How to change one character in a string in Python

Question

What is the fastest and the easiest way in Python to replace a character in a string like:

text = "lmlnopqr";
text[1] = "A";
           ^

Answer 1

Python strings are immutable, you change them by making a copy.
The easiest way to do what you want is probably.

text = "Z" + text[1:]

The text[1:] return the string in text from position 1 to the end, positions count from 0 so '1' is the second character.

You can use the same string slicing technique for any part of the string

text = text[:1] + "Z" + text[2:]