Python 如何使用“初始化”正确初始化对象；加上；陈述

使用

with

语句正确初始化python对象时遇到问题。请参阅下面的源代码：

class TestClass(object):
    def __enter__(self):
        ...

    def __exit__(self, arg1, arg2, arg3):
        ...

test_class_outside_of_c_manager = TestClass()
test_class_outside_of_c_manager_type = type(test_class_outside_of_c_manager)

with TestClass() as test_class_inside_c_manager:
    test_class_inside_c_manager_type = type(test_class_inside_c_manager)

---

_c_manager_type的

test_class_-out_类型为
TestClass
，而
test_class_-in_c_manager_类型
的类型为
NoneType
。我是否遗漏了一些非常明显的内容？
从
\uuuu enter\uuuu（）
返回的任何内容都作为with语句的
变量绑定到

您可能只需要：

def __enter__(self):
    ...
    return self

你从回车键返回吗？我认为从uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu！从
返回
self
\uuuuu\uuuu\uuuuuu\uuuuu
已解决所有问题我将升级为答案。非常感谢！