On 17/11/11 21:29, ADRIAN KELLY wrote:
amount=float()
You don;t need this line because you assign a value to amount
immediately you run main()
def main():
amount = float(raw_input('how much do you want to change:'))
while amount<50:
print 'Sorry, cannot convert an amount under €50 '
To get a while loop to terminate you must change something about the
test condition.
In this case the test value 50 is a constant so it needs to be amount
that changes. But you only print a message... You need to read a new amount.
else:
total=exchange(amount)
print 'Your exchange comes to: ',total
You don't really want/need the else: line.
It's not wrong but its more normal to see it done like this:
while <test-condition>
loop body here
next statement
with no explicit else.
In fact, thinking about it, I've never found a use for
the while/else construct, has anyone else?
--
Alan G
Author of the Learn to Program web site
http://www.alan-g.me.uk/
_______________________________________________
Tutor maillist - [email protected]
To unsubscribe or change subscription options:
http://mail.python.org/mailman/listinfo/tutor
