So input() in python 3 returns a string?

it prints them ontop of eachother, because at the end of each print() in the loop, print() automatically prints a newline, to get rid of this just go print('*', end='')

First of all, you don't have to do int(input()) because input() returns a number anyway.

And you should start with better explaining the rest of the problem

You might have to add the PyGame directory, or the python directory to the systems PATH variable, just google "Windows PATH variable" and you should be able to find out how.
You would just add the...