, initial version captures

• import importlib -> importlib.import_module("a") lmmx@709acb8
• from importlib import import_module -> import_module("b") lmmx@025df97
• from importlib import import_module as im -> im("c") lmmx@73c790a

[mkniewallner]

This would be a great addition to the library. Will gladly accept a pull request for this feature.

[lmmx]

My pleasure:

• Support imports using importlib.import_module #782

Also added a note in the docs usage page to clarify that this is only for string literals (code search shows this is not uncommon in real code)

[mkniewallner]

Resolved by #782.