diff --git a/README.md b/README.md
index c7c112b..818e7d5 100644
--- a/README.md
+++ b/README.md
@@ -113,10 +113,11 @@ chats = load_chats("async_chat.jsonl")
 await async_chat_completion(langs, chkpoint="async_chat.jsonl", nproc=2, data2chat=data2chat, wait=True)
 ```
 
-示例4，使用工具（自定义函数）：
+### 工具调用
+
+定义函数：
 
 ```python
-# 定义函数
 def add(a: int, b: int) -> int:
     """
     This function adds two numbers.
@@ -142,12 +143,33 @@ def mult(a:int, b:int) -> int:
         int: The product of the two numbers.
     """
     return a * b
-# 传输函数
-chat = Chat("find the value of (23723 * 1322312 ) + 12312") # 传入函数列表，可以是多个函数
-# 自动调用工具，默认使用 tool_choice
-chat.autoresponse(display=True, tool_choice='tool_choice') # 或者用 function_call
 ```
 
+添加函数到 `Chat` 对象：
+
+```py
+from chattool import Chat
+chat = Chat("find the value of (23723 * 1322312 ) + 12312")
+chat.settools([add, mult])
+```
+
+自动执行工具，根据返回信息判断是否结束，`maxturns` 默认为 3：
+
+```py
+chat.autoresponse(display=True, tool_type='tool_choice', maxturns=3) 
+```
+
+使用通用函数 `python`
+
+```py
+from chattool.functioncall import python
+chat = Chat("find the value of (23723 * 1322312 ) + 12312")
+chat.settools([python])
+chat.autoresponse(display=True, tool_type='tool_choice', maxturns=3) 
+```
+
+注意，执行模型生成的任意代码有潜在风险。
+
 ## 开源协议
 
 使用 MIT 协议开源。
diff --git a/README_en.md b/README_en.md
index 824115c..68b5e8d 100644
--- a/README_en.md
+++ b/README_en.md
@@ -118,6 +118,64 @@ when using `async_chat_completion` in Jupyter notebook, you should use the `awai
 await async_chat_completion(langs, chkpoint="async_chat.jsonl", nproc=2, data2chat=data2chat, wait=True)
 ```
 
+
+### Tool Call
+
+Define functions:
+
+```python
+def add(a: int, b: int) -> int:
+    """
+    This function adds two numbers.
+
+    Parameters:
+        a (int): The first number.
+        b (int): The second number.
+
+    Returns:
+        int: The sum of the two numbers.
+    """
+    return a + b
+
+def mult(a: int, b: int) -> int:
+    """This function multiplies two numbers.
+    It is a useful calculator!
+
+    Args:
+        a (int): The first number.
+        b (int): The second number.
+
+    Returns:
+        int: The product of the two numbers.
+    """
+    return a * b
+```
+
+Add functions to the `Chat` object:
+
+```python
+from chattool import Chat
+chat = Chat("find the value of (23723 * 1322312 ) + 12312")
+chat.settools([add, mult])
+```
+
+Automatically execute the tool based on the return information. The default value for `maxturns` is 3:
+
+```python
+chat.autoresponse(display=True, tool_type='tool_choice', maxturns=3)
+```
+
+Use the general function `python`:
+
+```python
+from chattool.functioncall import python
+chat = Chat("find the value of (23723 * 1322312 ) + 12312")
+chat.settools([python])
+chat.autoresponse(display=True, tool_type='tool_choice', maxturns=3)
+```
+
+Note that executing any code generated by the model has potential risks.
+
 ## License
 
 This package is licensed under the MIT license. See the LICENSE file for more details.
diff --git a/chattool/__init__.py b/chattool/__init__.py
index bb784f0..0b89eee 100644
--- a/chattool/__init__.py
+++ b/chattool/__init__.py
@@ -2,7 +2,7 @@
 
 __author__ = """Rex Wang"""
 __email__ = '1073853456@qq.com'
-__version__ = '3.2.1'
+__version__ = '3.3.0'
 
 import os, sys, requests, json
 from .chattype import Chat, Resp
diff --git a/chattool/functioncall.py b/chattool/functioncall.py
index 309a1e1..80573c8 100644
--- a/chattool/functioncall.py
+++ b/chattool/functioncall.py
@@ -92,4 +92,28 @@ def exec_python_code(code:str)->dict:
                 newspace[key] = str(val)
         return newspace
     except Exception as e:
-        return {'error': str(e)}
\ No newline at end of file
+        return {'error': str(e)}
+
+def python(code: str):
+    """Execute the code and return the result or error message
+    
+    Args:
+        code (str): code to execute
+
+    Returns:
+        result or error message
+    """
+    local_vars = {}
+    # Split the code into lines
+    lines = code.strip().split('\n')
+
+    try:
+        # Execute all lines except the last one
+        exec('\n'.join(lines[:-1]), {}, local_vars)
+
+        # Evaluate the last expression
+        result = eval(lines[-1], {}, local_vars)
+        
+        return result
+    except Exception as e:
+        return str(e)
\ No newline at end of file
diff --git a/setup.py b/setup.py
index 170c0b3..e316e18 100644
--- a/setup.py
+++ b/setup.py
@@ -7,7 +7,7 @@
 with open('README.md') as readme_file:
     readme = readme_file.read()
 
-VERSION = '3.2.1'
+VERSION = '3.3.0'
 
 requirements = [
     'Click>=7.0', 'requests>=2.20', "responses>=0.23", 'aiohttp>=3.8',