def _lcm(a, b):
 if ((a == 0) or (b == 0)):
  return 0
 else:
  return (abs((a * b)) / gcd(a, b))

def _lcm ( a , b ) : if ( ( a == 0 ) or ( b == 0 ) ) : return 0 else : return ( abs ( ( a * b ) ) / gcd ( a , b ) )
least common multiple between 2 integers .