clarify callback protocol example

python · Feb 21, 2021 · a0c4cb8 · a0c4cb8
1 parent 497556f
commit a0c4cb8
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/docs/source/protocols.rst b/docs/source/protocols.rst
@@ -490,6 +490,7 @@ a double underscore prefix is used. For example:
 
  copy_a: Callable[[T], T]
  copy_b: Copy
+ copy_c: Callable[[T], T]
 
  copy_a = copy_b # OK
- copy_b = copy_a # Also OK
+ copy_b = copy_c # OK, but would fail without the double underscore prefix