importre string ='39801 356, 2102 1111'# Three digit number followed by space followed by two digit numberpattern ='(\d{3}) (\d{2})'# match variable contains a Match object.match = re.search(pattern, string)ifmatch:print(match.group())else:print("pattern not found")# Output: 801 ...
import re string = '39801 356, 2102 1111' # Three digit number followed by space followed by two digit number pattern = '(\d{3}) (\d{2})' # match variable contains a Match object. match = re.search(pattern, string) if match: print(match.group()) else: print("pattern not found...
Causes the resulting RE to match0 or more repetitions of the preceding RE, as many repetitions as are possible. ab*will match ‘a’, ‘ab’, or ‘a’ followed by any number of ‘b’s. 又比如:x*,可以匹配的字符串集合为S={'','x','xx','xxx',...} 此外a,ab这类不属于S的字符串...
\s Whitespace (\p{White_Space}) \S Not whitespace \w Word character (\p{Alphabetic} + \p{M} + \d + \p{Pc} + \p{Join_Control}) \W Not word characterASCII character classesThese classes are based on the definitions provided in UTS#18:Expand...
Split at each white-space character: importre txt ="The rain in Spain" x = re.split("\s",txt) print(x) Try it Yourself » You can control the number of occurrences by specifying themaxsplitparameter: Example Split the string only at the first occurrence: ...
Next, there is one more group of 3 digits d{3} followed by any hyphen, period or whitespace [\-\.\s]? appearing 0 or 1 time. The last group of 4 digits \d{4} is followed by a word boundary \b to make it clear that a phone number cannot be part of a bigger number. ...
IgnorePatternWhitespace- Eliminates the unescaped white space from the defined pattern and enables the comments marked with#(hashtag symbol). This option does not apply to character classes, numeric quantifiers, or tokens marking the beginning of an individual RegEx language element. ...
of data as input and removes any non-alphanumeric characters using a regex pattern. The pattern r'[\W_]+’ matches one or more non-alphanumeric characters or underscores. The re.sub function substitutes matches of the pattern with a space character, effectively removing them from the string....
using System; using System.Text.RegularExpressions; public class Example { public static void Main() { string input = "This is text with far too much " + "white space."; string pattern = "\\s+"; string replacement = " "; string result = Regex.Replace(input, pattern, replacement); Co...
Namespace: System.Text.RegularExpressions Assemblies: netstandard.dll, System.Text.RegularExpressions.dll Indicates whether the regular expression finds a match in the input string. Overloads Expand table IsMatch(String, String, RegexOptions, TimeSpan) ...