(hotfix/#34): Clear the output when the error is corrected.

[feat7]

Fixes #34
Also shows 'Write code to see something!' message when the code is not written.

[ethanchewy]

So, the issue occurs during the check function is called not when the run function is called.

Your logic makes sense but it shouldn't be put in the print_result but rather this check should be put in check_syntax specifically to check if the Editor is empty or if there are no errors in outputted by the function

Thanks for the pull request and let me know if you have any questions!

[ethanchewy]

Thanks for the pull request - I appreciate it.

Left a comment. Please let me know if you have any questions!

The main issue is that this check should be put during the AJAX check_code call not during the run_code and should check if the Editor is empty or if the error list is empty

[feat7]

The real problem is not anywhere in the java script code. It is in the python code to run the code.
When the input is empty, the stdin or stdout gives the previous input that is available there.
ie. It doesn't flush previous stdin/stdout.

[ethanchewy]

Error fixed: 43bd71a