\s Matches any whitespace character; equivalent to [ \t\n\r\f\v] in bytes patterns or string patterns with the ASCII flag. In string patterns without the ASCII flag, it will match the whole range of Unicode whi
\d match any 0-9 number (\D match any non-digit character) . match any single charcter ("\." match ".") [a,b,c] match a, b, or c [^a,b,c] match any except a,b,nor c [a-z] match any single charcter from a to z [0-9] match any single digit number from 0 to 9...
This code uses a regular expression to search for the pattern“brown.fox”within the string. The dot (.) in the pattern represents any character. If a match is found, it prints“Match found!”otherwise, it prints“Match not found”. importre string ="The quick brown fox jumps over the ...
$ Matches the expression to its left, at the end of a string before it experiences a line break -匹配字符串结尾。 (匹配其左侧的表达式,在字符串经历换行之前的结束处) . Matches any character except newline 匹配任意一个字符(除了换行符之外\n) a Matches exactly one character a 匹配字符a xy ...
a, X, 9, < -- ordinary characters just match themselves exactly. The meta-characters which do not match themselves because they have special meanings are: . ^ $ * + ? { [ ] \ | ( ) (details below) . (a period) -- matches any single character except newline '\n' ...
The funcions include match, search, find, and finditer. Regular expressionsThe following table shows some basic regular expressions: RegexMeaning . Matches any single character. ? Matches the preceding element once or not at all. + Matches the preceding element once or more times. * Matches ...
. matches any character (wild card) \s matches a whitespace character \S matches a non-whitespace character * means match 0 or more times. applies to preceding char(s) ? matches 0 or 1 [aeiou] matches a single character that is in specified set [a-z0-9] a single char that must be...
\sReturns a match where the string contains a white space character"\s"Try it » \SReturns a match where the string DOES NOT contain a white space character"\S"Try it » \wReturns a match where the string contains any word characters (characters from a to Z, digits from 0-9, an...
正则表达式,又成正规表示式,正规表示法,正规表达式,规则表达式,常规表示法(英语:Regular Expression,在代码 中常简写为regex、regexp或RE),是计算机科学的一个概念,正则表达式使用带个字符串来描述,匹配一系列匹配某个句 法规则的字符串,在很多文本编辑器里,正则表达式通常被用来检索,替换那些匹配某个模式的文本。
\g<id> Match prev named or numbered group, '<' & '>' are literal, e.g. \g<0> or \g<name> (not \g0 or \gname) Special character escapes are much like those already escaped in Python string literals. Hence regex '\n' is same as regex '\\n': ...