Assignment Operators and Bitwise Operators In python

 

 What is an operator ?

 - operator is a Special Symbol which usually represents  an action or process on

    variables .An operator can manipulate an operand.

1.Assignment Operator :

 Name itself suggest that assigning value to operand .The in-place operator also known as shortcut operator .Assignment operators can be used on other data types as well .Assignment Operator is simply means a operator which is use to assign a value to variable

Assignment Operators Will help to reduce code and as well  as it make code classy 

Example    x=2   //  " = " is equal to is simple assignment operator who assign value 2 into                          variable x 

 

Operator	Example	Equivalent to..
=	x=2	x=2
+=	x+=1	x=x+1
-=	x-=2	x=x-2
*=	x*=3	x=x*3
/=	x/=4	x=x/4
%=	x%=5	x=x%5
**=	x**=2	x=x**2
//=	x//=1	x=x//1
&=	x&=7	x&7

Generally assignment operators will use in the questions to confuse student  

2. Bitwise Operator : 

   As the name suggests, bitwise operators perform operations on bit level . These operators include

bitwise AND <OR<XOR . bitwise operator cannot be applied to float or double.

Python has six Bitwise operators . Following table will help to understand in well 

    

Bitwise Operator	Description	Simple Example
&	Bitwise AND Operator	5 & 3= 1
|	Bitwise OR Operator	5 | 3= 7
^	Bitwise XOR Operator	5 ^ 3 = 6
~	Bitwise Ones’ Complement Operator	~5 = -6
<<	Bitwise Left Shift operator	5<<3 = 40
>>	Bitwise Right Shift Operator	10>>1 = 2

1.Truth table of Bitwise AND operator :

A	B	A&B
0	0	0
0	1	0
1	0	0
1	1	1

 

2.Truth table of Bitwise OR Operator   : 

A	B	A|B
0	0	0
0	1	1
1	0	1
1	1	1

3. Truth table of Bitwise XOR    :

A	B	A^B
0	0	0
0	1	1
1	0	1
1	1	0

4.Bitwise NOT:

A	~A
0	1
1	0

Shifting operators :

Python supports two shifting operator . they are right shift and left shift . These operators are used

 to shifts bits either  to the left side or right side. 

1 . Left shift Operator " << " = Now to explain left shift consider above example

                                                      
                                                  5<<3 Here Binary Digits of 5 get shift by 3

                                                  5 = 0101.0000 (Binary ) get shifted by 3 digits on LHS

                                                        0101000.00 = 40   (Decimal )

In left Shit we Gain the bits

2. Right Shift Operator ">>"= 10 Binary Representation (1010)  Get shifted By three                                                        
                                                      Digits  on right hand side 10>>3
                                                     
                                                      1.01000 whos decimal value is 1
             
In Right Shift we Lose the Bits . an if use notice carefully you will notice that shift once to right is divides the number by 2.Hence multiple shifts to the right , result in dividing the number by 2.

Note : to understand shifting operator Consider a  decimal point