From 6b3a13526f933e783a6859f3538f5f63e875c8a1 Mon Sep 17 00:00:00 2001 From: YZY <408856732@qq.com> Date: Tue, 24 Jun 2025 09:27:29 +0800 Subject: [PATCH] fix: duplicate function calling to check is_sequence_field --- fastapi/dependencies/utils.py | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/fastapi/dependencies/utils.py b/fastapi/dependencies/utils.py index 84dfa4d03..c57473539 100644 --- a/fastapi/dependencies/utils.py +++ b/fastapi/dependencies/utils.py @@ -717,7 +717,8 @@ def _get_multidict_value( field: ModelField, values: Mapping[str, Any], alias: Union[str, None] = None ) -> Any: alias = alias or field.alias - if is_sequence_field(field) and isinstance(values, (ImmutableMultiDict, Headers)): + is_sequence = is_sequence_field(field) + if is_sequence and isinstance(values, (ImmutableMultiDict, Headers)): value = values.getlist(alias) else: value = values.get(alias, None) @@ -728,7 +729,7 @@ def _get_multidict_value( and isinstance(value, str) # For type checks and value == "" ) - or (is_sequence_field(field) and len(value) == 0) + or (is_sequence and len(value) == 0) ): if field.required: return