From 253686f2efdcb14b88e82cc582aa81a40679f8ed Mon Sep 17 00:00:00 2001
From: Kamil Monicz <kamil@monicz.dev>
Date: Thu, 7 Mar 2024 14:15:31 +0100
Subject: [PATCH] Faster isoformat encoding

---
 fastapi/encoders.py | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/fastapi/encoders.py b/fastapi/encoders.py
index e380af3ccc..ae096b9fce 100644
--- a/fastapi/encoders.py
+++ b/fastapi/encoders.py
@@ -27,10 +27,7 @@ from typing_extensions import Annotated, Doc  # type: ignore [attr-defined]
 
 from ._compat import PYDANTIC_V2, Url, _model_dump
 
-
-# Taken from Pydantic v1 as is
-def isoformat(o: Union[datetime.date, datetime.time]) -> str:
-    return o.isoformat()
+isoformat: Callable[[Union[datetime.date, datetime.time]], str] = methodcaller("isoformat")
 
 
 # Taken from Pydantic v1 as is