On Aug 12, 2007, at 10:10 AM, Jeff Johnson wrote:
> This is my approach to the problem presented. I would have used
> arrays in
> FoxPro and lists seem to provide the same functionality (and more).
>
> How would I concatenate the "s" or "ies" at the end of the following
> statement"
>
> print str(givetocustomer[lni]) + ' ' + money[lni]
Generally you would use string formatting to do this. This is a
Python skill that comes in extremely handy. It is also much more
efficient, since it doesn't create several separate string objects,
and then a new object as each piece is concatenated. Remember, in
Python strings are immutable, so anything that "modifies" a string
actually has to create an entirely new object.
Your example could be written as:
print "%s %s" % (givetocustomer[lni]), money[lni])
Note that you don't have to explicitly change the 'givetocustomer'
value to a string; that's done by the formatting. You also have an un-
Pythonic loop; it would be better written (without the Hungarian
notation, too!):
for pos, denom in denominations:
# floor division yields no decimals and no rounding
givetocustomer[pos] = change // denom
# modulus returns remainder
change = change % denom
if givetocustomer[pos] > 0:
if givetocustomer[pos] > 1:
print str(givetocustomer[pos]) + ' ' +
moneys[pos]
else:
print str(givetocustomer[pos]) + ' ' +
money[pos]
-- Ed Leafe
-- http://leafe.com
-- http://dabodev.com
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