why this code is not giving any output

Question

num = int(input())
def prime(num):
flag = False
if num > 1:
for i in range(2,num+1):
if num % i ==0:

flag = True

break

if flag is True:
print(f"{num} is a prime")
else:
print(f"{num} is not a prime")

Answer 1

The function prime is never called. You should call the function by the name:

prime(num)

Answer 2

Hi! you implemented all the functionality of the program in the form of a function. but you dont call the function anywhere else