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@author jackzhenguo
@desc 
@date 2019/5/5

85 product 案例

def product(*args, repeat=1):
    pools = [tuple(pool) for pool in args] * repeat
    result = [[]]
    for pool in pools:
        result = [x+[y] for x in result for y in pool]
    for prod in result:
        yield tuple(prod)

调用函数:

rtn = product('xyz', '12', repeat=3)
print(list(rtn))

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