Many text processing commands (filters) can take input either from the standard input stream or from a file.

许多文本处理命令（过滤器）可以从标准输入流或从文件中获取输入。

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The Unicode standard provides just enough information to let text-processing software combine characters in a meaningful fashion.

Unicode标准提供了足够的信息，让文字处理软件能够以有意义的方式组合字符。

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Moreover, the standard modules Cookie (http.cookie in Python 3) and cookielib (http.cookiejar in Python 3) help in handling those headers at a higher level than raw text processing.

而且，标准模块 Cookie（Python 3 中的 http.cookie）和 cookielib（Python 3 中的 http.cookiejar）有助于在比原始的文本处理更高的层次上处理这些头部。

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