解析python文件中的函数名、参数、返回值？

import inspect

def parse_python_file(file_path):
    with open(file_path, 'r') as file:
        source_code = file.read()

    # 获取源代码中的所有函数定义
    function_defs = inspect.getmembers(
        inspect.getmodule(inspect.currentframe()),
        inspect.isfunction
    )

    for function_name, function in function_defs:
        # 获取函数的参数信息
        signature = inspect.signature(function)
        parameters = signature.parameters

        # 获取函数的返回值信息
        return_annotation = signature.return_annotation

        print(f"函数名：{function_name}")
        print("参数：")
        for param_name, param in parameters.items():
            print(f"- {param_name}: {param.annotation}")
        print(f"返回值：{return_annotation}")
        print()

# 调用示例
parse_python_file('example.py')