[Tutor] 'open' is not defined

[Steven D'Aprano]

On Thu, Jul 30, 2015 at 11:41:56PM +0000, ltc.hotspot at gmail.com wrote:
> Hi Everyone:
> 
> 
> Why is open not defined in the following code:NameError: name 'open' is not defined

Are you still running your code on the PythonTutor website?

http://pythontutor.com/visualize.html

says in the fine-print at the bottom of the page:

    "Online Python Tutor currently supports five languages (despite 
    its name!):

    1. Python 2.7 and 3.3 with limited module imports and no file I/O."


So open() is not defined because the Online Python Tutor website has 
removed it.

By the way, I tried working with that website for a little while. It is 
*amazingly* slow and clunky and painful to use on my computer. I don't 
know how you can bear to use it. Have you considered installing Python 
on your computer and working directly on that?



-- 
Steve