[Tutor] NameError: <nothing> is defined

[Andre Engels]

On Wed, Jul 20, 2011 at 4:37 AM, brandon w <thisisonlyatest at gmx.com> wrote:

> **
> Hi
> I am running Linux with Python 2.6.6. I have done lists, tuples,
> dictionaries, etc. Now I want to move on to creating a "class". I keep
> getting an error for everything I try. Here is the error: *
>
> NameError: name 'MyClass' is not defined*
>
> I had originally tried to create my own class by watching some video
> tutorials. Nothing worked. Then from the python2.6-doc documentation I just
> decided to copy and paste from the documentation.
>
>  *class MyClass:
>     """A simple example class"""
>     i = 12345
>     def f(self):
>         return 'hello world'*
>
>
> *>>> MyClass
> Traceback (most recent call last):
>   File "<stdin>", line 1, in <module>
> NameError: name 'MyClass' is not defined*
>
> Still the same error. What am I doing wrong?
> I tried this in gnome-terminal in a Python shell and using IDLE.
>
> First I do: *import myscript.py
> *(no errors)*
> *
> Then I run: *MyClass*
> (error)
>
> I try:  n = *MyClass()*
> (error)
>
> I try:
> *MyClass.n
> n.MyClass
> i.MyClass
> MyClass.i
> i.MyClass()
> f.MyClass
> f.MyClass()*
>
> (nothing but errors)
>

You have to specify where MyClass lives. In this case it's in myscript.py.
So you have to do:

import myscript    #Note: without .py
n = myscript.MyClass()

or:

from myscript import MyClass
n = MyClass()

-- 
André Engels, andreengels at gmail.com
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