Why I am getting output in this format?

Question

This code is supposed to give a single bracket but it is giving a double bracket.
https://code.sololearn.com/cKdRXbpjH0SD/?ref=app
https://code.sololearn.com/cKdRXbpjH0SD/?ref=app

Answer 1

Hi Martin!
That's because, you're appending entire list to a new list lst. You can do this to get a single bracket.

arr = []
lst = [2,4,7,9]
for i in range (0,4):
arr.append(lst[i])
print(arr)

Answer 2

Thanks python learner

Answer 3

#this is your code:
n = int(input())
arr = []
lst = [2,4,7,9]
for i in range (0,n):
arr.append(lst[i])
print(arr)

# corrected:
for i in range(n):
arr+=[lst[i]]
#or
#arr.append(lst[i])

#BUT Better and shorter:
arr = lst[:n]
print(arr)