floats are inherently imprecise in pretty much every language
if you need exact precision use the Decimal class
from decimal import Decimal
print Decimal("0.3")
if you just need them to look pretty just use format strings when displaying
eg :
"%0.2f"%2.030000000000034
if you want to compare them use some threshold
if num1 - num2 < 1e-3 : print "Equal Enough For Me!"
**see abarnert's comments on thresholding ... this is a very simplified example for a more indepth explanation of epsilon thresholding one article I found is here http://www.cygnus-software.com/papers/comparingfloats/Comparing%20floating%20point%20numbers.htm
Additional Reading:
http://docs.oracle.com/cd/E19957-01/806-3568/ncg_goldberg.html (for a detailed explanation)
http://floating-point-gui.de/basic/ (basic tutorial for working with floats in general)
