Question

python program

6 Write an input validation loop that asks the user to enter a number in the range of 100 through 1000?

7 Write an input validation loop that asks the user to enter ‘Y’, ‘y’, ‘N’, or ‘n’?

8 How many times the following loop will repeat?

cnt = 0
   while  cnt != 5:
print(cnt)
cnt = cnt + 2

Answer 1

n = int(input("enter a number in the range of 100 through 1000: "))
if(n>=100 and n<=1000):
    print(n,"is a valid number")
else:
    print(n, "is an invalid number")

ch = input("enter ‘Y’, ‘y’, ‘N’, or ‘n’: ")
if(ch=='y' or ch=='Y' or ch=='n' or ch=='N'):
    print(ch,"is valid input")
else:
    print(ch, "is invalid input")

Loop runs infinite times.
Because the condition "cnt != 5" never becomes true at all