numpy阵列广播

如何使用Python的隐式循环编写以下循环?

def kl(myA, myB, a, b):
    lots of stuff that assumes all inputs are scalars

x, y = meshgrid(inclusive_arange(0.0, xsize, 0.10),\
                inclusive_arange(0.0, ysize, 0.10))

for j in range(x.shape[0]):
    for i in range(x.shape[1]):
        z[j, i] = kl(x[j, i], y[j, i])

我想做一些像

z = kl(x, y)

但这给了:

TypeError: only length-1 arrays can be converted to Python scalars