Split String into List of characters in Python

Python | Split string in groups of n consecutive characters

Last Updated : 23 Mar, 2023

Given a string (be it either string of numbers or characters), write a Python program to split the string by every n^th character.

Examples:

Input : str = "Geeksforgeeks", n = 3
Output : ['Gee', 'ksf', 'org', 'eek', 's']

Input : str = "1234567891234567", n = 4
Output : [1234, 5678, 9123, 4567]

Method #1: Using list comprehension

Python3

# Python code to split string
# by every 3rd number
 
# String initialization
string = "Geeksforgeeks"
 
# Defining splitting point
n = 3
 
# Using list comprehension
out = [(string[i:i+n]) for i in range(0, len(string), n)]
 
# Printing output
print(out)

Method #2: Using zip_longest

Python3

# Python code to split string of number
# and character into every 4th number
 
# Importing
from itertools import zip_longest
 
# Group function using zip_longest to split
def group(n, iterable, fillvalue=None):
    args = [iter(iterable)] * n
    return zip_longest(fillvalue=fillvalue, *args)
 
# String initialization
str = '123GeeksForGeeks4567'
 
# Split point
n=4
 
# list of separated string
out_string = [''.join(lis) for lis in group(n, str, '')]
 
# Output list initialization
out_no = []
 
# Converting list of string into list of integer
for a in out_string:
    out_no.append(a)
 
# Printing list
print(out_no)

Output

['123G', 'eeks', 'ForG', 'eeks', '4567']

Method 3: Using a for loop and string slicing.

Initialize an empty list to store the substrings.
Define the splitting point, i.e., n=3.
Create a for loop to iterate over the string.
In each iteration, append the substring to the list using string slicing.
Print the output list.

Python3

# Python code to split string
# by every 3rd number
 
# String initialization
string = "Geeksforgeeks"
 
# Defining splitting point
n = 3
 
# Using for loop and string slicing
out = []
for i in range(0, len(string), n):
    out.append(string[i:i+n])
 
# Printing output
print(out)

Output

['Gee', 'ksf', 'org', 'eek', 's']

Time complexity: O(n), where n is the length of the input string.
Auxiliary space: O(n), as we are storing each substring in a list.

Split String into List of characters in Python

everythingispossible

Improve

Article Tags :

Practice Tags :

python

Similar Reads

Python - Custom Consecutive character repetition in String

Given a String, repeat characters consecutively by number mapped in dictionary. Input : test_str = 'Geeks4Geeks', test_dict = {"G" : 3, "e" : 1, "4" : 3, "k" : 5, "s" : 3} Output : GGGeekkkkksss444GGGeekkkkksss Explanation : Each letter repeated as per value in dictionary.Input : test_str = 'Geeks4G

Split String into List of characters in Python

We are given a string and our task is to split this string into a list of its individual characters, this can happen when we want to analyze or manipulate each character separately. For example, if we have a string like this: 'gfg' then the output will be ['g', 'f', 'g']. Using ListThe simplest way

Python - Consecutive Repetition of Characters

Sometimes, while working with character lists we can have a problem in which we need to perform consecutive repetition of characters. This can have applications in many domains. Let us discuss certain ways in which this task can be performed.Â Method #1: Using list comprehensionÂ This is one of the

Python - Split String of list on K character

In this article, we will explore various methods to split string of list on K character in Python. The simplest way to do is by using a loop and split(). Using Loop and split()In this method, we'll iterate through each word in the list using for loop and split it based on given K character using spl

Python - Group list by first character of string

Sometimes, we have a use case in which we need to perform the grouping of strings by various factors, like first letter or any other factor. These types of problems are typical to database queries and hence can occur in web development while programming. This article focuses on one such grouping by

Split string on Kth Occurrence of Character - Python

The task is to write Python program to split a given string into two parts at the Káµ—Ê° occurrence of a specified character. If the character occurs fewer than K times return the entire string as the first part and an empty string as the second part. For example, in the string "a,b,c,d,e,f", splitting

Splitting String to List of Characters - Python

The task of splitting a string into a list of characters in Python involves breaking down a string into its individual components, where each character becomes an element in a list. For example, given the string s = "GeeksforGeeks", the task is to split the string, resulting in a list like this: ['G

Splitting String to List of Characters - Python

We are given a string, and our task is to split it into a list where each element is an individual character. For example, if the input string is "hello", the output should be ['h', 'e', 'l', 'l', 'o']. Let's discuss various ways to do this in Python. Using list()The simplest way to split a string i

Get Last N characters of a string - Python

We are given a string and our task is to extract the last N characters from it. For example, if we have a string s = "geeks" and n = 2, then the output will be "ks". Let's explore the most efficient methods to achieve this in Python. Using String Slicing String slicing is the fastest and most straig

Consecutive characters frequency - Python

This problem involves identifying characters that appear consecutively and counting how many times they appear together. Here, we will explore different methods to calculate the frequency of consecutive characters in a string. Using regular expressionsWe can use the re module to efficiently count co