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Introduction to the Python

  1. PYTHON APPLICATION PROGRAMMING 17CS664 IA MARKS: 40 EXAM MARKS : 60 CREDITS: 03 By. Ravi Kumar B N Assistant Professor, Dept. of CSE
  3. WHAT IS PYTHON…? • Python is an interpreted, high-level, general-purpose(designed to be used for writing software in the widest variety of application domains) programming language.
  4. High level language Expressive – More readable Interpreted Language Cross-platform/ Portable Large Standard Library Everything is object in python open source FEATURES
  6. COMPILER V/S INTERPRETER  Interpreted code istranslated to machine instructions step by step while the program is being executed.  Compiled code has been translated before program execution.
  7. - Python runs virtually every major platform used today. - As long as you have a compatible python interpreter installed, python programs will run in exactly the same manner, irrespective of platform. PORTABLE
  8. - Dynamic typing –type of a variable isinterpreted at run time. - Built-in types and tools - Library utilities - Third party utilities (e.g. NumPy, SciPy) - Automatic memory management IT'S POWERFUL
  9. Numpy- library, support for large, multidimensional arrays and matrices, along with a large collection of high level mathematical functions to operate on the arrays. Scipy- Contains modules for optimization, linear algebra signals, image processing.
  10. Python is an object-oriented programming language. It allows us to develop applications using an object oriented approach. Inpython, we can easily create and use classes and objects. Everything is object inpython. structure supports such concepts - polymorphism, operation overloading, and inheritance. PYTHON IS OBJECT-ORIENTED
  11. Downloading and installing python is free and easy. source code is easily accessible. OPEN SOURCE (IT'S FREE )
  13. IDLE IDLE (Integrated Development and Learning Environment) is an integrated development environment (IDE) forPython. The Python installer for Windows contains the IDLE module by default. IDLE can be used to execute a single statement just like Python Shell and also to create, modify and execute Python scripts.
  14. DIFFERENT IDE AVAILABLE  PyCharm  Spyder  Pydev  IDLE  Wing  EricPython  Rodeo  Thonny  Jupyter Notebook  Visual Studio
  15. WHY DO PEOPLE USE PYTHON…? • Interms of number of developers using, number of libraries we have, number of companies using and number of areas we can implement it. Fastest growing Language • Python's syntax is easy to learn, so both non-programmers and programmers can start programming right away. • Python looks more like a readable
  16. WHAT CAN I DO WITH PYTHON…? • System programming • Graphical User Interface Programming • Internet Scripting • Component Integration • Database Programming • Gaming, Images, XML , Robot and more
  17. WHY OTHER BRANCHES HAS TO STUDY? ECE- Python can be used for signal processing tasks using NumPy andSciPy. Toimplement digital signal processing algorithms EEE- controlling and automating test equipment. Python was originally created fortext parsing so it’s amazingly useful to sift through huge amounts of text data to extract useful information - digital oscilloscope-It can output waveforms as raw CSV data. ME- Mechanical and automobile industries use python to automate tasks. To write scripts and then import them to a CFD software to test numerous designs. Toperform numerical analysis. CIV- the applications of data science in civil engineering: Population forecasting for urban planning, water supply & sewerage system. Risk assessment andmitigation such as prediction of floods, earthquakes, cyclones.
  18. WHO USES PYTHON TODAY… Python is being applied in real revenue-generating products by real companies. For instance: • Google makes extensive use of Python in its web search system. • Intel, Cisco, Hewlett-Packard, Seagate, Qualcomm, and IBM use Python for hardware testing. • ESRI uses Python as an end-user customization tool for its popular GIS mapping products. • The YouTube video sharing service is largely written in Python 10
  19. HISTORY  Invented in the Netherlands, early 90s by Guido van Rossum  Python was conceived in the late 1980s and its implementation was started in December 1989  Guido Van Rossum is fan of ‘Monty Python’s FlyingCircus’, this is a famous TV show in Netherlands  Named after Monty Python  Open sourced from the beginning
  20. TEXT BOOKS 1.“Python for Everybody: Exploring Data Using Python 3” Charles R. Severance 2.“Think Python: How to Think Like a Computer Scientist” Allen B. Downey