Skip to main content

Introduction to Python

Python was created by Guido Van Rossum when he was working at CWI (Centrum
Wiskunde & Informatica) which is a National Research Institute for Mathematics and
Computer Science in Netherlands. The language was released in I991. Python got its
name from a BBC comedy series from seventies- “Monty Pythons Flying Circus”.
Python can be used to follow both Procedural approach and Object Oriented approach
of programming. It is free to use.

Some of the features which make Python so popular are as follows:

Y It is a general purpose programming language which can be used for both
       scientific and non scientific programming.
Y It is a platform independent programming language.
Y It is a very simple high level language with vast library of add-on modules.
Y It is excellent for beginners as the language is interpreted, hence gives immediate
        results.
Y The programs written in Python are easily readable and understandable.
Y It is suitable as an extension language for customizable applications.
Y It is easy to learn and use.

The language is used by companies in real revenue generating products, such as:
Y In operations of Google search engine, youtube, etc.
Y Bit Torrent peer to peer file sharing is written using Python
Y Intel, Cisco, HP, IBM, etc use Python for hardware testing.
Y Maya provides a Python scripting API
Y i–Robot uses Python to develop commercial Robot.
Y NASA and others use Python for their scientific programming task.

Python is a terrific language. The syntax is simple and code length is short which makes it easy to understand and write.

Visit  python.org for the downloads/documentation.
Python will work in both Windows and Linux
Python 3.6 and 2.7 are the two stable releases. ( Which versions to use? I prefer 2.7 for this basic course)

The Python programming language was conceived in the late 1980s and its implementation was started in December 1989
Python 2.0 was released on October 16, 2000
Python 3.0,  was released on December 3, 2008


There is some difference between 2.x and 3.x  read this before proceeding https://wiki.python.org/moin/Python2orPython3

Comments

  1. Pretty Post! Thank you so much for sharing this good content, it was so nice to read and useful to improve my knowledge as an updated one, keep blogging.

    Python Certification Training in Electronic City

    ReplyDelete

Post a Comment

Popular posts from this blog

Classes and Objects in Python

Python is an object-oriented programming language, which means that it provides features that support object-oriented programming. The basic components of object oriented programming are classes and objects. A Class is a blue print to create an object. It provides the definition of basic attributes and functions of objects. Object is a running instance of the class having the identity(name), properties( values) and behaviors(functions). The Object oriented program thus consist of object definitions (classes) and most of the computations and functions are mentioned as operations on the object. Each object definition corresponds to some object or concept in the real world, and the functions that operate on these object correspond to the ways real-world objects interact. We have learned objects of string, list, tuple etc…and used the properties and functionalities of these objects which are built into the Python. Now we are going to create our own(user defined) objects. Th

Identifiers,Variables and Keywords

Identifiers An identifier is a name given to entities like variables,functions,class, functions etc. It helps to differentiate one entity from another. Rules for writing identifiers 1.Identifiers can be a combination of letters in lowercase (a to z) or uppercase (A to Z) or digits (0 to 9) or an underscore _.  Names like myClass, var_1 and print_this_to_screen, all are valid example. 2.An identifier cannot start with a digit. 1variable is invalid, but variable1 is a valid name. 3.Keywords cannot be used as identifiers. Eg: global = 1 is invalid 4.We cannot use special symbols like !, @, #, $, % etc. in our identifier. a@=0 is invalid 5.An identifier can be of any length. Things to Remember Python is a case-sensitive language. This means, Variable and variable are not the same. Always give the identifiers a name that makes sense. While c = 10 is a valid name, writing count=10 would make more sense, and it would be easier to figure out what it represents when you look at your code after

Files in Python , Exception handling

While a program is running, its data is in main memory. When the program ends, or the computer shuts down, data in memory disappears. To store data permanently, you have to put it in a file. Files are usually stored on a secondary storage device(hard disk, pen drive, DVD,CD etc).  When there are a large number of files, they are often organized into directories (also called “folders”). Each file is identified by a unique name, or a combination of a file name and a directory name.  By reading and writing files, programs can exchange information with each other and generate printable formats like PDF. Working with files is a lot like working with books. To use a book, you have to open it. When you’re done, you have to close it. While the book is open, you can either write in it or read from it. In either case, you know where you are in the book. Most of the time, you read the whole book in its natural order, but you can also skip around. All of this applies to files as well.