def vare(x1, x2, ddof=0, axis=0):
 x1 = np.asanyarray(x1)
 x2 = np.asanyarray(x2)
 return np.var((x1 - x2), ddof=ddof, axis=axis)

def vare ( x1 , x2 , ddof = 0 , axis = 0 ) : x1 = np . asanyarray ( x1 ) x2 = np . asanyarray ( x2 ) return np . var ( ( x1 - x2 ) , ddof = ddof , axis = axis )
variance of error parameters x1 .