I am out of trial and error again Lists

[Seymore4Head]

On Fri, 24 Oct 2014 20:27:03 -0400, Terry Reedy <tjreedy at udel.edu>
wrote:

>On 10/24/2014 6:27 PM, Seymore4Head wrote:
>
>> I promise I am not trying to frustrate anyone.  I know I have.
>
>Seymore, if you want to learn real Python, download and install 3.4.2 
>and either use the Idle Shell and Editor or the interactive console 
>interpreter and a decent programmer editor.
>
>I cannot recommend CodeSkulptor to anyone.  The opening statement
># CodeSkulptor runs Python programs
>is deceptive.  CodeSkulptor Python is not Python. It does not correspond 
>to any x.y version of Python. It is a somewhat crippled subset of 
>ancient Python (2.1) with selected additions of later features.  It does 
>not have exceptions, raise, and try: except:.  These are an essential 
>part of original Python and Python today  It does not have complex 
>(maybe introduced in 1.5) and unicode (introduced in 2.0).  Let that 
>pass.  More important, it does not have new-style classes, an essential 
>new feature introduced in 2.2.  Python beginners should start with 
>unified new-styled classes.  If lucky, they need never learn about the 
>original old style, dis-unified type versus class system that started 
>going away in 2.2, is mostly gone in 2.7. and completely gone in 3.0.
>
>If you really want to continue with CodeSkulpter Python, you should find 
>a CodeSkulpterPython list.  You cannot expect people here to know that 
>legal code like
>   class I(int): pass
>will not run, but will fail with an exceeding cryptic message:
>   Line 1: undefined: TypeError: a.$d is undefined
>Nor can you expect us to know all the other limitations.
>
>This is a list for Python.  If you want help here, get and use a real 
>Python interpreter, with a proper interactive mode, as multiple people 
>have suggested.

OK.  I will.
Thanks

But the difference between Python 2 and Codeskulptor was not an issue
with this question.