如果只将其创建为字符串类型，且输入多个值，XPath解析不返回任何用户。

If it is created only as a string and multiple values are entered, the XPath resolution does not return any users.

youdao

D {format}：括弧里的字符串被传递给strftime(3)函数，返回值填充到提示符中。如果不传参数，会按照系统默认的当地时间格式来显示。

D {format} : the format is passed to strftime (3) and the result is inserted into the prompt string; an empty format results in a locale-specific time representation.

youdao

如果不匹配，那么就会返回字符串None found 。

If no match is found, then the string None found! Is returned.

youdao

I don't happen to like this, but he thinks that is, give a combination of a number multiplication in a string, this will in fact give us back a new string with that many replicas, if you like, of the string concatenated together.

我不喜欢这么做但是他认为,也就是说，返回一个字符串的,某个特定数字的倍数，这实际上会返回一个新字符串,一个原来的字符串的很多复制品，连接到一块的一个字符串。

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