Python Programming – John Zelle: Chapter 3 ex. 13

Write a program to sum a series of numbers entered by the user.
The program should first prompt the user how many numbers are to be summed.
It should then input each of the numbers and print a total sum.

Run =
This program adds series of numbers entered by the user
How many numbers do you want to sum? 6
Enter a number: 2
Enter a number: 45
Enter a number: 3
Enter a number: 77
Enter a number: 2
Enter a number: 3
The total value of your 6 numbers is 132

**************************
While the code above works it will fail if a user enters a letter instead of a number.
I edited the code to force valid numbers