Avoid search paths for ImportChecker when possible (#9595)
* Avoid search paths for ImportChecker when possible
If possible it is desirable to look for modules with no context file as
it results in no search paths being given to astroid's find_spec(). This
makes calls to it more uniform and opens up the possibility of effective
caching.
Refs #9310.
diff --git a/doc/whatsnew/fragments/9310.performance b/doc/whatsnew/fragments/9310.performance
new file mode 100644
index 0000000..d1d126b
--- /dev/null
+++ b/doc/whatsnew/fragments/9310.performance
@@ -0,0 +1,4 @@
+ImportChecker's logic has been modified to avoid context files when possible. This makes it possible
+to cache module searches on astroid and reduce execution times.
+
+Refs #9310.
diff --git a/pylint/checkers/imports.py b/pylint/checkers/imports.py
index ac8962c..c68877a 100644
--- a/pylint/checkers/imports.py
+++ b/pylint/checkers/imports.py
@@ -1045,9 +1045,12 @@
base = os.path.splitext(os.path.basename(module_file))[0]
try:
- importedmodname = astroid.modutils.get_module_part(
- importedmodname, module_file
- )
+ if isinstance(node, nodes.ImportFrom) and node.level:
+ importedmodname = astroid.modutils.get_module_part(
+ importedmodname, module_file
+ )
+ else:
+ importedmodname = astroid.modutils.get_module_part(importedmodname)
except ImportError:
pass
