John Machin wrote:
Stephen Thorne wrote:
.def toNumber2(s):
. items = s.replace(',', '').split()
. numbers = [translation.get(item.strip(), -1) for item in items if
item.strip()]
. stack = [0]
. for num in numbers:
. if num == -1:
. raise ValueError("Invalid string '%s'" % (s,))
. if num >= 100:
. stack[-1] *= num
. if num >= 1000:
. stack.append(0)
. else:
. stack[-1] += num
. return sum(stack)
Can I play too?
Let's replace the top with some little bit of error handling:
def toNumber3(text):
s = text.replace(',', '').replace('-', '')# for twenty-three
items = s.split()
try:
numbers = [translation[item] for item in items]
except KeyError, e:
raise ValueError, "Invalid element %r in string %r" % (
e.args[0], text)
stack = [0]
for num in numbers:
if num >= 100:
stack[-1] *= num
if num >= 1000:
stack.append(0)
else:
stack[-1] += num
return sum(stack)
--Scott David Daniels
[EMAIL PROTECTED]
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