strings unit structure string is sequence traversal with for loop string slices strings are immutable searching looping and counting string methods the in operator string comparison string operations summary questions references objectives to learn how to crate string in python to study looping and counting in python to write programs for creating string methods in python to understand various operators and string operation of python to learn the string traversal with for loop in python string is sequence there are numerous types of sequences in python strings are special type of sequence that can only store charactersand they have special notation strings are sequences of characters and are immutable string is sequence of characters we can access the characters one at time with the bracket operatorfood 'rotiletter food[ the second statement retrieves the character at index position one from the food variable and assigns it to the letter variable the expression