What is the use of join() for a string rather than list or tuple method?

Answer

The functions and the methods that are used for the functionality uses the string module. This string module is represented as by using the join function in it:
", ".join(['1', '2', '4', '8', '16']) that results in "1, 2, 4, 8, 16"
The string variable that is used provide a fixed string literal to allow the names that are used to be bounded to the strings. join() is a string method that is used to provide a separator string to use the function over the sequence of the string and insert the function to an adjacent elements. The method uses any number of arguments that follow some rules that has to be put up for the sequence objects that the class defines for itself. The join is used for the string module that is used to join the string characters together as it is given in the program. The example is given as:
string.join(['1', '2', '4', '8', '16'], ", ")