[Tutor] EXE Problem

[Dave Angel]

On 06/19/2013 02:50 AM, Jack Little wrote:
> I compiled a program in python, but the second I open it, there is a flash of the error, but then the cmd window closes.
>

It compiles when you run it, so it's not clear what extra step you're 
describing here.

Quite a bit of missing information here, so let's do some guessing.

You're running some version of Windows?

You're running Python 3.3 ?

You're launching what you think is a useful program, directly from 
Explorer, using double-click, or with right-click-OpenWith ??  Python 
programs don't have an EXE extension, so perhaps you're not actually 
double clicking on the right thing.  Or perhaps you've neglected to 
change Windows brain-dead default of NOT showing file extensions in 
Explorer.

When a non-GUI program starts from Explorer, Windows helpfully creates a 
command window, then helpfully destroys it before you can read the 
results if any.

If you know your program is correct, and you just want to see the 
output, you'll need to put some form of pause at the end of your 
program.  This could be a sleep(3) if you're a speed reader, or it could 
be just an input() statement.

But if the program is flawed, such as a syntax error, you might never 
reach the pause.  So you might as well get used to the following:

Run your program at a cmd prompt, inside a "DOS Box", or "Command 
Window", or one of several other names used in various Windows versions. 
  It's actually a shell, but Windows doesn't use that term.

-- 
DaveA