我有办法重写代码吗？，我似乎无法正确执行，我似乎无法正确获取输入

Question

I have to edit the code i previously wrote to make it work with a input, I will attach the problem. I can not seem to get it to work. it has to be some sort of input,

string =" "

reversed_string = string[::-1]

result_string = " ".join(string)

for a in range (0 ,3):
   result_string += chr(ord('a')+a)

for a in range(0 , 2)[::-1]:
   result_string += chr(ord('a')+a)

print result_string

Answer 1

string =" "

add this to input from keyboard

input( 'type a letter from a to z')

Answer 2

This is the shortest I could make the answer

character = 97
char_list = []
con = True
a = 0
for interger in range(26):
    char = chr(character)
    char_list.append(char)
    character = character+1
get_char = input("Enter a letter from a-z")
while con == True:
    if get_char == char_list[a]:
        b = char_list[:a+1]
        char_list.reverse()
        print(b+char_list[-a:])
        con = False
    else:
        a = a+1