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Some examples:

>>> nprint(9876543210)
'9 876 543 210'
>>> nprint(987654321, period=1, delimiter=",")
'9,8,7,6,5,4,3,2,1,0'
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def nprint(number, period=3, delimiter=" "):
    assert isinstance(number, (int, long)), "only integers are allowed"
    if number >= 0:
        sign = ""
    else:
        sign = "-"
        number = -number
    parts = []
    d = 10 ** period
    while number >= d:
        number, m = divmod(number, d)
        parts.insert(0, "%0*d" % (period, m))
    parts.insert(0, str(number))
    return sign + delimiter.join(parts)

2 comments

Scott Kirkwood 17 years, 3 months ago  # | flag

Problems with negative numbers and floating point values. For example:

>>> nprint(1234.567)
'1.0 234'
>>> nprint(-1234)
'-1234'
Dmitry Vasiliev (author) 17 years, 3 months ago  # | flag

Thanks! But there is no correct way for printing floating point values so now only integers are allowed.

Created by Dmitry Vasiliev on Thu, 26 Aug 2004 (PSF)
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