The issue in your code now is that you are using t = input() which accepts input line by line, so the first time it just returns the first line , which is 2.

And then you are trying to loop over it , I think instead you want to loop that much times, so you should change the code to -

t=int(input())
for i in range(t):

Using range function would make the loop go that much amount of times, Hoepfully that is what you intended to do.

When using % symbol for string formatting, you have to give %d or %s , etc. There does not seem to be any %l .

Example -

print "Case %d: Yes\n"%i

This is... OK. Ideally, you would have separate exceptions for each reasonably distinct situation (e.g. one exception for all "the config file is malformed" errors, reuse FileNotFoundError in 3.x for "the config file doesn't exist", etc.). But this is one of the more innocuous forms of technical debt.

The downside is that if you ever do introduce those separate exceptions, they may need to subclass from RuntimeError for reasons of backwards compatibility. That's kind of ugly, but mostly harmless.