Add super-minimal support for enum.member()

pytype/overlays/enum_overlay.py

@@ -49,7 +49,6 @@
     "FlagBoundary",
     "verify",
     "property",
-    "member",
     "nonmember",
     "global_enum",
     "show_flag_values",

pytype/stubs/stdlib/enum.pytd

@@ -71,7 +71,7 @@ class EnumCheck: ...
 class FlagBoundary: ...
 def verify(): ...
 def property(): ...
-def member(): ...
-def nonmember(): ...
+def member(value: _T) -> _T: ...
+def nonmember(value): ...
 def global_enum(): ...
 def show_flag_values(): ...

pytype/tests/test_enums.py

@@ -1634,6 +1634,33 @@ def _missing_(cls, value: object) -> E: ...
         assert_type(foo.E("FOO"), foo.E)
       """)
 
+  def test_member(self):
+    """Tests that enum.member acts as a no-op."""
+    self.Check("""
+      import enum
+
+      class E(enum.Enum):
+        X = enum.member(1)
+
+      assert_type(E.X, E)
+      assert_type(E.X.value, int)
+    """)
+
+  def test_member_with_partial(self):
+    """Tests that enum.member acts as a no-op even with a partial."""
+    self.Check("""
+      import enum
+      import functools
+
+      def foo(x: int) -> int:
+        return x + 1
+
+      class E(enum.Enum):
+        X = enum.member(functools.partial(foo))
+
+      assert_type(E.X, E)
+    """)
+
 
 if __name__ == "__main__":
   test_base.main()