From 18b14668932c1421965a3e3f6702b5056d5e60d6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=D0=9D=D0=B8=D0=BA=D0=BE=D0=BB=D0=B0=D0=B9=20=D0=A8=D0=B0?=
 =?UTF-8?q?=D0=BD=D0=B3=D0=B8=D0=BD?= <shanginn@gmail.com>
Date: Tue, 24 Jan 2023 23:06:50 +0800
Subject: [PATCH] Fix not imported 'validator' (#715)

otherwise `@validator("input_variables")` do not work
---
 docs/modules/prompts/examples/custom_prompt_template.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docs/modules/prompts/examples/custom_prompt_template.md b/docs/modules/prompts/examples/custom_prompt_template.md
index c3358eb0048..4caa6131c1e 100644
--- a/docs/modules/prompts/examples/custom_prompt_template.md
+++ b/docs/modules/prompts/examples/custom_prompt_template.md
@@ -34,7 +34,7 @@ Next, we'll create a custom prompt template that takes in the function name as i
 
 ```python
 from langchain.prompts import BasePromptTemplate
-from pydantic import BaseModel
+from pydantic import BaseModel, validator
 
 
 class FunctionExplainerPromptTemplate(BasePromptTemplate, BaseModel):