Some Newbie Questions

[Larry Bates]

On question #1: I see this question a lot on
this list, but I'm curious about why you don't
want to instantiate the class?  I can't think
of a reason not to and am very curious if I'm
missing something here???

On question #2:

I normally write my programs so that they can be
called with an option on the processor call line
to override the "config-file".  Something like:

python foo.py -i newconfigfile.ini

Then I use ConfigParser to read the options from
the .INI file.  This provides unlimited flexibility
in having .INI files to drive the program.

I find that reading config parameters from an
external .INI file to be superior to putting
values in a .PY file and importing it.  I know
others on this list may differ.

On question #3:

I use loggerclass to keep trace/debug information
in a logfile as the program executes.  Actually I
normally have debug "levels" that give increasingly
more information as the number increases.  I read
these from .INI file but allow user to override the
.INI file on the processor call line.

Example:

python foo.py -t -d 2

would turn trace on and debug at level 2

Then put lines in your code like:

if trace: log("Entering function a")

HTH,
Larry Bates
Syscon, Inc.


"Leopold Schwinger" <leoel at gmx.at> wrote in message
news:40b47710 at e-post.inode.at...
> Hello!
>
> I am a really newbie to python, and I have some questions. I couldn't
> find anything in the manual, so it would be nice if you could help me.
>
> (1) Is there any operator in Python in order to call a Member-Function
> from a class without creating an instance of the class? (In C++ and PHP
> there ist this operator "::" <class>::<memberfunction>)
>
> (2) Is there any way to dynamically import modules, where the name of
> the module is not known during implementation but can be defined durch
> scipt execution? Think of lots of different config-Files, which differ
> by Path & Name but the variables are all named equal, and i want to
> import a special config-File during the execution of the script.
>
> (3) Is there any way to obtain a kind of "trace"-Info (the actual
> filename and codeline) in order to provide some debug-Info in the case
> of errors (In C++ and PHP there are these "__line__" and "__file__"
> functions, For Python I have only found <Class>.__dict__ and dir(<Class>))
>
> Thank you very much,
> Leo