In the previous chapter you learned about file handling. You learned to open a file in different modes, read its contents, update existing content, delete content, append new content, and make a copy. You learned to read files sequentially as well as randomly. Besides this, you also learned to create binary files, pickle and unpickle objects, and implement exception handling.
The applications that you have created so far were console-based applications. From now on you will be learning to develop graphical user interface (GUI) applications in Python through PyQt. This chapter covers the following:
Introduction to Qt toolkit and PyQt
Window and dialogs
Creating GUI Application through coding
Using Qt Designer