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Python Operators

Python Operators

Python Operators

A PEMDAS (Parenthesis, Exponential, Multiply, Division, Addition, Subtraction) rule is used for the precedence of operators in Python. Operators having same priority are evaluated from left to right.

  1. Python Arithmetic Operator

    It is used for mathematical operations such as addition, substraction, multiplication and division etc.

    x = 10
    y = 5
    print('x + y =',x+y) #Addition
    print('x - y =',x-y) #Substraction
    print('x * y =',x*y) #Multiplication
    print('x / y =',x/y) #Division
    print('x // y =',x//y) #Floor Division
    print('x ** y =',x**y) #Exponent
  2. Python Comparison Operators

    It is used to compare values between operands.

    x = 121
    y = 101
    print('x > y is',x>y) #Greater than
    print('x < y is',x= y is',x>=y) #Greater than equal to
    print('x <= y is',x<=y) #Less than equal to
  3. Python Logical Operators
    x = True
    y = False
    print('x and y is',x and y) #if both are true
    print('x or y is',x or y) #if either one is true
    print('not x is',not x) #returns the complement
  4. Python Bitwise Operators

    It is used to manipulate bit values

    a = 6
    b = 3
    print ('a=',a,':',bin(a),'b=',b,':',bin(b)) c = 0
    c = a & b
    print ("result of AND is ", c,':',bin(c))
    c = a | b
    print ("result of OR is ", c,':',bin(c))
    c = a ^ b
    print ("result of EXOR is ", c,':',bin(c))
    c = ~a
    print ("result of COMPLEMENT is ", c,':',bin(c))
    c = a << 2
    print ("result of LEFT SHIFT is ", c,':',bin(c))
    c = a>>2
    print ("result of RIGHT SHIFT is ", c,':',bin(c))
  5. Python Membership Operators

    Test for membership in a sequence

    a = 5
    b = 10
    list = [1, 2, 3, 4, 5 ]
    if ( a in list ):
        print ("Line 1 - a is available in the given list")
    else:
        print ("Line 1 - a is not available in the given list")
    if ( b not in list ):
        print ("Line 2 - b is not available in the given list")
    else:
        print ("Line 2 - b is available in the given list")
  6. Python Identity Operators

    It checks if values on either side of equality operator point to the same object.

    a = 14
    b = 14
    print ('Line 1','a=',a,':',id(a), 'b=',b,':',id(b))
    if ( a is b ):
       print ("Line 2 - a and b have same identity")
    else:
       print ("Line 2 - a and b do not have same identity")