format float numbers : float format « Data Type « Python Tutorial

1. Python Tutorial
2. Data Type
3. float format

import math
for eachNum in (.2, .7, 1.2, 1.7, -.2, -.7, -1.2, -1.7):
    print "int(%.1f)\t%+.1f" % (eachNum, float(int(eachNum)))
    print "floor(%.1f)\t%+.1f" % (eachNum, math.floor(eachNum))
    print "round(%.1f)\t%+.1f" % (eachNum, round(eachNum))
    print '-' * 20