Today, I would like to show you how to split a string without removing the delimiter in Python by using the re.split(), list comprehension, the splitlines() and re.findall() functions. Please read the following article.
Split a string without removing the delimiter in Python
Use the re.split function
Example:
- Import the re module.
- Initialize a string of delimiters.
- Use the re.split() function with characters: () to store delimiters and letters.
\Wto find the delimiters in the string when splitting.
import re
myString = 'visit$learnshareit##website'
# Use the re.split() function
print('String after splitting and keeping the delimiters:', re.split('(\W)', myString))Output:
String after splitting and keeping the delimiters: ['visit', '$', 'learnshareit', '#', '', '#', 'website']Or you can use another regular expression like the following, which has the same result.
Example:
import re
myString = 'visit$learnshareit##website'
# Use the re.split() function
print('String after splitting and keeping the delimiters:', re.split('([^a-zA-Z0-9])', myString))Output:
String after splitting and keeping the delimiters: ['visit', '$', 'learnshareit', '#', '', '#', 'website']In the above example ([^a-zA-Z0-9]), it means: () stores the separator and letters. [ ] compares the set with the characters in the string. ^a-zA-Z0-9 matches any character that is not a letter or number.
Use list comprehension
Example:
- Initialize a string of delimiters.
- Use list comprehension to split the string and keep the delimiter.
myString = 'visit#learnshareit#website'
# Use list comprehension to split the string and keep the delimiter
print('String after splitting and keeping the delimiters:')
print([u for x in myString.split('#') for u in (x, '#')])Output:
String after splitting and keeping the delimiters:
['visit', '#', 'learnshareit', '#', 'website', '#']Use the splitlines() function
Syntax:
str.splitlines(num=string.count('\n'))
Example:
- Initializes a list of both strings and None.
- The splitlines() function will return a string with the newline character ‘\n’ if the delimiter needs to be displayed as a line break.
myString = """ Visit. learnshareit. website.""" # Use the splitlines() function to preserve newline characters '\n\ print(myString.splitlines(True))
Output:
['\n', 'Visit.\n', 'learnshareit.\n', 'website.']Use the re.findall function
Syntax:
re.findall(regex, string))
Parameters:
- regex: regular expression to search for digits.
- string: string you want the regular expression to search for.
The findall() function returns a list containing the pattern matches in the string. If not found, the function returns an empty list.
Example:
- Import the re module.
- Initialize a string of delimiters.
- Use the findall() function to split the string and keep the delimiter.
import re
myString = 'visit#learnshareit#website'
# Use the re.findall() function to split the string still retaining the delimiter
print('String after splitting and keeping the delimiters:', re.findall('[\D+\W]', myString))Output:
String after splitting and keeping the delimiters: ['v', 'i', 's', 'i', 't', '#', 'l', 'e', 'a', 'r', 'n', 's', 'h', 'a', 'r', 'e', 'i', 't', '#', 'w', 'e', 'b', 's', 'i', 't', 'e']Summary
The tutorial split a string without removing the delimiter in Python has ended. I think the best way for you is to use re.split() function.
Maybe you are interested:
- Split a string into text and number in Python
- Ways To Split A String By Tab In Python
- Split a string on the first occurrence in Python
My name is Jason Wilson, you can call me Jason. My major is information technology, and I am proficient in C++, Python, and Java. I hope my writings are useful to you while you study programming languages.
Name of the university: HHAU
Major: IT
Programming Languages: C++, Python, Java
