[commands] Only update annotation if an explicit override is given

3 years ago · b823a4bab1
1 changed files with 3 additions and 1 deletions
--- a/discord/ext/commands/core.py
+++ b/discord/ext/commands/core.py
@ -137,7 +137,9 @@ def get_signature_parameters(
    for name, parameter in iterator:
        default = parameter.default
        if isinstance(default, Parameter):  # update from the default
-            parameter._annotation = default.annotation
+            if default.annotation is not Parameter.empty:
+                parameter._annotation = default.annotation
+
            parameter._default = default.default
            parameter._displayed_default = default._displayed_default