IndexError: string index out of range - how to fix?

Question

Python

I tried to make a program that converts text from Cyrillic to Latin. Moreover, the letter combination "kv" must be converted to "qu".
"kv", of course, is converted to "qu", but if you enter just "k" instead of "kv", then instead of "k" the program gives an error "IndexError: string index out of range" on line 6: if q == "к" and qw[i+1] == "в":
Please help. I am attaching the code below:

qwerty = {"к": "k", "в": "v", "а": "a"}
qw = input("введи букву/слово")
i = 0
q = qw[i]
while i<len(qw):
    if q == "к" and qw[i+1] == "в":
        print("qu")
        i += 2
    else:
        q = qw[i]
        print(qwerty.get(q))
        i += 1

Answer 1

Modify your condition in which the error occurs, as follows:

if q == "к" and and len(qw)>1 and qw[i+1] == "в":
  #ваш код ниже