3 – Best python program to print all prime numbers in an Interval

print("Please enter positive number greater then 1")
first_num = int(input("Enter first number : "))
last_num = int(input("Enter last number : "))

for i in range(first_num, last_num):
    if i>1:
        for j in range(2,i):
            if(i % j==0):
            break
    else:
        print(i)