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Operators

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Operators:

Operators are used to perform operations on variables and values.

Python divides the operators in the following groups:

  • Arithmetic operators
  • Assignment operators
  • Comparison operators
  • Logical operators
  • Bitwise operators

    1.  Arithmetic operators

    Arithmetic operators are used with numeric values to perform common mathematical operations:

     

    Operator

    Name of Operator

    Example

    +

    Addition

    a+b

    -

    Subtraction

    a-b

    *

    Multiplication

    a*b

    /

    Division

    a/b

    %

    Modulus

    a%b

    **

    Exponentiation

    a**b

    //

    FLoor Division

    a//b

     

    2. Assignment Operators

    Assignment operators are used to assign values to variables. Some of the assignment operators are:

     

    Operator

    Example

    Same as

    =

    x=10

    x=10    

    +=

    x+=5

    x=x+5

    -=

    x-=5

    x=x-5

    *=

    x*=5

    x=x*5

    /=

    x/=5

    x=x/5

    %=

    x%=5

    x=x%5

    **=

    x**=5

    x=x**5

    //=

    x//=5

    x=x//5

     

    3. Comparison Operators

    Comparison operators are used to compare two values:

     

    Operator

    Name of Operator

    Example

    ==

    Equal to

    x==y

    !=

    Not Equal to

    x!=y

    >

    Greater Than

    x>y

    <

    Less Than

    x<y

    >=

    Greater than or Equal to

    x>=y

    <=

    Less than or Equal to

    x<=y

     

    4. Logical Operators

     

    Operator

    Description

    Example

    and

    Returns True if both statements are true

    x < 5 and  x < 10

    or

    Returns True if one of the statements is true

    x < 5 or x < 4

    not

    Reverse the result, returns False if the result is true

    not(x < 5 and x < 10)

     

    5. Bitwise Operators

     

    Operator

    Name

    Description

    &

    AND

    Sets each bit to 1 if both bits are 1

    |

    OR

    Sets each bit to 1 if one of two bits is 1

    ^

    XOR

    Sets each bit to 1 if only one of two bits is 1

    ~

    NOT

    Inverts all the bits

    <<

    Zero fill left shift

    Shift left by pushing zeros in from the right and let the leftmost bits fall off

    >>

    Signed right shift

    Shift right by pushing copies of the leftmost bit in from the left, and let the rightmost bits fall off

    Example:

    Write a program to find the square root of a given number

    x=int(input("Enter an integer number : "))
sq_root=x**0.5
print("Square Root of",x,"is : ",sq_root)

#Output
Enter an integer number : 4
Square Root of 4 is :  2.0