Python program to print prime numbers

Question

I have started learning python and I am stuck in this code

num=int(input("Enter the number"))
for i in range(2, num):
    if num%i==0:
        print("Not a prime number")
        break
        print("Prime Number")

When I enter the number which are not prime, then I am getting output as not a prime number but when I am entering the number that is prime I am getting the output as

Prime number
Prime number
Prime number
Prime number
Prime number

Answer 1

You should only print it once, for example like this:

num = int(input("Enter the number"))
for i in range(2, num):
    if num % i == 0:
        print("Not a prime number")
        break
else:
    print("Prime Number")

Answer 2

The loop should check for all numbers and only then print not prime for example like this.

num=int(input("Enter the number"))
for i in range(2, num):
    if num%i == 0:
        print("Not a prime number")
        break
    if i > num/2:
        print("Prime Number")
        break

I would suggest you debug by including print statements that would help a beginner.

Answer 3

check this out:

num=int(input("Enter the number"))
for i in range(2, num//2):   
    if (num % i) == 0: 
        print(num, "is not a prime number") 
        break
else: 
    print(num, "is a prime number")` 

Answer 4

The last statement should be managed carefully in this code. Due to this it print in loop and take care of the tabs you shift.