[Python] Built-in module to calculate the least common multiple

I am currently using a function that accepts two numbers and uses a loop to find the least common multiple of those numbers,

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


Is there a built-in module in Python that does it instead of writing a custom function?

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