Python Lab Manual (22616) Practical 3 Answers

 Python Lab Manual (22616)Answers

Practical 3: Write Simple Python Program Using Operators  Arithmetic Operators ,Logical operators , Bitwise Operators 

 *Practical  Related Questions.

1)Mention the use of //, **, % operator in Python.

Ans=>  1) // - This is Arithmetic Operator  Use for Floor Division.

             2)**- This is Arithmetic Operator  Use for Calculate First Operand Power to Second Operand .

             3) %- This is Arithmetic Operator  it returns the reminder of division.

2)Describe ternary operator in Python

Ans=> 1) Ternary operators are also known as conditional expressions are operators that evaluate something based on a condition being true or false .

          2) Syntax : [on_true] if [expression] else [on_false] 

false

3) Describe about different Logical operators in Python with appropriate examples.

Ans => 1) Logical Operators: Logical operators perform Logical AND, Logical OR and Logical 

NOT operations. For logical operators following condition are applied.

             2)For AND operator – It returns TRUE if both the operands (right side and left side)  are true

             3) For OR operator- It returns TRUE if either of the operand (right side or left side) is true

             4) For NOT operator- returns TRUE if operand is false

             

a = True

b = False

  

print(a and b)

print(a or b)

  

print(not a)

Output :

 

  False

  True

  False

4) Describe about different Arithmetic operators in Python with appropriate 

examples.

Ans=>

Operation	Operator		Example in Python Shell
Addition: Sum of two operands	+		>>> x = 5; y = 6 >>> x + y 11 >>> import operator >>> operator.add(5,6) 11
Subtraction: Left operand minus right operand	-		>>> x = 10; y = 5 >>> x - y 5 >>> import operator >>> operator.sub(10, 5) 5
Multiplication	*		>>> x = 5; y = 6 >>> x * y 30 >>> import operator >>> operator.mul(5,6) 30
Exponentiation: Left operand raised to the power of right	**		>>> x = 2; y = 3 >>> x ** y 8 >>> import operator >>> operator.pow(2, 3) 8
Division	/		>>> x = 6; y = 3 >>> x / y 2 >>> import operator >>> operator.truediv(6, 3) 2
Floor division: equivilant to math.floor(a/b)	//		>>> x = 6; y = 5 >>> x // y 1 >>> import operator >>> operator.floordiv(6,5) 1
Modulus: Reminder of a/b	%		>>> x = 11; y = 3 >>> x % y 12 >>> import operator >>> operator.mod(11, 3)

5) Describe about different Bitwise operators in Python with appropriate examples.

Ans=>

           1) &(AND) : Set each bit to 1 if both bits are 1

           2)  | (OR)   : Set each bit to 1 if one of the two bits are 1

           3) ^ (XOR): Set each bit to 1 if one bit is 1

           4) ~ (NOT) : Inverts all bit

           5)<< (LEFT SHIFT) : The left operand's value is moved

           6) >> (Right shift): The left operand's value is moved right by the number of bits specified by the right operand

*Exercise 

1) Write a program to convert U.S. dollars to Indian rupees.

Ans=> 

us=float(input("enter us dollar="))

rs=us*75

print("indian Currency =",rs,"rupees")

  

2. Write a program to convert bits to Megabytes, Gigabytes and Terabytes

Ans=> 

bits = int(input("Enter the Bits : "))

byte = bits/8

megabyte = byte/1000000

gigabyte = megabyte/1000

terabyte = gigabyte/1000

print("MB = ", megabyte)

print("GB = ", gigabyte)

print("TB = ", terabyte)

3. Write a program to find the square root of a number

Ans=> 

number = int(input("Enter a number : "))

sqrt = number ** 0.5

print("Square root = ",sqrt)

4. Write a program to find the area of Rectangle

Ans=> 

l = float(input("Enter the length of Rectangle : "))

b = float(input("Enter the breadth of Rectangle : "))

Area = l*b

print("Area of Rectangle : ",Area)

5. Write a program to calculate area and perimeter of the square

Ans=> 

side = int(input("Enter the side : "))

Area = side*side

Perimeter = 4*side

print("Area of square : ",Area)

print("Perimeter of square : ",Perimeter)

6. Write a program to calculate surface volume and area of a cylinder.

Ans=> 

PI = 3.14

r = float(input("Enter Radius : "))

h = float(input("Enter Height : "))

surface_area = 2 * PI * r * ( r + h )

volume = PI * r * r * h

print("Surface Area = ",surface_area)

print("Volume = ",volume)

7. Write a program to swap the value of two variables

Ans=>

x = input("Enter first number : ")

y = input("Enter second number : ")

temp = x

x = y

y = temp

print("After swapping first number : ",x)

print("After swapping second number : ",y)