如何从Python脚本获取返回类型

def my_function():
    return "Hello, World!"

return_type = type(my_function())
print(return_type)  # 输出：<class 'str'>

import inspect

def my_function():
    return "Hello, World!"

signature = inspect.signature(my_function)
return_type = signature.return_annotation
print(return_type)  # 输出：<class 'str'>

from typing import get_type_hints

def my_function() -> str:
    return "Hello, World!"

type_hints = get_type_hints(my_function)
return_type = type_hints['return']
print(return_type)  # 输出:<class 'str'>