[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"
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