Prime Numbers python

Question

I\'m a beginning programmer in python and have a question about my code I\'m writing:

number = int(input(\"Enter a random number: \"))

for num in range(1, n         


        

Answer 1

Your problem

The else statement that you put inside the for loop means that if that number(num) is divisible by this current no represented by i, return true considering it as a prime which IS NOT CORRECT.

Suggestion

Your outer loop starts with 1 which should change to 2, as 1 is not a prime number

Solution

def fun(number):
 #Not counting 1 in the sequence as its not prime
 for num in range(2, number + 1) :
    isPrime = True
    for i in range(2, num) :
         if (num % i) == 0 :
        isPrime = False  
            break
    if isPrime:
        print num
fun(10) 

Output

1

2

3

5

7