Python: difference between ValueError and Exception?

Question

I am trying to understand what is a difference between raising a ValueError and an Exception. I have tried both in the same code (even in the same branch) and the result was

Answer 1

You said it, ValueError is a specific Exception. A short example :

try:
    print int("hello world")
except ValueError:
    print "A short description for ValueError"

If you change "hello world" with an int, print int(42), you will not raise the exception.

You can see doc about exceptions here.