Given a string, write a Python program to split the characters of the given string into a list using Python. In this article, we will explore various methods to split a string into a list of characters, allowing developers to manipulate and work with individual characters efficiently.
Input: geeks Output : ['g', 'e', 'e', 'k', 's'] Input: Word Output : ['W', 'o', 'r', 'd'] Explanation: In this, we are splitting the string into a list of characters in Python.
Python Split String in List Method
Below is the list of methods that we will use in this article:
- Using unpack(*) method
- Using a loop
- Using List Comprehension
- Using list() typecasting
- Using extend() function
- Using itertools
- Using List Slicing
Python Split String in List using unpack(*) method
The act of unpacking involves taking things out, specifically iterables like dictionaries, lists, and tuples.
Python3
string = "geeks"print([*string]) |
Output
['g', 'e', 'e', 'k', 's']
Time complexity: O(n), where n is the length of the input word.
Auxiliary space: O(n)
Python Split String in List using a loop
Here, we are splitting the letters using the native way using the loop and then we are appending it to a new list.
Python3
string = 'neveropen'lst = []for letter in string: lst.append(letter)print(lst) |
Output
['g', 'e', 'e', 'k', 's', 'f', 'o', 'r', 'g', 'e', 'e', 'k', 's']
Time complexity: O(n), where n is the length of the input word.
Auxiliary space: O(n)
Python Split String in List using List Comprehension
This approach uses list comprehension to convert each character into a list. Using the following syntax you can split the characters of a string into a list.
Python3
string = "Geeksforgeeks"letter = [x for x in string]print(letter) |
Output
['G', 'e', 'e', 'k', 's', 'f', 'o', 'r', 'g', 'e', 'e', 'k', 's']
Time complexity: O(n), where n is the length of the input word.
Auxiliary space: O(n)
Python Split String using a list() typecasting
Python provides direct typecasting of strings into a list using Python list().
Python3
def split(word): return list(word) # Driver codeword = 'geeks'print(split(word)) |
Output
['g', 'e', 'e', 'k', 's']
Time complexity: O(n), where n is the length of the input word.
Auxiliary space: O(n), where n is the length of the input word.
Python Split String in List using Extend() Function
Extend() iterates over its input, expanding the list, and adding each member.
Python3
string = 'Geeks@for'lst = []lst.extend(string)print(lst) |
Output
['G', 'e', 'e', 'k', 's', '@', 'f', 'o', 'r']
Time complexity: O(n), where n is the length of the string.
Auxiliary space: O(n), where n is the length of the string.
Python Split String using Itertools
In Python, you can split a string into a list of characters using the itertools module. You need to convert the string into an iterable sequence (e.g., a list, tuple, or string itself) of individual characters
Python3
import itertoolsstring = "Geeksforgeeks"letter = list(itertools.chain.from_iterable(string))print(letter) |
Output
['G', 'e', 'e', 'k', 's', 'f', 'o', 'r', 'g', 'e', 'e', 'k', 's']
The time complexity : O(n), where n is the length of the input string.
The auxiliary space : O(n), as the list created by itertools.chain.from_iterable has a size of n.
Python Split String in List using List Slicing
In Python, you can split a string into a list of characters using list slicing. List slicing is a technique that allows you to extract a portion of a list (or string) by specifying the start and end indices.
Python
string = 'Geeks@for'lst = []lst[:] = stringprint(lst) |
Output
['G', 'e', 'e', 'k', 's', '@', 'f', 'o', 'r']
Time complexity: O(N), where N is the length of the input string.
Auxiliary space: O(N), Because a new list of N size is created.
