CODEWITHSUNDEEP
pythonfor-loop
Mumid
Mumid

Reputation: 21

For loop execution with list range

I am creating a list of positive integers from user input. The list will have 5 values. in case of a negative input, that value will not go to the list and issue an error massage and ask for the number again. The issue I am having with my code is the loop is dropping after 5 execution. whereas, I want it to keep running untill I am getting 5 positive inetegers.

lists = []

for i in range(5):
  s = int(input('Enter a number: '))
  if s >= 0:
    lists.append(s)
  else:
    print("Enter a valid number")

print(lists)

Upvotes: 0

Views: 199

Answers (2)

Mate Mrše
Mate Mrše

Reputation: 8444

Use the while loop instead of the for loop:

while len(lists)<5:
  s = int(input('Enter a number: '))
  if s >= 0:
    lists.append(s)
  else:
    print("Enter a valid number")

For loop is better suited for a known number of iterations, and while loop will check for a condition before it is executed.

Upvotes: 1

IoaTzimas
IoaTzimas

Reputation: 10624

You would better change it to a while loop, like below:

lists = []

while len(lists)<5:
    s = int(input('Enter a number: '))
    if int(s) >= 0:
        lists.append(int(s))
    else:
        print("Enter a valid number")

Upvotes: 5

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