The full line (because matchlist() always returns the entire match as its first element)

完整的行（因为 matchlist() 通常返回所有匹配作为首个元素）

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Specifically, a successful call to matchlist will return a list with the following elements.

尤其是，成功调用matchlist将返回一个包含以下元素的列表。

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The for loop then iterates through each line, matching it against the regular expression in ASSIGN_LINE using the built-in matchlist() function

然后，for 循环遍历每个行，使用内置的 matchlist() 函数根据 ASSIGN_LINE 中的正则表达式匹配它

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