35 Python Programming Exercises and Solutions

To understand a programming language deeply, you need to practice what you’ve learned. If you’ve completed learning the syntax of Python programming language, it is the right time to do some practice programs.

In this article, I’ll list down some problems that I’ve done and the answer code for each exercise. Analyze each problem and try to solve it by yourself. If you have any doubts, you can check the code that I’ve provided below. I’ve also attached the corresponding outputs.

1. Python program to check whether the given number is even or not.

number = input("Enter a number ")
x = int(number)%2
if x == 0:
    print(" The number is Even ")
else:
    print(" The number is odd ")

Output:

2. Python program to convert the temperature in degree centigrade to Fahrenheit

c = input(" Enter temperature in Centigrade: ")
f = (9*(int(c))/5)+32
print(" Temperature in Fahrenheit is: ", f)

Output:

3. Python program to find the area of a triangle whose sides are given

import math
a = float(input("Enter the length of side a: "))
b = float(input("Enter the length of side b: "))
c = float(input("Enter the length of side c: "))
s = (a+b+c)/2
area = math.sqrt(s*(s-a)*(s-b)*(s-c))
print(" Area of the triangle is: ", area)

Output:

4. Python program to find out the average of a set of integers

count = int(input("Enter the count of numbers: "))
i = 0
sum = 0
for i in range(count):
    x = int(input("Enter an integer: "))
    sum = sum + x
avg = sum/count
print(" The average is: ", avg)

Output:

5. Python program to find the product of a set of real numbers

i = 0
product = 1
count = int(input("Enter the number of real numbers: "))
for i in range(count):
    x = float(input("Enter a real number: "))
    product = product * x
print("The product of the numbers is: ", product)

Output:

6. Python program to find the circumference and area of a circle with a given radius

import math
r = float(input("Input the radius of the circle: "))
c = 2 * math.pi * r
area = math.pi * r * r
print("The circumference of the circle is: ", c)
print("The area of the circle is: ", area)

Output:

7. Python program to check whether the given integer is a multiple of 5

number = int(input("Enter an integer: "))
if(number%5==0):
    print(number, "is a multile of 5")
else:
    print(number, "is not a multiple of 5")

Output:

8. Python program to check whether the given integer is a multiple of both 5 and 7

number = int(input("Enter an integer: "))
if((number%5==0)and(number%7==0)):
    print(number, "is a multiple of both 5 and 7")
else:
    print(number, "is not a multiple of both 5 and 7")

Output:

9. Python program to find the average of 10 numbers using while loop

count = 0
sum = 0.0
while(count<10):
    number = float(input("Enter a real number: "))
    count=count+1
    sum = sum+number
avg = sum/10;
print("Average is :",avg)

Output:

10. Python program to display the given integer in reverse manner

number = int(input("Enter a positive integer: "))
rev = 0
while(number!=0):
    digit = number%10
    rev = (rev*10)+digit
    number = number//10
print(rev)

Output:

11. Python program to find the geometric mean of n numbers

c = 0
p = 1.0
count = int(input("Enter the number of values: "))
while(c<count):
    x = float(input("Enter a real number: "))
    c = c+1
    p = p * x
gm = pow(p,1.0/count)
print("The geometric mean is: ",gm)

Output:

12. Python program to find the sum of the digits of an integer using while loop

sum = 0
number = int(input("Enter an integer: "))
while(number!=0):
    digit = number%10
    sum = sum+digit
    number = number//10
print("Sum of digits is: ", sum)

Output:

13. Python program to display all the multiples of 3 within the range 10 to 50

for i in range(10,50):
    if (i%3==0):
        print(i)

Output:

14. Python program to display all integers within the range 100-200 whose sum of digits is an even number

for i in range(100,200):
    num = i
    sum = 0
    while(num!=0):
        digit = num%10
        sum = sum + digit
        num = num//10
    if(sum%2==0):
        print(i)

Output:

15. Python program to check whether the given integer is a prime number or not

num = int(input("Enter an integer greater than 1: "))
isprime = 1 #assuming that num is prime
for i in range(2,num//2):
    if (num%i==0):
        isprime = 0
        break
if(isprime==1):
    print(num, "is a prime number")
else:
    print(num, "is not a prime number")

Output:

16. Python program to generate the prime numbers from 1 to N

num =int(input("Enter the range: "))
for n in range(2,num):
    for i in range(2,n):
        if(n%i==0):
            break
    else:
        print(n)   

Output:

17. Python program to find the roots of a quadratic equation

import math
a = float(input("Enter the first coefficient: "))
b = float(input("Enter the second coefficient: "))
c = float(input("Enter the third coefficient: "))
if (a!=0.0):
    d = (b*b)-(4*a*c) 
    if (d==0.0):
        print("The roots are real and equal.") 
        r = -b/(2*a)
        print("The roots are ", r,"and", r)
    elif(d>0.0):
        print("The roots are real and distinct.")
        r1 = (-b+(math.sqrt(d)))/(2*a) 
        r2 = (-b-(math.sqrt(d)))/(2*a)
        print("The root1 is: ", r1)
        print("The root2 is: ", r2)
    else:
        print("The roots are imaginary.")
        rp = -b/(2*a)
        ip = math.sqrt(-d)/(2*a)
        print("The root1 is: ", rp, "+ i",ip)
        print("The root2 is: ", rp, "- i",ip)
else:
    print("Not a quadratic equation.")

Output:

18. Python program to print the numbers from a given number n till 0 using recursion

def print_till_zero(n):
    if (n==0):
        return
    print(n)
    n=n-1
    print_till_zero(n)
print_till_zero(8)

Output:

19. Python program to find the factorial of a number using recursion

def fact(n):
    if n==1:
        f=1
    else:
        f = n * fact(n-1)
    return f
num = int(input("Enter an integer: "))
result = fact(num)
print("The factorial of", num, " is: ", result)

Output:

20. Python program to display the sum of n numbers using a list

numbers = []
num = int(input('How many numbers: '))
for n in range(num):
    x = int(input('Enter number '))
    numbers.append(x)
print("Sum of numbers in the given list is :", sum(numbers))

Output:

21. Python program to implement linear search

numbers = [4,2,7,1,8,3,6]
f = 0 #flag
x = int(input("Enter the number to be found out: "))
for i in range(len(numbers)):
    if (x==numbers[i]):
        print(" Successful search, the element is found at position", i)
        f = 1
        break
if(f==0):
    print("Oops! Search unsuccessful")

Output:

22. Python program to implement binary search

def binarySearch(numbers, low, high, x):
    if (high >= low):
        mid = low + (high - low)//2
        if (numbers[mid] == x):
            return mid
        elif (numbers[mid] > x):
            return binarySearch(numbers, low, mid-1, x)
        else:
            return binarySearch(numbers, mid+1, high, x)
    else:
        return -1
numbers = [ 1,4,6,7,12,17,25 ]   #binary search requires sorted numbers
x = 7
result = binarySearch(numbers, 0, len(numbers)-1, x)
if (result != -1):
    print("Search successful, element found at position ", result)
else:
    print("The given element is not present in the array")

Output:

23. Python program to find the odd numbers in an array

numbers = [8,3,1,6,2,4,5,9]
count = 0
for i in range(len(numbers)):
    if(numbers[i]%2!=0):
        count = count+1
print("The number of odd numbers in the list are: ", count)

Output:

24. Python program to find the largest number in a list without using built-in functions

numbers = [3,8,1,7,2,9,5,4]
big = numbers[0]
position = 0
for i in range(len(numbers)):
    if (numbers[i]>big):
        big = numbers[i]
        position = i
print("The largest element is ",big," which is found at position ",position)

Output:

25. Python program to insert a number to any position in a list

numbers = [3,4,1,9,6,2,8]
print(numbers)
x = int(input("Enter the number to be inserted: "))
y = int(input("Enter the position: "))
numbers.insert(y,x)
print(numbers)

Output:

26. Python program to delete an element from a list by index

numbers = [3,4,1,9,6,2,8]
print(numbers)
x = int(input("Enter the position of the element to be deleted: "))
numbers.pop(x)
print(numbers)

Output:

27. Python program to check whether a string is palindrome or not

def rev(inputString):
    return inputString[::-1]
def isPalindrome(inputString):
    reverseString = rev(inputString)
    if (inputString == reverseString):
        return True
    return False
s = input("Enter a string: ")
result = isPalindrome(s)
if result == 1:
    print("The string is palindrome")
else:
    print("The string is not palindrome")

Output:

28. Python program to implement matrix addition

X = [[8,5,1],
[9 ,3,2],
[4 ,6,3]]
Y = [[8,5,3],
[9,5,7],
[9,4,1]]
result = [[0,0,0],
[0,0,0],
[0,0,0]]
for i in range(len(X)):
    for j in range(len(X[0])):
        result[i][j] = X[i][j] + Y[i][j]
for k in result:
    print(k)

Output:

29. Python program to implement matrix multiplication

X = [[8,5,1],
[9 ,3,2],
[4 ,6,3]]
Y = [[8,5,3],
[9,5,7],
[9,4,1]]
result = [[0,0,0,0],
[0,0,0,0],
[0,0,0,0]]
for i in range(len(X)):
    for j in range(len(Y[0])):
        for k in range(len(Y)):
            result[i][j] += X[i][k] * Y[k][j]
for x in result:
    print(x)

Output:

30. Python program to check leap year

year = int(input("Enter a year: "))
if (year % 4) == 0:
    if (year % 100) == 0:
        if (year % 400) == 0:
            print(year, " is a leap year")
        else:
            print(year, " is not a leap year")
    else:
        print(year, " is a leap year")
else:
    print(year, " is not a leap year")

Output:

31. Python program to find the Nth term in a Fibonacci series using recursion

def Fib(n):
    if n<0:
        print("The input is incorrect.")
    elif n==1:
        return 0
    elif n==2:
        return 1
    else:
        return Fib(n-1)+Fib(n-2)
print(Fib(7))

Output:

32. Python program to print Fibonacci series using iteration

a = 0
b = 1
n=int(input("Enter the number of terms in the sequence: "))
print(a,b,end=" ")
while(n-2):
    c=a+b
    a,b = b,c
    print(c,end=" ")
    n=n-1

Output:

33. Python program to print all the items in a dictionary

phone_book = {
'John' : [ '8592970000', 'john@xyzmail.com' ],
'Bob': [ '7994880000', 'bob@xyzmail.com' ],
'Tom' : [ '9749552647' , 'tom@xyzmail.com' ]
}
for k,v in phone_book.items():
    print(k, ":", v)

Output:

34. Python program to implement a calculator to do basic operations

def add(x,y):
    print(x+y)
def subtract(x,y):
    print(x-y)
def multiply(x,y):
    print(x*y)
def divide(x,y):
    print(x/y)
print("Enter two numbers")
n1=input()
n2=input()
print("Enter the operation +,-,,/ ") 
op=input() 
if op=='+':
    add(int(n1),int(n2))
elif op=='-':
    subtract(int(n1),int(n2))
elif op=='':
    multiply(int(n1),int(n2))
elif op=='/':
    divide(int(n1),int(n2))
else:
    print(" Invalid entry ")

Output:

35. Python program to draw a circle of squares using Turtle

import turtle
x=turtle.Turtle()


def square(angle):
    x.forward(100)
    x.right(angle)
    x.forward(100)
    x.right(angle)
    x.forward(100)
    x.right(angle)
    x.forward(100)
    x.right(angle+10)

for i in range(36):
    square(90)

Output:

Conclusion

For practicing more such exercises, I suggest you go to hackerrank.com and sign up. You’ll be able to practice Python there very effectively.

Once you become comfortable solving coding challenges, it’s time to move on and build something cool with your skills. If you know Python but haven’t built an app before, I suggest you check out my Create Desktop Apps Using Python & Tkinter course. This interactive course will walk you through from scratch to building clickable apps and games using Python.

I hope these exercises were helpful to you. If you have any doubts, feel free to let me know in the comments.

Happy coding.