Having such a data type as strings, you may reach an instance where you want to change or modify a particular variable to perhaps change a character at a particular location, remove a character or maybe just add one or a few.

Coming from another programming language like C, you may assume the tendency to just do it using the string indexing as below.

String[0] = "k"

Though very intuitive, this does not work with python, because strings are a part of the data types that are immutable, and once created, cannot be modified.

Plus, the assignment operator (=) is not supported by strings.