Python Operators

Operators are functions that perform some logical calculations. In other words, these are the constructs that manipulate the value of the operands. Python supports several kinds of operators. let us discuss one –by – one in detailed.Arithmetic operators :

Arithmetic operators are used for Addition, subtraction, multiplication and division and so on. Let us discuss them with an example.

Let us consider the operator with A =100 , B = 200

Operator	Description	Example
Addition(+)	Add values on either side of the operator	A+B =300
Subtraction(-)	Subtracts A from B	B-A =100
Multiplication(*)	Multiplies A with B	A*B = 2000
Division(/)	Divides the denominator with numerator	B/A =2
Modulo(%)	Performs the division operator and returns the remainder	B%A=0
Exponent(**)	Performs exponential calculation on operators	A**B= 100 power 200

Relational / comparison operator :

These operator compares the operands and displays the result.

Let us assume a = 3 , b =5

Operator	Description	Example
==	This operation returns true if two values are equal	A ==B  returns False
!=	If the two operations are not equal  this returns true	A!=B returns true
	If the value of the left operand is greater than right this returns true	A>B returns false
<	This operator true if the left operand is less than the right operand	A< B returns true
>=	This operator returns true if the left operand is greater than or equal to the right operand	A>=B returns false
<=	This operator returns true if the left operand  is less than or equal to the right operand	A<=B returns True

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Assignment operator :

An assignment operator is used to assign a new value to the variable.

Let us assume a =5 , B = 10

Operator	Description	Example
=	Assigns a value from right operand to left operand	C= a+b assigns the value of the sum of A and B to c
+= ADD and	It adds right operand to the left operand and assigns the result to the left operand	C+=a  is equivalent to c= c+a
-=Sub and	It subtracts right operand from the left operand and assigns the results to the left operand	C-=a is equivalent to  c = c –a
*=Multiply and	It multiplies right operand with left operand and assigns the  result to the left operand	C*=a is equivalent to c = c*a
/= division and	It divides the left operand with the right operand and assigns the result to the left  operand	C/=a is equivalent to c = c/a
%= Modulo and	It performs modulus of the two operands and assigns the result to left operand	%=a  is equivalent to c= c%a
**=Exponent And	It performs an exponential calculation on two operands and assigns the value to the left operand	c**=a is equivalent to c = c**a

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Bit-wise operators :

Every operation that needs to perform must divide into bits. And performs the operation and displays the result in the decimal format.

Let us discuss with an example A =30, B= 23

These two numbers written in binary format as

A = 30 = 0001 1110, B = 23 = 0001 0111.

Operator	Description	Example
And (&)	If both the inputs are 1 ‘s the result is 1 else the result is zero	A&B  =22 (0001 0110)
Or(|)	If both the inputs are 0’s the result is zero else the result is 1	A|B= 31(0001 1111)
Xor(^)	If both the bits are same the result is 0 else the result is 1	A^B =9(0000 1001)
Compliment(~)	If the input is one the output is zero and vice-versa	A~B =-31(1000 1111)
Binary left shift (<<)	The left operands are move left by the number of bits specified by the right operand	A<<2 = 120(0111 1000)
Binary right shift(>>)	The right operands are moved right but the number of bits specified by the right operand	A>>2 =(0000 0111)

Logical operators :

Logical operators are used the logic condition ( true (or) false). We have three types of logical operators.

Let a = 5 , b=10, c =20

Operator	Description	Example
And	True  only if both the inputs are one	aTrueac returns false
Or	True if any one of the input is one	ac  returns truea>b and a>c returns false
Not	It negates the input	afalse

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Membership operator :

The membership operators are classified into two types.

A={1 ,2,3,4,5}

Operator	Description	Example
Is	It returns true if the value is found in the sequence	5 in A returns True10 in A returns False
Not in	True if the variable is not found in the sequence	5 not in A returns False10 not in A returns True

Identity operators :

It compares the objects memory address

A =100 , B =100

Operator	Description	Example
Is	Returns true if the operands identity is same	A is B returns True
Is not	Returns true if the operand identity is not the same	A is not B returns false

Operator precedence :

When there is several operations to be performed, operator precedence determines which operator would be given importance over others. 

**

~+/~-

*/%//

+-

>><<

&

^|

<=< >>=

<>==!=

= -= +=//=%=/=*=*==

Is isnot

In innot

Not or and

Note :

we can expect a question in Operator precedence in  online certificate courses