# Run with python3!!!
# This demonstrates that Python has exception-handling
# with a finally block.
# Python also turns keyboard interrupts into exceptions.

def demo1():
    a=0

    while a == 0:
        try:
            s = input('enter a number: ')
            val = int(s)
        except ValueError:
            print("not a valid number")
            continue
        except KeyboardInterrupt: # Be careful with this. Don't take away your user's ability to Cntr-C out of a program!!!
            print( "do you really want to stop??" )
            continue 
        finally:
            print( "finally" )
        if val == 0:
            #break
            a=1

    print("terminating")

def demo2_helper():
    raise Exception( "hi" )

def demo2():
    try:
        demo2_helper()
    except Exception as e:
        print("demo 2 catching the error")
        print(e)
 
 
demo2()