Find common factor to convert list of floats to list of integers

Question

I have a list of floats which comes from some other function. What I know is that in ideal world there exist a common factor which can be used to multiply each term to obtain li

Answer 1

The brute force solution. Still looking for something more universal...

def find_int(arr):
    test = False
    epsilon = 1e-15
    maxint = 1000
    for i in range(2, maxint, 1):
        for item in arr:
            if abs(i*item-round(i*item)) < epsilon:
                test = True
            else:
                test = False
                break
        if test:
            print i
            return [int(round(i*item)) for item in arr]
    print "Could not find one"
    return arr