How to input list filled with int and strings

Question

Is it possible to ask the user to write a list as an input such as [1,2,'a','2'] with different data types without the use of any libraries?

Does this answer your question? [Get a list of numbers as input from the user](https://stackoverflow.com/questions/4663306/get-a-list-of-numbers-as-input-from-the-user) — IoaTzimas, Oct 13 '20 at 12:10

score 0 · Answer 1 · answered Oct 13 '20 at 12:12

0

You can use eval but you should understand the caveats. What if the user types in os.system("rm -rf .")?

In Python 2, input worked like this (and the "sane" input function was called raw_input).

answered Oct 13 '20 at 12:12

tripleee

score 0 · Answer 2 · answered Oct 13 '20 at 12:14

0

user = []
c = int(0)
while True:  
    userindent = user.append(input("Type"))
    c = c + 1 
    if c == 3:
        break
print(user)

Something like this?

answered Oct 13 '20 at 12:14

gerrel93

score 0 · Answer 3 · answered Oct 13 '20 at 16:37

You can use Python's inbuilt ast library's literal_eval to accept python data types as a string and convert them

>>> from ast import literal_eval
>>> user_input = input()
[1,2,'a','2']
>>> user_list = literal_eval(user_input)
>>> user_list
[1, 2, 'a', '2']

OR a simpler version would be

from ast import literal_eval
user_list = literal_eval(input())

3 Answers3