Issue #26367: Have importlib.__init__() raise RuntimeError when

'level' is specified but no __package__.

This brings the function inline with builtins.__import__(). Thanks to
Manuel Jacob for the patch.

1 files changed, 1 insertions, 1 deletions

diff --git a/Lib/importlib/_bootstrap.py b/Lib/importlib/_bootstrap.py
index 6f62bb3..1b3b430 100644
--- a/Lib/importlib/_bootstrap.py
+++ b/Lib/importlib/_bootstrap.py
@@ -922,7 +922,7 @@ def _sanity_check(name, package, level):
         raise TypeError('module name must be str, not {}'.format(type(name)))
     if level < 0:
         raise ValueError('level must be >= 0')
-    if package:
+    if level > 0:
         if not isinstance(package, str):
             raise TypeError('__package__ not set to a string')
         elif package not in sys.modules: