Positive indexing in Python starts at zero and increases to the right. To slice with positive indexes, determine the position where your substring starts and ends within the original string.

str1= substring of a string which has to be replaced str2= substring of a string with which str1 has to be replaced count= number of times we need to replace , by default this value will be 1 Example: ...

Python's substring extraction with slicing is efficient and straightforward. For instance, if you have a string `text = "Hello, world!"`, you can extract `"world"` using `text [7:12]`.

It is possible to find part of a string by using a subString (a bit, or part, of a string) method. Remember that the first character in the string starts at reference 0. For example, select a ...