Python 3.x 使用FOR循环时限制打印

我想知道如何限制打印for循环的次数，到目前为止我什么都找不到。有什么帮助吗？ 提前谢谢

    def sixMulti(x,y): # Multiples of six
    nList = range(x,y)
    bySix = list(filter(lambda x: x%6==0, nList))
    for i in bySix:                             # square root function
        sqrt = list(map(lambda x: x**0.5, bySix))
    #round(sqrt, 3)
    #f"The number is {sqrt:.2f}"
    num = [ '%.2f' % e for e in sqrt]
    for i in range(0, len(num)):
        myList = ("Value is ", bySix[i], " and the square root is ", num[i])
        print(myList)
return bySix, num

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您的函数只打印一个列表：

>>> sixMulti(1, 47)
('Value is ', 6, ' and the square root is ', '2.45')
('Value is ', 12, ' and the square root is ', '3.46')
('Value is ', 18, ' and the square root is ', '4.24')
('Value is ', 24, ' and the square root is ', '4.90')
('Value is ', 30, ' and the square root is ', '5.48')
('Value is ', 36, ' and the square root is ', '6.00')
('Value is ', 42, ' and the square root is ', '6.48')

如果有x次输出，则调用此函数x次：）并在

您在每次迭代中都重新分配

sqrt

。只有

sqrt = list(map(lambda x: x**0.5, bySix))

---

足够了。

（“值是，'6'，平方根是，'2.45'）（“值是，'12'，平方根是，'3.46'）（“值是，'18'，平方根是，'4.24'）（“值是，'24'，平方根是，'4.90'）（“值是，'30'，平方根是，'5.48'）（“值是，'36'，平方根是，'6.00'））（‘值是’，42’，平方根是，’6.48’（‘值是’，6’，平方根是，’2.45’（‘值是’，12’，平方根是，’3.46’）…（[6,12,18,24,30,36,42]、‘2.45’、‘3.46’、‘4.24’、‘4.90’、‘5.48’、‘6.00’、‘6.48’）

sqrt = list(map(lambda x: x**0.5, bySix))