Set module_completer to reflect the namespace that the PyREPL actually loads

Author: whitphx

Lib/_pyrepl/_module_completer.py

@@ -17,8 +17,8 @@
 
 
 def make_default_module_completer() -> ModuleCompleter:
-    # Inside pyrepl, __package__ is set to '_pyrepl'
-    return ModuleCompleter(namespace={'__package__': '_pyrepl'})
+    # Inside pyrepl, __package__ is set to None by default
+    return ModuleCompleter(namespace={'__package__': None})
 
 
 class ModuleCompleter:

Lib/_pyrepl/readline.py

@@ -606,6 +606,7 @@ def _setup(namespace: Mapping[str, Any]) -> None:
     # set up namespace in rlcompleter, which requires it to be a bona fide dict
     if not isinstance(namespace, dict):
         namespace = dict(namespace)
+    _wrapper.config.module_completer = ModuleCompleter(namespace)
     _wrapper.config.readline_completer = RLCompleter(namespace).complete
 
     # this is not really what readline.c does.  Better than nothing I guess