Importing Classes from child folders.

[monosij . forums]

Trying to do some OO Python with files in different directories.
I have a blank __init__.py in each directory.
It is my assumption that having an __init__.py marks the directory as a module.
I am trying to run Controller.py from the command line.

I would assume this has already been solved but could not find in forum
I am somewhat new to Python. Using Python3 under Ubuntu.
...
So I have a project structure as follows:
...
ProjectX (root folder)
__init__.py
Controller.py
+ service (folder under ProjectX)
  __init__.py
  SystemSetup.py (has a class SystemSetup)
+ model (folder under ProjectX)
  __init__.py
  Directory.py (has a class Directory)

In Controller.py if I want to use SystemSetup class, I do:
from service.SystemSetup import SystemSetup
...
and in Controller Class I have:
def main():
systemSetup = SystemSetup()

I get error:
  File "Controller.py", line 4, in 
  from service.SystemSetup import SystemSetup
ImportError: cannot import name SystemSetup

What am I doing wrong? I am running from the command line.
Do I need to set the project in PYTHONPATH first?

But if SystemSetup and Directory are in same directory as Controller I have no 
problems.

Your help would be highly appreciated.
...
Btw I also tried:
import sys, os.path
sys.path.append(os.path.abspath(os.path.join(os.path.dirname(__file__), 
os.path.pardir)))
from service.SystemSetup import SystemSetup
...
No luck.

Thank you again.

Monosij
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pycache directories

[monosij . forums]

I am doing some OO python3 where I am using multiple dirs/sub-dirs.

So everything works fine, however when I run code __pycache__ directories are 
being created in every directory touched by the execution.

Is it possible to set a configuration to be able to create these pycache 
directories in a specific location?

Coming from the Java world - am used to the /src, /bin aspects - so somewhat 
prefer the 'executables' out of the way.

I am using python3 on Ubuntu so wondering if there is some environ setting?

Thanks for your help.
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Re: pycache directories

[monosij . forums]

On Tuesday, January 22, 2013 1:01:44 AM UTC-5, Terry Reedy wrote:
> 
> > I am doing some OO python3 where I am using multiple dirs/sub-dirs.
> 
> >
> 
> > So everything works fine, however when I run code __pycache__
> 
> > directories are being created in every directory touched by the
> 
> > execution.
> 
> 
> 
> This is much better than having multiple .pyc files in every directory, 
> 
> as in Py2. You should soon learn to ignore them.
> 
> 
> 
> > Is it possible to set a configuration to be able to create these
> 
> > pycache directories in a specific location?
> 
> 
> 
> No. (I am very sure.) You can however, not have the .pyc files written, 
> 
> but that means recompile with every run. So that option is meant for 
> 
> running off a read-only medium.
> 
> 
> 
> -- 
> 
> Terry Jan Reedy

Thanks Terry. I understand needing to adjust.
Appreciate this forum.

Monosij
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