Paul McNett
3/14/2008 5:42:00 PM
Eddie Corns wrote:
> ewanfisher@gmail.com writes:
>
>> I'm trying to find some code that will turn:
>
>> 100 -> 100
>> 1000 -> 1,000
>> 1000000 -> 1,000,000
>> -1000 -> -1,000
>
>> I know that can be done using a regular expression. In Perl I would do
>> something like:
>
>> sub thousand {
>> $number = reverse $_[0];
>> $number =~ s/(\d\d\d)(?=\d)(?!d*\.)/$1,/g;
>> return scalar reverse $number;
>> }
>
>> But I cannot find how to do this in Python.
>
> Look at the locale module. If you're producing the numbers yourself then they
> get printed in that format otherwise you can convert them to numbers first.
Specifically:
import locale
locale.setlocale(locale.LC_ALL, '')
for trial in (100, 1000, 1000000, -1000):
print trial, locale.format("%0f", trial, True)
If that results in no comma separators, then you may need to set the
locale specifically, such as:
>>> locale.setlocale(locale.LC_ALL, 'en_us')
'en_us'
>>> for trial in (100, 1000, 100000, -1000):
.... print trial, locale.format("%.0f", trial, True)
....
100 100
1000 1,000
100000 100,000
-1000 -1,000
Paul