It mainly explains the basic knowledge, programming and application of Python language, and provides a large number of programming examples for corresponding concepts, which has high reference and application value. Python is an open source scripting language that places special emphasis on development speed and code clarity. It can be used to develop a variety of programs, from simple scripting tasks to complex, object-oriented applications. Python is also regarded as an excellent language that is most suitable for entry-level programmers to master because it is free, object-oriented, highly extensible and enforces strict coding standards.