Force Python calculation in double -

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this question has answer here:

i want print double in python. doesn't work, , don't know why.

my code:

test = 3000 / (1500 * 2000) print str(test)

i 0 , not 0.001 if following:

test = 3000 / (1500 * 2000) print '%.10f' % test

i 0.000000000 , not 0.001.

how tell python should double?

in python 2.x need convert @ least 1 of operands float, integer division results in truncated output in python 2.x: 

>>> 3000 / (1500 * 2000) 0 >>> 3000.0 / (1500 * 2000) # or use float(3000) 0.001 >>> float(3000) / (1500 * 2000) 0.001

or can import division of python 3.x in python 2.x, integer division results in true division:

>>> __future__ import division >>> 3000.0 / (1500 * 2000) 0.001

note affect division in whole module.


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