While loop change variables

I need to change the text in the variable after one round of the cycle.
Like first round of loop a="A", second round a="B".

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

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

>Solution :

Put the values in an array and access the values:

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

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