While循環改變變量

Question

我需要在一輪循環后更改變量中的文本。 就像第一輪循環 a="A"，第二輪循環 a="B"。

a = ("A")
a1 = ("B")
a2 = ("C")
a3 = ("D")
a4 = ("F")

i = 0
while i < 5:
    print(a)
    a += 1
    i += 1

Answer 1

將值放入數組並訪問這些值：

a = ['A', 'B', 'C', 'D', 'E']

i = 0
while i<5:
    print(a[i])
    i += 1

Answer 2

a = 'A'

for i in range(5):
     print(a)
     a = chr(ord(a) + 1)

Answer 3

將 a 加一（在 a += 1 行）將增加變量的內容，而不是更改名稱。 您應該改為使用類似的數組

a = ['A', 'B', 'C', 'D', 'E']

然后迭代例如通過

ans = a[i]
print(ans)

Answer 4

您可以在此類任務中使用列表：

a = "A"
a1 = "B"
a2 = "C"
a3 = "D"
a4 = "F"

values = [a, a1, a2, a3, a4] # This is the list of values that you could address by their index

i = 0
while i < len(values): # iterate while i is less than the amount of values
    print(values[i])
    i += 1

在此處閱讀有關列表的更多信息