Prime Number program in Python

A prime number is a number that has only two factors: 1 and the number itself. For example, 2, 3, 5, 7 and 11 are the first few prime numbers. Write a program that repeatedly prompts a user for numbers until the user enters a positive larger number. Once a valid number is entered, print out the list of prime number from 0 to the entered number. If the user enters anything other than a valid number MO it with a try/except and put out an appropriate message and ignore the number. For example, enter -1, bob and 10 and match the output below. 

Enter a positive integer number: -1 

The number must be positive. 

Enter a positive integer number: bob 

The number must be a positive number. 

Enter a positive integer number: 10 

The prime numbers from 0 to 10: 2 3 5 7 

 while True:
    try:
        n = int(input("Enter a positive integer number: "))
        if n <= 0:
            print("The number must be a positive.")
        else:
            print("The prime numbers from 0 to {}:".format(n))
            for i in range(1, n + 1):
                is_prime = i > 1
                for j in range(2, i):
                    if i % j == 0:
                        is_prime = False
                if is_prime:
                    print(i, end=' ')
            print()
            break
    except:
        print("The number must be a positive number.")

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