Python Introduction.ppt
- 2. Overview • Python is a general-purpose interpreted, interactive, object-oriented and high-level programming language. • Python was created by Guido van Rossum in the late eighties and early nineties. • Like Perl, Python source code is also now available under the GNU General Public License (GPL).
- 3. Features • Python is Interpreted: This means that it is processed at runtime by the interpreter and you do not need to compile your program before executing it. This is similar to PERL and PHP. • Python is Interactive: This means that you can actually sit at a Python prompt and interact with the interpreter directly to write your programs. • Python is Object-Oriented: This means that Python supports Object-Oriented style or technique of programming that encapsulates code within objects.
- 4. History of Python • Python was developed by Guido van Rossum in the late eighties and early nineties at the National Research Institute for Mathematics and Computer Science in the Netherlands. • Python is derived from many other languages, including ABC, Modula-3, C, C++, Algol-68, SmallTalk and Unix shell and other scripting languages. • Python is copyrighted. Like Perl, Python source code is now available under the GNU General Public License (GPL).
- 5. Python Features 1 • Easy-to-learn: Python has relatively few keywords, simple structure, and a clearly defined syntax. This allows the student to pick up the language in a relatively short period of time. • Easy-to-read: Python code is much more clearly defined and visible to the eyes. • Easy-to-maintain: Python's success is that its source code is fairly easy-to-maintain. • A broad standard library: One of Python's greatest strengths is the bulk of the library is very portable and cross-platform compatible on UNIX, Windows and Macintosh.
- 6. Python Features 2 • Interactive Mode: Support for an interactive mode in which you can enter results from a terminal right to the language, allowing interactive testing and debugging of snippets of code. • Portable: Python can run on a wide variety of hardware platforms and has the same interface on all platforms. • Extendable: You can add low-level modules to the Python interpreter. These modules enable programmers to add to or customize their tools to be more efficient. • Databases: Python provides interfaces to all major commercial databases.
- 7. Python Features 3 • GUI Programming: Python supports GUI applications that can be created and ported to many system calls, libraries and windows systems, such as Windows MFC, Macintosh and the X Window system of Unix. • Scalable: Python provides a better structure and support for large programs than shell scripting.
- 8. Other features • Apart from the previously mentioned features, Python has a big list of good features, few are listed below: • Support for functional and structured programming methods as well as OOP. • It can be used as a scripting language or can be compiled to byte-code for building large applications. • Very high-level dynamic data types and supports dynamic type checking. • Supports automatic garbage collection. • It can be easily integrated with C, C++, COM, ActiveX, CORBA and Java.