FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -One way to iterate over a string is to use for i in range(len(str)): . In this loop, the variable i receives the index so that each character can be accessed using str[i] .

Detailed explanation-2: -Loops can be used to traverse or process a string.

Detailed explanation-3: -You can traverse a string as a substring by using the Python slice operator ([]). It cuts off a substring from the original string and thus allows to iterate over it partially. To use this method, provide the starting and ending indices along with a step value and then traverse the string.

Detailed explanation-4: -Another way to iterate over a string is to use for item of str . The variable item receives the character directly so you do not have to use the index. If your code does not need the index value of each character, this loop format is even simpler.