Merge pull request #21459 from github/tausbn/python-fix-missing-relative-imports

Python: Fix resolution of relative imports from namespace packages

python/ql/lib/change-notes/2026-03-11-fix-unresolved-relative-imports.md

@@ -0,0 +1,5 @@
+---
+category: fix
+---
+
+- Fixed the resolution of relative imports such as `from . import helper` inside namespace packages (directories without an `__init__.py` file), which previously did not work correctly, leading to missing flow.

python/ql/lib/semmle/python/Import.qll

@@ -17,6 +17,10 @@ private predicate valid_module_name(string name) {
   exists(Module m | m.getName() = name)
   or
   exists(Builtin cmod | cmod.getClass() = Builtin::special("ModuleType") and cmod.getName() = name)
+  or
+  // Namespace packages may not have a corresponding Module entity,
+  // but their names are still valid for the purpose of import resolution.
+  name = moduleNameFromFile(any(Folder f))
 }
 
 /** An artificial expression representing an import */