Raising exceptions when an exception is already present in Python 3

Question

What happens to my first exception (A) when the second (B) is raised in the following code?

class A(Exception): pass
class B(Except         


        

Answer 1

1. It got thrown out.
2. Only one exception can be "active" at a time per thread.
3. You can't, unless you encapsulate the earlier exception in the later exception somehow.