part iitalking the talk seeing variables as storage boxes when working with applicationsyou store information in variables variable is kind of storage box whenever you want to work with the informationyou access it using the variable if you have new information you want to storeyou put it in variable changing information means accessing the variable first and then storing the new value in the variable just as you store things in boxes in the real worldso you store things in variables ( kind of storage boxwhen working with applications computers are actually pretty tidy each variable stores just one piece of information using this technique makes it easy to find the particular piece of information you need -unlike in your closetwhere things from ancient egypt could be hidden even though the examples you work with in previous don' use variablesmost applications rely heavily on variables to make working with information easier using the right box to store the data people tend to store things in the wrong sort of box for exampleyou might find pair of shoes in garment bag and supply of pens in shoebox howeverpython likes to be neat as resultyou find numbers stored in one sort of variable and text stored in an entirely different kind of variable yesyou use variables in both casesbut the variable is designed to store particular kind of information using specialized variables makes it possible to work with the information inside in particular ways you don' need to worry about the details just yet -just keep in mind that each kind of information is stored in special kind of variable python uses specialized variables to store information to make things easy for the programmer and to ensure that the information remains safe howevercomputers don' actually know about information types all that the computer knows about are and swhich is the absence or presence of voltage at higher levelcomputers do work with numbersbut that' the extent of what computers do numberslettersdatestimesand any other kind of information you can think about all come down to and in the computer system for examplethe letter is actually stored as or the number the computer has no concept of the letter or of date such as