replace allowlist with a check for module type

Author: adqm

Lib/pydoc.py

@@ -1715,12 +1715,11 @@ def locate(path, forceload=0):
             return None
     if (
         _is_dunder_name(path)
-        and not isinstance(object, (type, type(__import__)))
-        and path not in SKIP_DUNDER_HELP
+        and not isinstance(object, (type, type(__import__), type(__future__)))
     ):
-        # if we're looking up a special variable and we don't find a class or a
-        # function, it's probably not what the user wanted (if it is, they can
-        # look up builtins.whatever)
+        # if we're looking up a special variable and we don't find a class,
+        # function, or module, it's probably not what the user wanted (if it
+        # is, they can look up builtins.whatever)
         return None
     return object
 
@@ -1847,12 +1846,6 @@ def _introdoc():
         enter "q", "quit" or "exit".
     ''')
 
-SKIP_DUNDER_HELP = frozenset({
-    '__future__',
-    '__hello__',
-    '__phello__',
-})
-
 def _is_dunder_name(x):
     return isinstance(x, str) and x.isidentifier() and len(x) > 4 and x[:2] == x[-2:] == '__'