In this article, will learn how to split a string based on a regular expression pattern in Python. The Pythons re module’sre.split()methodsplit the string by the occurrences of the regex pattern, returning a list containing the resulting substrings. After reading this article you will be ab...
Pattern.split(string, maxsplit=0) 等价于 split() 函数,使用了编译后的样式。 Pattern.findall(string[, pos[, endpos]]) 类似函数 findall(), 使用了编译后样式,但也可以接收可选参数 pos 和endpos ,限制搜索范围,就像 search()。 Pattern.finditer(string[, pos[, endpos]]) 类似函数 finiter()...
如果找不到该模式,则re.split()返回一个包含空字符串的列表。 您可以将maxsplit参数传递给re.split()方法。这是将要发生的最大拆分次数。 import re string = 'Twelve:12 Eighty nine:89 Nine:9.' pattern = '\d+'# maxsplit = 1# split only at the first occurrence result = re.split(pattern, st...
defmatch(pattern,string,flags=0):"""Try to apply the pattern at the startofthe string,returning a match object,or Noneifno match was found."""return_compile(pattern,flags).match(string)deffullmatch(pattern,string,flags=0):"""Try to apply the pattern to allofthe string,returning a match...
当然你也可以在regex字符串中指定模式,比如: re.compile('pattern', re.I | re.M) 它等价于: re.compile('(?im)pattern'),例如: >>> p=re.compile("\w+",re.I|re.M) >>> p.match("sadf234").group() 'sadf234' >>> p=re.compile("(?im)\w+") ...
cnt = multiLineCommentPattern.sub('', cnt) 4.2 分割 利用正则表达式可以分割字符串。 # 模块方法 # pattern 正则表达式 # string 待查寻字符串 # return 分割后字符串列表 # maxsplit,结果最多分割为maxsplit+1份 re.split(pattern, string, maxsplit=0, flags=0) ...
re.compile(pattern, flags=0) pattern:regex pattern in string format, which you are trying to match inside the target string. flags: The expression’s behavior can be modified by specifyingregex flagvalues. This is an optional parameter
re.split(pattern, string[, maxsplit=0, flags=0]) 此功能很常用,可以将将字符串匹配正则表达式的部分割开并返回一个列表。对 RegexObject,有函数: split(string[, maxsplit=0]) 例如,利用上面章节中介绍的语法: 1 2 3 4 5 6 >>> re.split('\W+', 'test, test, test.') ...
These are functions that involve regex matching but don’t clearly fall into either of the categories described above.re.split(<regex>, <string>, maxsplit=0, flags=0)Splits a string into substrings.re.split(<regex>, <string>) splits <string> into substrings using <regex> as the ...
import java.util.regex.Matcher; import java.util.regex.Pattern; public class Main { public static void main(String[] args) { String pattern = "(\\d{2})-(\\d{2})-(\\d{4})"; String inputString = "31-12-2022"; Pattern regex = Pattern.compile(pattern); Matcher matcher = regex....