string expression

For example, the regular expression ABC will match the string ABC but not DEF.

例如，正则表达式ABC将与字符串ABC匹配，但不与DEF匹配。

string expression from which the rightmost characters are returned.

String表达式，从该表达式返回最右端的字符。

Source: The input string the regular expression is matched against.

source：正则表达式所匹配的输入字符串。

Note how the regular expression above captures only digits and dots, after "connection from" and a string of non-digits.

请注意，上面的正则表达式如何只捕获“connection from”和一个非数字的字符串后面的数字和点。

Given a string, it loops through the Match to try to find the appropriate regular expression.

给定一个字符串，它对Match进行循环以试图找到相应的正则表达式。

method, entering the file name parameter as a string expression.

方法，并输入字符串表达式形式的文件名参数。

The Django URL dispatch system uses regular-expression configuration modules that map URL string patterns to Python methods called views.

Django URL分发系统使用了正则表达式配置模块，它可以将URL字符串模式映射为Python方法views。

In this case, that expression is a call to the built-in strftime() function, which returns a standard timestamp string of the form: "Fri Oct2314:51:012009".

在这种情况下，这个表达式调用内置的strftime（）函数，这个函数会返回一个标准时间戳字符串：“Fri Oct2314：51：012009”。

Using a regular expression engine, it is easy to test if a string matches the pattern.

通过使用正则表达式引擎，很容易测试出字符串是否与模式匹配。

The iPod touch user string differs in that the beginning of the parenthesized expression is iPod, rather than iPhone.

iPod touch用户字符串的不同之处在于括号表达式的开头为iPod，而不是iPhone。

Returns a concatenated string created by evaluating a string expression over a set.

返回通过在集合上对字符串表达式计算而创建的连锁字符串.

any valid numeric expression or string expression.

任何有效的数值表达式或String表达式。