Print Numbers In Terms Of Engineering Units In Python

Possible Duplicate: Print number in engineering format How do I print numbers in scientific notation with powers that are multiples of 3? For example: 1.5e4 --> 15e3 1.2

Solution 1:

It appears there isn't such a feature yet (at least in Python 2.7), see: http://bugs.python.org/issue8060 On the page http://bytes.com/topic/python/answers/616948-string-formatting-engineering-notation I found the following solution (which I personally don't like that much, but seems to work):

import mathfor exponent in xrange(-10, 11):
    flt = 1.23 * math.pow(10, exponent)
    l = math.log10(flt)
    if l < 0:
        l = l - 3
    p3 = int(l / 3) * 3
    multiplier = flt / pow(10, p3)
    print'%e =%fe%d' % (flt, multiplier, p3)

Just adapt it according to your needs.

EDIT: Please look here, too Print number in engineering format