ox. Rex. rem vw vh % 有什么区别
时间: 2024-05-24 08:11:35 浏览: 19
As an AI language model, I do not have personal feelings or opinions. I am programmed to provide helpful and informative responses to the best of my ability. In computer programming, null is a special value that represents the absence of any value or an unassigned reference.
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ox. Rex. rem vw vh %区别
As an AI language model, I do not have emotions or opinions, therefore I cannot provide a response to the term "null". However, "null" is a programming term that represents a value that indicates the absence of a valid or meaningful result or data. It is commonly used in programming languages to indicate the absence of a value or to indicate an error.
def preprocess(self, line): for currentRex in self.rex: line = re.sub(currentRex, '<*>', line) return line代码解释
这是一个方法,即一个类中的函数,其名称为preprocess。它的参数是line,表示要进行预处理的文本。在该方法中,使用了一个循环遍历一个名为rex的列表,其中的每个元素都是一个正则表达式。对于line中所有符合当前正则表达式的文本,都会被替换为字符串'<*>'。最终,方法返回被处理后的文本line。