Python re.split() Method

Python re module

re.split()is Pythonreused in the module forsplitting strings with regular expressionsfunction.

It splits the string according to the matched pattern and returns a list.

Word Definitions： split 是分割、 Split 的意思。

Basic Syntax and Parameters

Syntax Format

re.split(pattern, string, maxsplit=0, flags=0)

Parameter Description

  • pattern: The regular expression used for splitting
  • string: The string to be split
  • maxsplit: Maximum number of splits, 0 means unlimited
  • flags: Regular expression flags

Function Description

  • Return Value: Returns a list of strings.

Examples

Example 1: Split by Space

Example

import re

text = "Python Java JavaScript"

# Split by space
result = re.split(r' ', text)

print(result)

Expected output:

['Python', 'Java', 'JavaScript']

Example 2: Split by Comma (Handling Multiple Delimiters)

Example

import re

text = "apple,banana;orange|grape"

# Split by comma, semicolon, and vertical bar
result = re.split(r'[,;|]', text)

print(result)

Expected output:

['apple', 'banana', 'orange', 'grape']

Example 3: Limit the Number of Splits

Example

import re

text = "a:b:c:d:e"

# Split at most 2 times
result = re.split(r':', text, maxsplit=2)

print(result)

Expected output:

['a', 'b', 'c:d:e']

Example 4: Split by Whitespace Characters

Example

import re

text = "Python\tJava\nC++\rRuby"

# Split by any whitespace character
result = re.split(r'\s+', text)

print(result)

Expected output:

['Python', 'Java', 'C++', 'Ruby']

Example 5: Keep the Delimiters

Example

import re

text = "a1b2c3"

# Use a capturing group to keep the delimiters
result = re.split(r'(\d)', text)

print(result)

Expected output:

['a', '1', 'b', '2', 'c', '3', '']

Python re Module

Other Extensions