Question

I am fairly new to programming and have been working on a program to count the number of times every value from 0-9 occurs in a string of numbers (this program must use a function and main function that calls it). If a user enters the numbers 123512378, I want it to tell me 1 occurs 2 times 2 occurs 2 times… 8 occurs 1 time etc. Right now I am trying to pass a string into a function then return a list with the number of occurrences in order. However mine just returns the empty list I generated at the start. Here is my code:

def countdigits(aString,Result):
  countValue=0
  while countValue>=9:
    Result[countValue]=(aString.count(str(countValue)))
    countValue=countValue+1
  return Result

def main():
  emptyList = 10 * [0]
  numbers=str(input("Pleas enter a string of numbers: "))
  print(countdigits(numbers,emptyList))

main()

Answer 1

Use while countValue<=9:. You used a >=.