[Tutor] Control flow

[Gilbert Tsang]

Hi there, I have this logic that I cannot wrap my mind it:

def go_jogging():
    # go out and jog
    return

if ( bad_weather =='y' ):
    # ask user only if weather is bad.
    b = input ( "Weather is really bad, still go out to jog?[y/n]" )
    if b == 'y':
       go_jogging()
    else:
        # program should exit now
else:
    go_jogging()
  
####################################################
I can't get the program to stop processing further in the middle 
(apparently neither exit nor goto-label exist in Python, sorry for the 
C++ mindset) so I used exception to achieve what I want. I know in that 
example you could probably manipulate the logic so that program ends at 
the bottom of the if-tree. My question is then how to exit in the middle 
of a if-then-else tree? Thanks, Gilbert.

try:
    if ( bad_weather =='y' ):
        b = input ( "Weather is really bad, still go out to jog?[y/n]" )
        if b == 'y':
            go_jogging()
        else:
            raise Exception( "quit" )
    else:
        go_jogging()
except Exception, inst:
    print "Program exits now"