string formating float in python code example

Example 1: python format float

>>> x = 13.949999999999999999
>>> x
13.95
>>> g = float("{:.2f}".format(x))
>>> g
13.95
>>> x == g
True
>>> h = round(x, 2)
>>> h
13.95
>>> x == h
True

Example 2: python format numeric output

for x in numbers:
    print "{:10.4f}".format(x)
prints

   23.2300
    0.1233
    1.0000
    4.2230
 9887.2000