Dana row, items of which are any characters, how to calculate the amount of numbers in the line

Follow the code

STR1 = STR (INPUT ())
Print (STR1)
k = 0.
For Elem in Str1:
  IF Elem & GT; = "0" and Elem & Lt; = "9":
    k = k + 1
    Print (Elem)
Print ("k =", k)

Answer 1

You need to check whether it is possible to make a number from the symbol, this is done like this:

elem.isdigit ()

you need to find the amount and not the quantity:

k = k + 1

Change on:

k + = int (elem)

code should be:

STR1 = STR (INPUT ())
Print (STR1)
k = 0.
For Elem in Str1:
  IF Elem.isdigit ():
    K + = int (Elem)
    Print (Elem)
Print ("k =", k)

Answer 2

import re
a = input ('')
Digits = Re.Findall ("\ d", a)
IF Not Digits:
  Print ('numbers not found')
ELSE:
  Print (Eval ('+'. Join (Digits)))