python lambda如何操作元组

Question

    26    valid = lambda (a, bid):bid >= reserve
     27   valid_bids = filter(valid, bids)

    29    rev_cmp_bids = lambda (a1, b1), (a2, b2): cmp(b2, b1)

报错：tuple parameter unpacking is not supported in Python 3：26
报错：tuple parameter unpacking is not supported in Python 3:29
怎么解决

Answer 1

有几个元组就传几个参数，然后在函数体里再把参数看作元组来处理，你这不是lambda传参数的方式。
比如：
fun = lambda x, y: list(zip(x, y))
a = 1, 3
b = 2, 4
res = fun(a, b)
print(res)