[Tutor] Class errors

Cameron Simpson cs at zip.com.au
Thu Jan 22 22:31:27 CET 2015

On 22Jan2015 17:11, jarod_v6 at libero.it <jarod_v6 at libero.it> wrote:
>I created a class that invoke  from another file another class
> I get an error that I do not understand: gobal name Job is not defined
>However If I see the class imported I found the class Job.
>Any suggestion or example on class invoke another class

First, please cut/paste error messages, filenames and code. Do not hand type 
them, as that introduces errors.


For example, I suspect you mean "job.py", not "job,py".

>class Jobs:
>    .....
>from core.job import *

It is not recommended to import "*". Just impor the names you need. It avoids 
_unexpected_ names leaking into your program: you might be using such a name 
for something else!

>class Second:
>    def __initi__:
>        tp = open("/tmp/file.txt")
>    def gus(self):
>        tr = Job()

Because you have hand typed things I cannot be sure - it may just be a mistake 
- but "job.py" defines a class "Jobs". In "trial.py" you use the name "Job".
Not the same!

Cameron Simpson <cs at zip.com.au>

Beware of bugs in the above code; I have only proved it correct, not tried it.
- Donald E. Knuth

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