From e4cc44ad53a184f3b4363e73fa1bacd44fb84881 Mon Sep 17 00:00:00 2001
From: Stainless Bot <107565488+stainless-bot@users.noreply.github.com>
Date: Tue, 2 Apr 2024 15:57:04 +0200
Subject: [PATCH] chore(internal): defer model build for import latency (#431)

---
 src/anthropic/_models.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/anthropic/_models.py b/src/anthropic/_models.py
index 77c755b1..0f001150 100644
--- a/src/anthropic/_models.py
+++ b/src/anthropic/_models.py
@@ -1,5 +1,6 @@
 from __future__ import annotations
 
+import os
 import inspect
 from typing import TYPE_CHECKING, Any, Type, Union, Generic, TypeVar, Callable, cast
 from datetime import date, datetime
@@ -38,6 +39,7 @@
     is_given,
     is_mapping,
     parse_date,
+    coerce_boolean,
     parse_datetime,
     strip_not_given,
     extract_type_arg,
@@ -74,7 +76,9 @@ class _ConfigProtocol(Protocol):
 
 class BaseModel(pydantic.BaseModel):
     if PYDANTIC_V2:
-        model_config: ClassVar[ConfigDict] = ConfigDict(extra="allow")
+        model_config: ClassVar[ConfigDict] = ConfigDict(
+            extra="allow", defer_build=coerce_boolean(os.environ.get("DEFER_PYDANTIC_BUILD", "true"))
+        )
     else:
 
         @property