Split string to char python

How to split a string into individual characters in Python

In this tutorial, we will explore three different methods for splitting a string into individual characters in Python. We will start with a for loop, which allows us to iterate over the characters in a string and add them to a list. Then, we will look at using the list() function, which returns a list of individual characters from a string. Finally, we will explore using list comprehension, which is a concise way to create a list from an iterable, such as a string.

By the end of this tutorial, you will have a clear understanding of how to split a string into individual characters using Python.

How to split a string every character in Python

There are different ways to split a string every character in Python.

Method-1: split a string into individual characters in Python Using a for loop

Let us see an example of how to split a string into individual characters in Python using for loop.

One way to split a string into individual characters is to iterate over the string using a for loop and add each character to a list.

my_string = "United States of America" char_list = [] for char in my_string: char_list.append(char) print(char_list)

['U', 'n', 'i', 't', 'e', 'd', ' ', 'S', 't', 'a', 't', 'e', 's', ' ', 'o', 'f', ' ', 'A', 'm', 'e', 'r', 'i', 'c', 'a']

In this example, we create a string called my_string with the value “United States of America”. We then create an empty list called char_list . Next, we use a for loop to iterate over each character in my_string , adding each character to char_list using the append() method. Finally, we print out char_list to verify that it contains all the individual characters from the string.

Method-2: split a string into individual characters in Python using the list() function

Now, let us see, how to split a string into individual characters in Python using the list() function.

Another way to split a string into individual characters is to use the list() function. We pass the string as an argument to list() , and it returns a list where each character is a separate element.

my_string = "hello" char_list = list(my_string) print(char_list)

In this example, we pass my_string as an argument to the list() function, which returns a list where each character is a separate element. We store this list in the variable char_list and print it out to verify that it contains all the individual characters from the string.

Method-3: split a string into individual characters in Python using a list comprehension

Now, let us see, how to split a string into individual characters in Python using a list comprehension.

A third way to split a string into individual characters is to use list comprehension in Python. We can create a new list by iterating over the characters in the string and adding them to the list.

my_string = "hello" char_list = [char for char in my_string] print(char_list)

In this example, we use a list comprehension to iterate over the characters in the string my_string and add them to a new list called char_list . We then print out char_list to verify that it contains all the individual characters from the string in Python.

Conclusion

There are several ways to split a string into individual characters in Python, including using a for loop, the list() function, and list comprehension.

You may like the following Python string tutorials:

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Split String to Char Array in Python

1. Use the for Loop to Split a String Into Char Array in Python
2. Use the list() Function to Split a String Into Char Array in Python
3. Use the extend() Function to Split a String Into Char Array in Python
4. Use the unpack Method to Split a String Into Char Array in Python
5. Use the List Comprehension Method to Split a String Into Char Array in Python

This tutorial, we learn how to split a string into a list of characters in Python.

Use the for Loop to Split a String Into Char Array in Python

In this method, we use the for loop to iterate over the string and append each character to an empty list. See the following example code.

word = 'Sample' lst = []  for i in word:  lst.append(i)  print(lst) 

Use the list() Function to Split a String Into Char Array in Python

Typecasting refers to the process of converting a datatype to some other datatype. We can typecast a string to a list using the list() function which splits the string to a char array. For example,

word = 'Sample'  lst = list(word) print(lst) 

Use the extend() Function to Split a String Into Char Array in Python

The extend() function adds elements from an iterable object like a list, tuple, and more to the end of a given list. Refer to this article to know more about the difference between the extend() and append() functions.

Since a string is a collection of characters, we can use it with the extend() function to store each character at the end of a list. For example,

lst = [] word = 'Sample' lst.extend(word) print(lst) 

Use the unpack Method to Split a String Into Char Array in Python

The * operator can be used to perform unpacking operations on objects in Python. This method unpacks a string and stores its characters in a list, as shown below.

Use the List Comprehension Method to Split a String Into Char Array in Python

List Comprehension is an elegant way of creating lists in a single line of code. In the method shown below, we use the for loop to iterate over the list and store each element.

word = "Sample"  lst = [x for x in word]  print(lst) 

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Related Article — Python String

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Как разбить строку на символы в Python

Сейчас мы разберем, как в Python можно разбить строку на символы. В общем, все что нам нужно, это создать такую функцию (назовем ее, например, split() ), которая будет решать эту задачу. Если вы новичок в функциях, то можете ознакомиться с базовыми принципами их создания на нашем сайте.

Чтобы понять, о чем речь, возьмем конкретный пример. Допустим, у нас есть следующая строка: «Hdfs Tutorial». И мы хотим разбить ее на отдельные символы, используя язык Python. Давайте поищем способы, как лучше это сделать.

Вход: “Hdfs Tutorial” Результат: [‘H’, ‘d’, ‘f’, ‘s’, ‘ ‘, ‘T’, ‘u’, ‘t’, ‘o’, ‘r’, ‘i’, ‘a’, ‘l’]

1. Определяемая пользователем функция

Здесь я создам функцию под названием split() , которая принимает на вход один аргумент, например, нашу строку, и возвращает список всех символов, имеющихся в этой строке.

def split(s): return [char for char in s]

Сейчас мы создали собственную функцию под названием split() , принимающую один аргумент — строку, которую мы хотим разбить на символы.

Теперь нам надо задать строку, которую мы хотим разбить на символы.

Результат

Теперь просто вызовем нашу функцию, передав в нее только что определенную нами строку.

Результат

[‘H’, ‘d’, ‘f’, ‘s’, ‘ ‘, ‘T’, ‘u’, ‘t’, ‘o’, ‘r’, ‘i’, ‘a’, ‘l’]

Вот и все! Это простейший способ разбить строку на символы в языке Python. Однако, как это обычно бывает в Python, есть еще несколько способов сделать то же самое. И сейчас мы по-быстрому разберем пару таких примеров.

2. Функция list()

Мы можем использовать встроенную функцию list() , которая сделает ровно то же самое.

Резльтат

[‘H’, ‘d’, ‘f’, ‘s’, ‘ ‘, ‘T’, ‘u’, ‘t’, ‘o’, ‘r’, ‘i’, ‘a’, ‘l’]

3. Разбиение строки на символы с использованием цикла for

Также можно разбить строку на символы при помощи цикла for , который мы использовали в теле функции split() , не определяя самой функции. Этот способ рекомендован лишь для специального использования и, как правило, не подходит для промышленного применения.

s = 'Hdfs Tutorial' [c for c in s]

Результат

[‘H’, ‘d’, ‘f’, ‘s’, ‘ ‘, ‘T’, ‘u’, ‘t’, ‘o’, ‘r’, ‘i’, ‘a’, ‘l’]

Заключение

Это было очень краткое руководство о том, как разбить строку на символы в Python. Мы обсудили три простых способа, как это сделать. Лично я предпочитаю первый метод, так как он дает гораздо больше гибкости.

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Split string to char python

Last updated: Feb 19, 2023
Reading time · 4 min

# Table of Contents

# Split a String into a List of Characters in Python

Use the list() class to split a string into a list of characters, e.g. my_list = list(my_str) .

The list() class will convert the string into a list of characters.

Copied! 
my_str = 'bobby' my_list = list(my_str) # 👇️ ['b', 'o', 'b', 'b', 'y'] print(my_list) 

The list class takes an iterable and returns a list object.

When a string is passed to the class, it splits the string on each character and returns a list containing the characters.

# Split a String into a list of characters using a list comprehension

Copied! 
my_str = 'bobby' my_list = [letter for letter in my_str] # 👇️ ['b', 'o', 'b', 'b', 'y'] print(my_list) 

List comprehensions are used to perform some operation for every element, or select a subset of elements that meet a condition.

You can also filter letters out of the final list when using this approach.

Copied! 
my_str = 'b o b b y' my_list = [letter for letter in my_str if letter.strip()] # 👇️ ['b', 'o', 'b', 'b', 'y'] print(my_list) 

The string in the example has spaces.

Instead of getting list items that contain a space, we call the strip() method on each letter and see if the result is truthy.

The str.strip method returns a copy of the string with the leading and trailing whitespace removed.

If the string stores a space, it would get excluded from the final list.

# Split a String into a list of Characters using a for loop

You can also use a simple for loop to split a string into a list of characters.

Copied! 
my_str = 'bobby' my_list = [] for letter in my_str: my_list.append(letter) # 👇️ ['b', 'o', 'b', 'b', 'y'] print(my_list) 

We used a for loop to iterate over the string and use the append method to add each letter to the list.

The list.append() method adds an item to the end of the list.

The method returns None as it mutates the original list.

You can also conditionally add the letter to the list.

Copied! 
my_str = 'bobby' my_list = [] for letter in my_str: if letter.strip() != '': my_list.append(letter) # 👇️ ['b', 'o', 'b', 'b', 'y'] print(my_list) 

The string is only added to the list if it isn’t a space.

# Split a String into a List of Characters using iterable unpacking

You can also use the iterable unpacking * operator to split a string into a list of characters.

Copied! 
my_str = 'bobby' my_list = [*my_str] print(my_list) # 👉️ ['b', 'o', 'b', 'b', 'y'] 

Notice that we wrapped the string in a list before using iterable unpacking.

The * iterable unpacking operator enables us to unpack an iterable in function calls, in comprehensions and in generator expressions.

Copied! 
example = (*(1, 2), 3) # 👇️ (1, 2, 3) print(example) 

# Split a String into a List of Characters using extend

You can also use the list.extend() method to split a string into a list of characters.

Copied! 
my_str = 'bobby' my_list = [] my_list.extend(my_str) print(my_list) # 👉️ ['b', 'o', 'b', 'b', 'y'] 

The list.extend method takes an iterable and extends the list by appending all of the items from the iterable.

Copied! 
my_list = ['bobby'] my_list.extend(['hadz', '.', 'com']) print(my_list) # 👉️ ['bobby', 'hadz', '.', 'com'] 

The list.extend method returns None as it mutates the original list.

We can directly pass a string to the list.extend() method because strings are iterable.

Each character of the string gets added as a separate element to the list.

# Split a String into a List of Characters using map()

You can also use the map() function to split a string into a list of characters.

Copied! 
my_str = 'bobby' my_list = list(map(lambda char: char, my_str)) print(my_list) # 👉️ ['b', 'o', 'b', 'b', 'y'] 

Instead of passing the string directly to the list() class, we used the map() function to get a map object containing the characters of the string.

The map() function takes a function and an iterable as arguments and calls the function with each item of the iterable.

The lambda function we passed to map gets called with each character of the string and returns it.

The last step is to convert the map() object to a list.

# Additional Resources

You can learn more about the related topics by checking out the following tutorials:

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