insert thousands separators

[Nick Vargish]

Marcus Bergmann <marcus.bergmann at isst.fhg.de> writes:

> how can I insert thousands separators into an integer or a string,
> e.g. 1000000 to 1.000.000?

You may need to modify the following to match the "integer or string"
part of your request. commafy() here accepts and integer but returns a
string...

Nick

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#!/usr/bin/env python

#
# Algorithm from Bengt Richter
# Cleaned up a little by Nick Vargish
#

"""Return a string version of a value with commas every thousandth
place.

"""

def commafy(val):
    """Returns a string version of val with commas every thousandth
    place."""
    return val < 0 and '-' + commafy(abs(val)) \
           or val < 1000 and str(val) \
           or commafy(val / 1000) + ',' + commafy(val % 1000)

def _test_commafy():
    """Unit test for commafy() function."""
    for i in [ 1, 12, 123, 1234, 12345, 123456, 1234567, 12345678,
    123456789 ]:
        print "%12s  %12s" % (commafy(i), commafy(-i))

if __name__ == '__main__':
    _test_commafy()

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-- 
#include<stdio.h> /* SigMask 0.3 (sig.c) 19990429 PUBLIC DOMAIN "Compile Me" */
int main(c,v)char *v;{return !c?putchar(*v-1)&&main(0,v+ /* Tweaks welcomed. */
1):main(0,"Ojdl!Wbshjti!=obwAqbusjpu/ofu?\v\1");}  /* build: cc -o sig sig.c */