python - 模拟 for 循环迭代来自多个数组的所有可能选项

Question

是否可以加快从多个数组中搜索所有可能组合的速度？

out = []
for a1 in range(1, 10000):
   for a2 in range(1, 10000):
       for a3 in range(1, 10000):
           for a4 in range(1, 10000):
               for a5 in range(1, 10000):
                   for a6 in range(1, 10000):
                       for a7 in range(1, 10000):
                           out.append([a1, a2, a3, a4, a5, a6, a7])

标签： pythonfor-loop