Author Archives: tywins

This program sums a range of numbers given by the user. It’s not inclusive because the range function doesn’t include the last number of said range, as in, for example, if I wanted my range to be from 1 to 10 I would need to write it as range (1, 11), so it would leave out the number 11 and only take those 10 integers i wanted to include in the first place.

*Note: As for the part of the code that says s += i, i learnt it means the same as saying s = s + i so it’s sort of a shortcut for the part of the for statement that does the actual loop.

1. Open IDLE.
2. Open a new file.
3. Type your code as you would type it in any other editor.
4. Save it (don’t forget to save it as .py)
5. Then go to the top menu and click on Run > Run Module (F5 for shortcut), and that’s it.

This program allows you to sum numbers, until the while statement stops when you enter the number 0.

The program lacks complexity and verification of the relation username-password but I wanted to make it simple only to show the purpose of the else statement.

The screenshot is very self-explanatory, any line of code that you write in python will be ignored if you add # before said line.