How to convert given input into list in Python?

Judith 156 Published: 09/11/2024

How to convert given input into list in Python?

I apologize for the misunderstanding earlier! I'd be happy to provide an answer in English.

Converting a string input into a list in Python can be achieved using various methods, including:

split() method: You can use the split() method to separate the input string into a list based on a specific delimiter. For example: 
input_string = "apple,banana,cherry"

fruit_list = input_string.split(",")


print(fruit_list)  # Output: ['apple', 'banana', 'cherry']

In this example, the split() method separates the input string into a list using the comma (,) as the delimiter.

list() constructor: You can also use the list() constructor to convert an iterable (like a tuple or a generator) into a list: 
input_string = "apple,banana,cherry"

fruit_list = list(input_string.split(","))


print(fruit_list)  # Output: ['apple', 'banana', 'cherry']

This method is similar to the split() method, but it requires an iterable as input.

[ ] comprehension: You can use a list comprehension to convert the input string into a list: 
input_string = "apple,banana,cherry"

fruit_list = [x.strip() for x in input_string.split(",")]


print(fruit_list)  # Output: ['apple', 'banana', 'cherry']

This method is useful when you need to perform additional processing on each element of the list (like stripping whitespace characters).

readlines() and strip(): If you're reading data from a file or a stream, you can use the readlines() method to read the entire file into a list, then use the strip() method to remove any unnecessary whitespace characters: 
input_file = open("fruit.txt", "r")

fruit_list = [line.strip() for line in input_file.readlines()]


print(fruit_list)  # Output: ['apple', 'banana', 'cherry']


input_file.close()

This method is useful when you're working with large datasets or files.

In general, the choice of method depends on the specific requirements of your program and the structure of your data. I hope this helps!

How to put inputs into a list in Python?

In Python, you can put inputs into a list by using various methods such as the input() function, slicing, and list comprehensions. Here are some ways to do it:

Using the input() Function: The most basic way is to use the input() function, which reads input from the user and returns it as a string. You can append this input to your list using the append() method or list comprehension. 
user_input = input("Enter something: ")

my_list = [user_input]


print(my_list)

This code will prompt the user to enter some text, which is then stored in the user_input variable. The my_list variable is initialized with an empty list and then has the user_input string appended to it.

Using Slicing: Another way is to use slicing. For example, you can take multiple inputs from the user using the input() function and store them in a list by slicing: 
my_list = []

for i in range(3):


my_list.append(input(f"Enter {i+1} thing: "))


print(my_list)

This code will ask the user to enter three items, which are then stored in the my_list variable.

Using List Comprehensions: A more Pythonic way is to use list comprehensions: 
my_list = [input(f"Enter something: ") for _ in range(3)]

print(my_list)

This code does exactly the same thing as the previous one, but with less code.

Using the map() Function: You can also map a function to each input: 
def get_input():

return input("Enter something: ")


my_list = list(map(get_input, range(3)))


print(my_list)

This code defines a get_input function that gets an input from the user and then uses the map() function to apply this function to three inputs. The result is stored in the my_list variable.

Using the itertools Module: If you want to get multiple inputs at once, you can use the itertools module: 
import itertools

my_list = list(itertools.islice(input("Enter something (space separated): ").split(), 3))


print(my_list)

This code asks the user to enter three items space-separated and then splits this input into a list using the split() function. The first three elements of this list are then stored in the my_list variable.

These are some ways you can put inputs into a list in Python. You can choose the one that best fits your needs, depending on how complex your program is and what kind of data you're working with.

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