format a number for output

[abcd]

if i have a number, say the size of a file, is there an easy way to
output it so that it includes commas?

for example:

1890284

would be:

1,890,284

I am looking for something builtin to python, not a third party lib.

thanks

[Marc 'BlackJack' Rintsch]

In <11**********************@i3g2000cwc.googlegroups. com>, abcd wrote:

if i have a number, say the size of a file, is there an easy way to
output it so that it includes commas?

for example:

1890284

would be:

1,890,284

I think this comes close:

In [23]: import locale

In [24]: locale.setlocale(locale.LC_ALL, '')
Out[24]: 'en_US.UTF-8'

In [25]: locale.format('%d', 1890284, True)
Out[25]: '1,890,284'

It's not always commas but whatever character is used to group thousands
in the active locale.

Ciao,
Marc 'BlackJack' Rintsch

[BartlebyScrivener]

abcd wrote:

if i have a number, say the size of a file, is there an easy way to
output it so that it includes commas?

for example:

1890284

would be:

1,890,284

see also this thread:

http://tinyurl.com/qf6ew

rd

[Paul Rubin]

"abcd" <co*******@gmail.comwrites:

1890284

would be:

1,890,284

"To iterate is human; to recurse, divine":

def commafy(n):
if n < 0: return '-' + commafy(-n)
if n >= 1000: return '%s,%03d' % (commafy(n//1000), n % 1000)
return '%s'% n

I don't like the locale solution because of how messy locales are.

[BartlebyScrivener]

Paul Rubin wrote:

"To iterate is human; to recurse, divine":

def commafy(n):
if n < 0: return '-' + commafy(-n)
if n >= 1000: return '%s,%03d' % (commafy(n//1000), n % 1000)
return '%s'% n

I don't like the locale solution because of how messy locales are.

That's a keeper!

Thanks!

rd