Built-in module to calculate the least common multiple

Question

I have a function that accepts 2 numbers and to find the least common multiple for those numbers, I will use loop here.

def lcm(x, y):

   """This function takes two

   integers and returns the L.C.M."""

   # Choose the greater number

   if x > y:

       greater = x

   else:

       greater = y

   while(True):

       if((greater % x == 0) and (greater % y == 0)):

           lcm = greater

           break

       greater += 1

   return lcm

In python, Is there any built-in module that does the same work instead of typing a custom function?

Answer 1

In the "math" library, we have the Greatest Common Division function. (For Python 3.4 or 2.7, it's covered in fractions instead.) And composing an LCM on top of a GCD is pretty inconsequential: 

def lcm(a, b):

    return abs(a*b) // math.gcd(a, b)

Or then again, in case you're utilizing NumPy, it's accompanied an lcm function for a long while now.

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