Regular Expressions (Regex) Tutorial

Basic Examples ; -d+(-.-d-d)?, contains a positive integer or a floating point number with exactly two characters after the decimal point. ; [^i*&2@], contains ...

For example, re = /-w+-s/g creates a regular expression that looks for one or more characters followed by a space, and it looks for this ...

Let's take an example: -w matches any alphanumeric character. If the regex pattern is expressed in bytes, this is equivalent to the class [a-zA-Z0-9_] . If the ...

Examples. The following example finds regular expression pattern matches in a string, then lists the matched groups, captures, and capture positions. #using ...

The following examples illustrate the use and construction of simple regular expressions. Each example includes the type of text to match, one or more ...

Examples: To match a sequence of literal characters, simply write those characters in the pattern. To match a single character from ...

A simple example for a regular expression is a (literal) string. For example, the Hello World regex matches the Hello World string.

Python RegEx · Example. Replace every white-space character with the number 9: import re txt = The rain in Spain x = re.sub(-s, 9, txt) print(x) · Example. Python PIP · Try it Yourself · Try it

Most characters, including all letters ( a-z and A-Z ) and digits ( 0-9 ), match itself. For example, the regex x matches substring x ; z matches z ; and 9 ...