Bug pylint 3342 (#1148)

* Adds some type hints

* Adds a logger module

* Remove this useless module

* It is probably not a good idea to apply transforms on module which have been authorized to be directly imported

* Adds a function named is_module_name_part_of_extension_package_whitelist which returns True if the beginning of a module dotted name is part of the package whitelist in argument

* Adds the extension_package_whitelist variable to the brainless manager in order unittest dealing with this managert to be ok

* Adds two tests that check the behavior of the is_module_name_part_of_extension_package_whitelist function

* Updating Changelog

* Adds explanation to the ChangeLog entry

Co-authored-by: Pierre Sassoulas <pierre.sassoulas@gmail.com>

1 files changed, 18 insertions, 1 deletions

diff --git a/astroid/modutils.py b/astroid/modutils.py
index 2604f9b4..65a6253e 100644
--- a/astroid/modutils.py
+++ b/astroid/modutils.py
@@ -46,8 +46,10 @@ import itertools
 import os
 import platform
 import sys
+import types
 from distutils.errors import DistutilsPlatformError  # pylint: disable=import-error
 from distutils.sysconfig import get_python_lib  # pylint: disable=import-error
+from typing import Set
 
 from astroid.interpreter._import import spec, util
 
@@ -197,7 +199,7 @@ def _cache_normalize_path(path):
         return result
 
 
-def load_module_from_name(dotted_name):
+def load_module_from_name(dotted_name: str) -> types.ModuleType:
     """Load a Python module from its name.
 
     :type dotted_name: str
@@ -648,3 +650,18 @@ def is_namespace(specobj):
 
 def is_directory(specobj):
     return specobj.type == spec.ModuleType.PKG_DIRECTORY
+
+
+def is_module_name_part_of_extension_package_whitelist(
+    module_name: str, package_whitelist: Set[str]
+) -> bool:
+    """
+    Returns True if one part of the module name is in the package whitelist
+
+    >>> is_module_name_part_of_extension_package_whitelist('numpy.core.umath', {'numpy'})
+    True
+    """
+    parts = module_name.split(".")
+    return any(
+        ".".join(parts[:x]) in package_whitelist for x in range(1, len(parts) + 1)
+    )