Python – While Loop

while loop:

• We use while loop when we dont know the number of iterations.
• Examples: Reading a File, Display records in dataabse.

Syntax:               while(condition):                         statements;

Check the even numbers until user quits:

while(True):             n = int(input(“enter num : “))             if(n%2==0):                         print(n,”is even”)             else:                         print(n,”is odd”)               print(“Do you check another num(y/n) :”)             ch = input()             if(ch==’n’):                         break

Display Multiplication tables until user quits:

while(True):             n = int(input(“Enter table num : “))             for i in range(1,11):                         print(n,’*’,i,’=’,n*i)               print(“Do you print another table(y/n) :”)             ch = input()             if(ch==’n’):                         break