On Fri, Nov 18, 2011 at 9:26 AM, Prasad, Ramit <ramit.pra...@jpmorgan.com>wrote:
> Forwarding to the list since I wasn't the only person who helped ;) > > From: ADRIAN KELLY [mailto:kellyadr...@hotmail.com] > Sent: Thursday, November 17, 2011 6:08 PM > To: Prasad, Ramit > Subject: RE: [Tutor] urgent help!! THANKS EVERYONE! > > Thanks for your help i just got it going my way below - but your way looks > easier and better! > thanks for all your help everyone. feel free to comment on my method - > its awkward but it works.......... <snip> > def main(): > amount=0 > amount = float(raw_input('how much do you want to change:')) > while amount<50: > print 'enter an amount over 50' > amount = float(raw_input('how much do you want to change:')) > else: > total=exchange(amount) > print 'Your exchange comes to: ',total > In these sorts of cases I actually prefer the recursive solution. And from a usability standpoint it's much nicer to warn the user ahead of time: def amount_over_50(): amount = float(raw_input("How much do you want to change (minimum $50)? Amount: $")) if amount < 50.0: print 'Please enter an amount greater than $50' return amount_over_50() return amount Then you can just do this: def main(): print 'Your total comes to', exchange(amount_over_50()) The chances of hitting the maximum recursion depth is pretty slim, unless your user manages to type in a wrong number about 1000 times ;) HTH, Wayne
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