Example 1 : Counting from 1 to 5

count = 1

while count <= 5:
    print(count)
    count = count+1

Output :

1
2
3
4
5

Example 2 : Sum of Numbers from 1 to 10

count = 1
total_sum = 0

while count <= 10:
    total_sum = total_sum + count  
    count =count +  1  

print("The sum of numbers from 1 to 10 is:", total_sum)

Output :

The sum of numbers from 1 to 10 is: 55

Example 3: Asking for a Password

correct_password = "root1234"

while True:
    password = input("Enter the password: ")
    if password == correct_password:
        print("Access granted!")
        break                                          
    else:
        print("Incorrect password, try again.")

Output :

Enter the password: abc
Incorrect password, try again.

Enter the password: root1234
Access granted!

Example 4: To Print Even Numbers Between 1 and 10

number = 2

while number <= 10:
    print(number)
    number = number + 2

Output :

2
4
6
8
10

Example 5: ATM Withdrawal

balance = 1000


while True:
    withdrawal = int(input("Enter amount to withdraw: "))
    
    if withdrawal > balance:
        print("Insufficient funds. Your balance is:", balance)
    else:
        balance -= withdrawal
        print("Withdrawal successful. New balance is:", balance)
        break 

Output :

Enter amount to withdraw: 1500
Insufficient funds. Your balance is: 1000
Enter amount to withdraw: 500
Withdrawal successful. New balance is: 500

Example 6: Password Retry Limits

correct_password = "securePass"
attempts_left = 3


while attempts_left > 0:
    password = input("Enter the password: ")
    
    if password == correct_password:
        print("Access granted!")
        break 
    else:
        attempts_left -= 1
        print("Incorrect password. Attempts left:", attempts_left)

if attempts_left == 0:
    print("Too many failed attempts. Access denied.")

Output :

Enter the password: wrong1
Incorrect password. Attempts left: 2
Enter the password: wrong2
Incorrect password. Attempts left: 1
Enter the password: securePass
Access granted!