def measure(n):
 m1 = np.random.normal(size=n)
 m2 = np.random.normal(scale=0.5, size=n)
 return ((m1 + m2), (m1 - m2))

def measure ( n ) : m1 = np . random . normal ( size = n ) m2 = np . random . normal ( scale = 0.5 , size = n ) return ( ( m1 + m2 ) , ( m1 - m2 ) )
measurement model .