Python part1

Python part1

• 1.
  Prof. Neeraj Bhargava VishalDutt Department of Computer Science, School of Engineering & System Sciences MDS University, Ajmer
• 2.
  Introduction Developed by GuidoVan Rossum and released in 1991.  Named after Monty Python Interpreted language: work with an evaluator for language expressions. Python used for:  web development (server-side),  software development,  mathematics,  system scripting.
• 3.
  Python Syntax &Example >>> print("Hello, Python!")// writing on Interpreter directly Hello, Python! //Output OR C:UsersDCS>python file1.py //a python file on the server with .py Extension
• 4.
  Indentation Indentation alludes tothe spaces toward the start of a code line. Where in other programming dialects the space in code is for meaningfulness just, the space in Python is significant. Python utilizes space to show a block of code. if 1 > 0: print(“One is greater!") if 1 > 0: print(“One is greater!")
• 5.
  Comments Python has commentingcapability for the purpose of in-code documentation. Comments start with a #, and Python will render the rest of the line as a comment: #This is comment line. print(“Hello Python!")
• 6.
  String  Enclosing charactersin quotes, called String. strVar1 = 'Hello' strVar2 = "Python“ Accessing Values strVar1 = 'Hello World!' strVar2 = "Python Programming" print “strVar1[0]: ", var1[0] print “strVar2[1:5]: ", var2[1:5] single quotes the same as double quotes in python #Output strVar1[0]: H strVar2[1:5]: ytho
• 7.
  Numbers  Number datatypes store numeric values. They are immutable data types, means that changing the value of a number data type results in a newly allocated object. Example: numVar1 = 11 numVar2 = 10 print(numVar1) print(numVar2)
• 8.
  Deleting Object We canalso delete the reference to a number object by using the del statement. The syntax of the del statement is − del numVar1[,numVar2[,numVar3[....,numVarN]]]] OR del numVar1 del numVar1, numVar2