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Python Exercises for Beginners: Loops

Python Exercises for Beginners: Loops

For loop Exercises

Basic Exercises

  1. Print “Python” 5 times: Write a for loop to print the word “Python” five times.
  2. Print numbers 0 to 9: Write a for loop to print numbers from 1 to 10.
  3. Print even numbers 2 to 20: Write a for loop to print all even numbers from 2 to 20.
  4. Print each character in a string: Write a for loop to iterate through the string “Hello, World!” and print each character.
  5. Find the factorial of a number: Write a for loop to calculate the factorial of a given number, e.g., 5! = 5 × 4 × 3 × 2 × 1.
  6. Squares of numbers 1 to 5: Write a Python for loop that prints the square of each number from 1 to 5.
  7. Count down from 10 to 1: Use a for loop to print numbers from 10 down to 1.
  8. Calculate the sum of the first N natural numbers

Intermediate Exercises

  1. Print the multiplication table for 5: Write a for loop to print the multiplication table for the number 5.
  2. Print the first 10 Fibonacci numbers: Write a for loop to generate the first 10 numbers in the Fibonacci sequence.
  3. Check if a number is prime: Write a for loop to check if a given number is prime.
  4. Sum of digits of a number: Write a for loop to calculate the sum of the digits of a given number, e.g., 1234.
  5. Print a pattern of stars: Use nested for loops to print the following pattern: 
    *
**
***
****
*****
  6. Print odd numbers between 1 and 20: Write a for loop to print all odd numbers between 1 and 20.
  7. Count vowels in a string: Use a for loop to count the number of vowels in the string “Hello, World!”.

Advanced Exercises

  1. Generate a list of even numbers: Use a for loop to generate a list of even numbers between 1 and 20.
  2. Print numbers divisible by 3 and 5 between 1 and 50: Use a for loop to print all numbers between 1 and 50 that are divisible by both 3 and 5.
  3. Print a right-angle triangle of numbers: Use nested for loops to print the following pattern: 
    1
12
123
1234
12345
  4. Print numbers that are multiples of 3 up to 30: Use a for loop to print all multiples of 3 up to 30.
  5. Find numbers divisible by 7 and 11 between 1 and 100: Use a for loop to print all numbers between 1 and 100 that are divisible by both 7 and 11.
  6. Calculate the harmonic sum of n numbers:

While loop Exercises

Here are some beginner-friendly Python while loop exercises:

✅ Exercise 1: Print Numbers from 1 to 10

Write a program using a while loop to print numbers from 1 to 10.

✅ Exercise 2: Sum of First N Natural Numbers

Write a program that asks the user for a number n and calculates the sum of numbers from 1 to n using a while loop.

✅ Exercise 3: Multiplication Table

Write a program to print the multiplication table of a given number using a while loop.

✅ Exercise 4: Reverse a Number

Ask the user to enter a number and print its reverse using a while loop.

✅ Exercise 5: Count Digits in a Number

Write a program to count the number of digits in a given number using a while loop.

✅ Exercise 6: Factorial Calculation

Create a program to calculate the factorial of a given number using a while loop.

✅ Exercise 7: Print Even Numbers

Write a program to print even numbers between 1 and 20 using a while loop.

✅ Exercise 8: Infinite Loop with Break

Create a loop that runs infinitely until the user types “stop”.

✅ Exercise 9: Sum of Digits

Write a program to calculate the sum of digits of a given number using a while loop.

✅ Exercise 10: Guess the Number Game

Create a simple number guessing game:

  1. Set a secret number (e.g., 7).
  2. Ask the user to guess the number.
  3. Keep asking until the correct number is guessed.
  4. Print “Correct!” when guessed correctly.

✅ Exercise 11: Count Occurrence of a Specific Digit

Write a program to Count Occurrence of a Specific Digit in a Number using Python.