typing improvements

ming/datastore.py

@@ -4,6 +4,7 @@
 from typing import Union
 import urllib
 from pymongo import MongoClient
+from pymongo.database import Database
 from pymongo.errors import ConnectionFailure, InvalidURI
 from pymongo.uri_parser import parse_uri
 
@@ -174,11 +175,11 @@ def __getattr__(self, name):
         return getattr(self.db, name)
 
     @property
-    def conn(self):
+    def conn(self) -> Conn:
         return self.bind.conn
 
     @property
-    def db(self):
+    def db(self) -> Database:
         """This is the database on MongoDB.
 
         Accessing this property returns the pymongo db,

ming/odm/property.pyi

@@ -1,5 +1,6 @@
 
 # re-use all the Field type handling
+from collections.abc import Iterable
 from typing import overload, Union, Type, Any, TypeVar, TypeAlias
 
 from bson import ObjectId
@@ -21,6 +22,8 @@ class RelationProperty:
     def __new__(self, related: str, via: str=None, fetch=True) -> Any:...
     @overload
     def __new__(self, related: Type[MC], via: str=None, fetch=True) -> MC:...
+    @overload
+    def __new__(self, related: Type[MC], via: str=None, fetch=True) -> Iterable[MC]:...
 
 
 def __getattr__(name) -> Any: ...  # marks file as incomplete