why doesnt the while loop run?

[wavic]

>>> first = int(input())
5                      # I give an input that can be turned to an integer.
>>> first = int(input())
rock                   # Here the 'rock' word can't be turned to an integer of course so I get an error.
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ValueError: invalid literal for int() with base 10: 'rock'

If you want to map an integer to a word you can use a dictionary.

first = lower(input("rock paper scissors?: "))   # converting the input to lower case letters so you can used it as a key in the dict bellow
second = lower(input("rock paper scissors?: ")) 

r_p_s = {'rock': 5, 'paper': 10, 'scissors': 15}

while r_p_s['rock']:
    etc.