python的readline

Python的readline是一个文件对象的方法，用于从文件中读取一行内容，包括换行符"\n"。当没有指定参数时，readline会读取整行内容，包括换行符。如果指定了一个非负数的参数，readline会返回指定大小的字符数，包括换行符。在Windows系统中，换行符用"\r\n"表示，而在UNIX系统中，换行符用"\n"表示。Python在处理文件时，会自动将Windows系统的"\r\n"转换为"\n"。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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