python - 使用嵌套循环在 while 循环中显示特定值？

Question

我有一个初始值，它每年以一定百分比 (5.5%) 增长。当初始值比原始值大 2、3 和 4 倍时，我的程序需要仅使用 while 循环打印出年份。到目前为止，我正在使用三个 while 循环来查找初始值何时比原始值大 2、3 和 4 倍，但到目前为止它可以工作，但它看起来确实是重复的。这是我目前所拥有的:

anum 123.45    #initial value
anum2 = initial * 2    #supposedly the numbers to indicate when the initial value has doubled, tripled, quadrupled etc.
anum3 = initial * 3
anum4 = initial * 4
initialYear = 2017
year = initialYear    #year counter


while anum <= anum2:     #make the loop stop before going further than two times greater than initial value
    growth = anum * 0.055
    anum = growth + anum
    year += 1
print("Overall points will be 2 times 2017 points in {:d} years ({:d}).".format\
  (year - 2017, year))

while anum <= anum3:
    growth = anum * 0.055
    anum = growth + anum
    year += 1
print("Overall points will be 3 times 2017 points in {:d} years ({:d}).".format\
  (year - 2017, year))

while anum <= anum4:
    growth = anum * 0.055
    anum = growth + anum
    year += 1
print("Overall points will be 4 times 2017 points in {:d} years ({:d}).".format\
  (year - 2017, year))

有没有一种方法可以让这个过程使用嵌套的 while 循环来减少它的整体重复性？

非常感谢任何帮助!

Answer 1

有一种方法可以使用嵌套循环来做到这一点。

我只是 python 的初学者，但这可能有用:

anum = 123.45
multiplier = 2


while multiplier < 5:
        year = initialYear
        for i in range(multiplier):
                growth = anum * 0.055
                anum = growth + anum
                year += 1
        print("multiplier =", multiplier)
        multiplier += 1

希望对您有所帮助!