Answer 1

If you want to get the value of an indexed character in a string change
str(x).index(str(0)) == str(y).index(str(0)):

to
x = 123
y = 567
if str(x)[0] == str(y)[0]:

# there are a number of other issues preventing your code running.
# feel free to experiment with the example below to learn a bit more
# about your options to develop your code.

https://code.sololearn.com/cY6lx0cet068/#py