\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...
['A', 'ASCII', 'DEBUG', 'DOTALL', 'I', 'IGNORECASE', 'L', 'LOCALE', 'M', 'MULTILINE', 'RegexFlag', 'S', 'Scanner', 'T', 'TEMPLATE', 'U', 'UNICODE', 'VERBOSE', 'X', '_MAXCACHE', '__all__', '__builtins__', '__cached__', '__doc__', '__file__', '_...
\$a match if a string contains $ followed by a. Here, $ is not interpreted by a RegEx engine in a special way.If you are unsure if a character has special meaning or not, you can put \ in front of it. This makes sure the character is not treated in a special way....
\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...
match("dog", 1) # Match as "o" is the 2nd character of "dog". <re.Match object; span=(1, 2), match='o'> 如果你想定位匹配在 string 中的位置,使用 search() 来替代(另参考 search() vs. match())。 Pattern.fullmatch(string[, pos[, endpos]]) 如果整个 string 匹配这个正则表达式...
\$amatch if a string contains$followed bya. Here,$is not interpreted by a RegEx engine in a special way. If you are unsure if a character has special meaning or not, you can put\in front of it. This makes sure the character is not treated in a special way. ...
In string patterns without the ASCII flag, it will match the whole range of Unicode digits. \D Matches any non-digit character; equivalent to [^\d]. \s Matches any whitespace character; equivalent to [ \t\n\r\f\v] in bytes patterns or string patterns with the ASCII flag. ...
\ Escape special char or start a sequence. . Match any char except newline, see re.DOTALL ^ Match start of the string, see re.MULTILINE $ Match end of the string, see re.MULTILINE [] Enclose a set of matchable chars R|S Match either regex R or regex S. () Create capture group...
Regex^caret metacharacter target_string ="Emma is a Python developer and her salary is 5000$ \n Emma also knows ML and AI" In Python, the caret operator or sign is used tomatch a patternonly at the beginning of the line. For example, considering our target string, we found two things...
test="Python Programming"print("String: ",test)# First one character first_character=test[:1]print("First Character: ",first_character)# Last one character last_character=test[-1:]print("Last Character: ",last_character)# Everything except the first one character except_first=test[1:]print...