fi now that you've mastered the basic skills you need to write organized programs that are easy to useit' time to think about making your programs even more relevant and usable in this you'll learn to work with files so your programs can quickly analyze lots of data you'll learn to handle errors so your programs don' crash when they encounter unexpected situations you'll learn about exceptionswhich are special objects python creates to manage errors that arise while program is running you'll also learn about the json modulewhich allows you to save user data so it isn' lost when your program stops running learning to work with files and save data will make your programs easier for people to use users will be able to choose what data to enter and when to enter it people can run your programdo some workand then close the program and pick up where they left off later learning to handle exceptions will help you deal with situations in which files don' exist and deal with other problems that can cause your programs to crash this will make your programs more robust when they encounter bad datawhether