Question 1

Question 1Assertion (A): The random module is a built-in module to generate pseudorandom variables.Reasoning (R): The randrange() function is used to generate a random number between the specified range in its parameter.Both A and R are true and R is the correct explanation of A.Both A and R are true but R is not the correct explanation of A.A is true but R is false.A is false but R is true.

Accepted Answer

Both A and R are true but R is not the correct explanation of A.ExplanationThe random module is a built-in module used to generate pseudorandom floating point values. The randrange() method generates a random integer number between its lower and upper argument.

Question 2

Question 3Assertion (A): The function ceil() is a commonly used function from math module.Reasoning (R): The ceil() function takes a numeric argument and returns the smallest integer that is greater than or equal to the argument.Both A and R are true and R is the correct explanation of A.Both A and R are true but R is not the correct explanation of A.A is true but R is false.A is false but R is true.

Accepted Answer

Both A and R are true and R is the correct explanation of A.ExplanationThe function ceil() is a commonly used function from math module. The ceil() function takes a numeric argument and returns the closest integer that is greater than or equal to the argument. The syntax is math.ceil(x).

Question 3

Question 4Assertion (A): Some of the real-life applications of random module include CAPTCHA, OTP generation, automatic password generator and auto-filling, etc.Reasoning (R): To import a random module, use:import random
from random import*Both A and R are true and R is the correct explanation of A.Both A and R are true but R is not the correct explanation of A.A is true but R is false.A is false but R is true.

Accepted Answer

Both A and R are true but R is not the correct explanation of A.ExplanationThe random module is used in various real-life applications like CAPTCHA, OTP generation, automatic password generation, and auto-filling forms. The statement to import random module isimport random
from random import *

Question 4

Question 7Assertion (A): Python modules are .py files that contain Python code.Reasoning (R): The import statement allows you to import all the functions from a module into your code.Both A and R are true and R is the correct explanation of A.Both A and R are true but R is not the correct explanation of A.A is true but R is false.A is false but R is true.

Accepted Answer

Both A and R are true and R is the correct explanation of A.ExplanationA module is created as a python (.py) file containing a collection of function definitions, classes and variables. The import statement can be used to import a module. It is the simplest and most common way to use modules in our code. It provides access to all attributes (like variables, constants etc) and methods or functions present in the module.

Question 5

Question 8What output will be displayed after executing the following code?statistics.median([11, 22, 33, 44, 55, 66])28.538.55.56.5

Accepted Answer

38.5Reason — The statistics.median() function calculates the median of a list of numbers. For the list [11, 22, 33, 44, 55, 66], which contains an even number of elements, the median is the average of the two middle numbers. The two middle numbers are 33 and 44, so the median is (33 + 44) / 2 = 38.5.

Question 6

Question 2Write a module to input total number of days and find the total number of months and remaining days and display it in another program.

Accepted Answer

# days.py
def calculate(total_days):
    months = total_days // 30
    remaining_days = total_days % 30
    return months, remaining_days# calculate.py
from days import calculate

total_days = int(input("Enter the total number of days: "))
months, remaining_days = calculate(total_days)
print("Total number of months:", months)
print("Remaining days:", remaining_days)OutputEnter the total number of days: 100
Total number of months:  3
Remaining days:  10

Question 7

Question 5In how many ways can you import objects from a module?

Accepted Answer

We can import objects from a module in 3 ways :import statement can be used to import a module. The syntax is import .Python's from statement is used to import specific attributes or individual objects from a module into the current module or namespace. The syntax is from import .import * statement can be used to import all names from a module into the current calling (namespace) module. The syntax is from import *.

Question 8

Question 6How are the following two statements different from each other?(a) import math(b) from math import*

Accepted Answer

(a) import math — This statement is used to import entire module math. All the functions are imported in a new namespace setup with same name as that of the module math. To access one of the functions, we have to specify the name of the module and the name of the function, separated by a dot. This format is called dot notation.For example,import math
print(math.sqrt(16))(b) from math import * — This statement is used to import all the items from module math in the current namespace. We can use all defined functions, variables etc from math module, without having to prefix module's name to imported item name.For example,from math import *
print(sqrt(16))

Question 9

Question 9A program having multiple functions is considered better designed than a program without any functions. Why?

Accepted Answer

A program having multiple functions is considered better designed than a program without any functions due to the following reasons:Modularity — Functions break the program into smaller, manageable pieces, making it easier to understand and maintain.Code Reusability — Once defined, functions can be reused in different parts of the program, reducing redundancy.Improved Debugging — Breaking down code into functions helps in pinpointing and fixing bugs more efficiently.Simplified Testing — Functions can be individually tested, ensuring each part works as expected.Enhanced Readability — Functions improve the structure of the program, making the code cleaner and more readable.Reduced Program Size — Functions help in reducing the size of the program by avoiding code duplication.

Question 10

Question 10Write a module called calculate_area() that takes base and height as an input argument and returns an area of a triangle as output. The formula used isTriangle Area = 1⁄2 * base * height

Accepted Answer

# calculate_area.py
def area(base, height):
    area = (1/2) * base * height
    return area# triangle.py
from calculate_area import area

base_value = int(input("Enter the base value: "))
height_value = int(input("Enter the height value: "))
triangle_area = calculate_area(base_value, height_value)
print("Area of the triangle:", triangle_area)OutputEnter the base value: 10
Enter the height value: 20
Area of the triangle: 100.0

Question 11

Question 11Rewrite the following Python code after removing all syntax error(s). Underline the corrections done.def main():
    r = input('enter any radius:')
    a = pi * maths.pow(r, 2)
    Print("Area = "+a)
        Main()

Accepted Answer

def main():
    r = input('enter any radius:') #Error 2
    a = pi * maths.pow(r, 2) #Error 3
    Print("Area = "+a) #Error 4
        Main() #Error 5Error 1 — The import math statement is missing.Error 2 — The input() function returns a string, but the radius should be a floating-point number, so added float() function to convert it.Error 3 — The maths module is incorrect, so changed it to math and added math. before pi to correctly reference the mathematical constant and function.Error 4 — The Print function is incorrect, so changed it to print. Instead of using + operator, a comma (,) is used to print the string followed by value of a.Error 5 — The function name Main is incorrect, so changed it to main() to match the function definition and the indentation was corrected to ensure proper execution.The corrected code is as follows:import math

def main():
    r = float(input('enter any radius:')) 
    a = math.pi * math.pow(r, 2)
    print("Area = ", a) 
main()

Question 12

Question 12How is math.ceil(89.7) different from math.floor(89.7)?

Accepted Answer

The math.ceil(x) returns the smallest integer greater than or equal to x. In other words, it rounds up to the nearest integer. For 89.7, the smallest integer greater than 89.7 is 90. While math.floor(x) returns the largest integer less than or equal to x. In other words, it rounds down to the nearest integer. For 89.7, the largest integer less than 89.7 is 89.

Question 13

Question 13Out of random() and randint(), which function should we use to generate random numbers between 1 and 5. Justify.

Accepted Answer

To generate random numbers between 1 and 5, we should use the randint() function from the random module. The randint(a, b) function accepts two parameters, a and b, as the lowest and highest number, returns a number N in the inclusive range [a, b], which signifies a <= N <= b. This function generates a random integer number between two given numbers. In contrast, the random() function generates a random floating point number from 0 to 1.

Question 14

Question 14What is the difference between import statement and from import statement?

Accepted Answer

import statementfrom import statementIt imports entire module.It imports single, multiple or all objects from a module.To access one of the functions, we have to specify the name of the module and the name of the function, separated by a dot. This format is called dot notation. The syntax is : .().To access functions, there is no need to prefix module's name to imported item name. The syntax is : .Imports all its items in a new namespace with the same name as of the module.Imports specified items from the module into the current namespace.This approach does not cause any problems.This approach can lead to namespace pollution and name clashes if multiple modules import items with the same name.For example:import math print(math.pi) print(math.sqrt(25))For example: from math import pi, sqrt print(pi) print(sqrt(25))

Question 15

Question 15Why is from import* statement not recommended for importing Python modules in an external program?

Accepted Answer

Using from module_name import * is not recommended because it can lead to namespace pollution, reduce code readability, introduce unnecessary imports, and increase the risk of errors due to unintended or conflicting names.

Question 16

Question 16Write a function to calculate volume of a box with appropriate default values for its parameters. Your function should have the following input parameters:(a) Length of box(b) Width of box(c) Height of boxTest it by writing the complete program to invoke it.Solutiondef calculate_volume(length = 5, width = 3, height = 2):
    return length * width * height

default_volume = calculate_volume()
print("Volume of the box: ", default_volume)

v = calculate_volume(10, 7, 15)
print("Volume of the box: ", v)

a = calculate_volume(length = 23, height = 6)
print("Volume of the box: ", a)

b = calculate_volume(width = 19)
print("Volume of the box: ", b)OutputVolume of the box:  30
Volume of the box:  1050
Volume of the box:  414
Volume of the box:  190

Accepted Answer

defcalculate_volume(length=5,width=3,height=2):returnlength*width*heightdefault_volume=calculate_volume()print("Volume of the box: ",default_volume)v=calculate_volume(10,7,15)print("Volume of the box: ",v)a=calculate_volume(length=23,height=6)print("Volume of the box: ",a)b=calculate_volume(width=19)print("Volume of the box: ",b)OutputVolume of the box:  30Volume of the box:  1050Volume of the box:  414Volume of the box:  190

Question 17

Question 17Consider the amount of donations received by a charitable organization given as under:donations = [100, 60, 70, 900, 100, 200, 500, 500, 503, 600, 1000, 1200]Now write a Python program to calculate the average amount obtained and median of the above data.Solutionimport statistics
donations = [100, 60, 70, 900, 100, 200, 500, 500, 503, 600, 1000, 1200]
average_amount = statistics.mean(donations)
median_amount = statistics.median(donations)
print("Average amount:", average_amount)
print("Median amount:", median_amount)OutputAverage amount: 477.75
Median amount: 500.0

Accepted Answer

importstatisticsdonations=[100,60,70,900,100,200,500,500,503,600,1000,1200]average_amount=statistics.mean(donations)median_amount=statistics.median(donations)print("Average amount:",average_amount)print("Median amount:",median_amount)OutputAverage amount: 477.75Median amount: 500.0

Question 18

Question 18Write a Python program to generate a random number between 0 and 9.Solutionimport random
random_number = random.randint(0, 9)
print("Random number between 0 and 9:", random_number)OutputRandom number between 0 and 9: 2

Random number between 0 and 9: 3

Accepted Answer

importrandomrandom_number=random.randint(0,9)print("Random number between 0 and 9:",random_number)OutputRandom number between 0 and 9: 2Random number between 0 and 9: 3

Question 19

Question 19Define a function which accepts n as an argument and prints Fibonacci series till n.Solutiondef print_fibonacci(n):
    a, b = 0, 1  
    while a <= n:
        print(a, end=' ')
        a, b = b, a + b

n = int(input("Enter a number: "))
print_fibonacci(n)OutputEnter a number: 10
0 1 1 2 3 5 8

Accepted Answer

defprint_fibonacci(n):a,b=0,1whilean:print(a,end=' ')a,b=b,a+bn=int(input("Enter a number: "))print_fibonacci(n)OutputEnter a number: 100 1 1 2 3 5 8

Question 20

Question 20Consider the temperature given below for the month of June in North India. Calculate the average temperature and median value. This temperature gets dipped with a variation of 20°C in the month of December. Write a Python program to calculate the changed median value and average temperature.LocationTemperature (in °C)Delhi41Shimla32Chandigarh43Rohtak40Srinagar28Sri Ganganagar45Solutionimport statistics
temp_jun = [41, 32, 43, 40, 28, 45]
avg_jun = statistics.mean(temp_jun)
median_jun = statistics.median(temp_jun)

temp_dec = []
for temp in temp_jun:
    temp_dec.append(temp - 20)

avg_dec = statistics.mean(temp_dec)
median_dec = statistics.median(temp_dec)
print("June - Average Temperature:", avg_jun)
print("June - Median Temperature:", median_jun)
print("December - Average Temperature:", avg_dec)
print("December - Median Temperature:", median_dec)OutputJune - Average Temperature: 38.166666666666664
June - Median Temperature: 40.5
December - Average Temperature: 18.166666666666668
December - Median Temperature: 20.5

Accepted Answer

importstatisticstemp_jun=[41,32,43,40,28,45]avg_jun=statistics.mean(temp_jun)median_jun=statistics.median(temp_jun)temp_dec=[]fortempintemp_jun:temp_dec.append(temp-20)avg_dec=statistics.mean(temp_dec)median_dec=statistics.median(temp_dec)print("June - Average Temperature:",avg_jun)print("June - Median Temperature:",median_jun)print("December - Average Temperature:",avg_dec)print("December - Median Temperature:",median_dec)OutputJune - Average Temperature: 38.166666666666664June - Median Temperature: 40.5December - Average Temperature: 18.166666666666668December - Median Temperature: 20.5

Introduction to Python Modules

Assertions And Reasons

Multiple Choice Questions

Solutions To Unsolved Questions