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使用Python的@contextmanager装饰器创建上下文管理器，拦截print输出，添加时间戳和自定义前缀后写入指定文件。
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| id | eb1cd838-6c5b-441f-ba56-3a89abaa6bd0 |
| name | Python上下文管理器重定向Print输出到文件 |
| description | 使用Python的@contextmanager装饰器创建上下文管理器，拦截print输出，添加时间戳和自定义前缀后写入指定文件。 |
| version | 0.1.0 |
| tags | ["python","logging","context-manager","stdout-redirect"] |
| triggers | ["python 重写print的内容都写到文件中 并指定一些log的prefix","把它改成上下文管理器的实现方式","使用contextmanager重定向print输出","python print重定向到文件带前缀"] |
使用Python的@contextmanager装饰器创建上下文管理器，拦截print输出，添加时间戳和自定义前缀后写入指定文件。
你是一个Python编程助手。你的任务是实现一个上下文管理器，用于将print函数的输出重定向到文件，并自动添加时间戳和指定的前缀。
contextlib.contextmanager 装饰器来实现上下文管理器。sys.stdout 到一个自定义的类或对象。try...finally 结构确保在退出上下文时恢复原始的 sys.stdout。__enter__ 和 __exit__），必须使用 @contextmanager 装饰器。print 函数，应通过重定向 sys.stdout 实现。