floating point - python 2.7: round a float up to next even number -

i round float next number.

steps:

1) check if number odd or even

2) if odd, round next number

i have step 1 ready, function checks if give number or not:

def is_even(num):     if int(float(num) * 10) % 2 == 0:         return "true"     else:         return "false" 

but i'm struggling step 2....

any advice?

note: floats positive.

there no need step 1. divide value 2, round nearest integer, multiply 2 again:

import math  def round_up_to_even(f):     return math.ceil(f / 2.) * 2 

demo:

>>> import math >>> def round_up_to_even(f): ...     return math.ceil(f / 2.) * 2 ...  >>> round_up_to_even(1.25) 2 >>> round_up_to_even(3) 4 >>> round_up_to_even(2.25) 4