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Logger module in python

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  Logger module in python smilesonisamal@gmail.com - 2013-12-17 19:22 -0800
    Re: Logger module in python Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-12-18 03:27 +0000
    Re: Logger module in python Paul Smith <paul@mad-scientist.net> - 2013-12-17 22:46 -0500
    Re: Logger module in python Roy Smith <roy@panix.com> - 2013-12-17 22:54 -0500
    Re: Logger module in python rusi <rustompmody@gmail.com> - 2013-12-17 20:32 -0800

#62258 — Logger module in python

Hi,
  I am a newbie in python. I am looking for a existing module which I can import in my program to log the objects to a file?

I know there is a module Data::Dumper in perl which dumps the objects to file. But not sure about python.

Can anybody help me in this regard?

Regards
Pradeep

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#62259

On 18/12/2013 03:22, smilesonisamal@gmail.com wrote:
> Hi,
>    I am a newbie in python. I am looking for a existing module which I can import in my program to log the objects to a file?
>
> I know there is a module Data::Dumper in perl which dumps the objects to file. But not sure about python.
>
> Can anybody help me in this regard?
>
> Regards
> Pradeep
>

http://docs.python.org/3/library/logging.html

-- 
My fellow Pythonistas, ask not what our language can do for you, ask 
what you can do for our language.

Mark Lawrence

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#62266

On Wed, 2013-12-18 at 03:27 +0000, Mark Lawrence wrote:
> On 18/12/2013 03:22, smilesonisamal@gmail.com wrote:
> > Hi,
> > I am a newbie in python. I am looking for a existing module which I
> can import in my program to log the objects to a file?
> >
> > I know there is a module Data::Dumper in perl which dumps the
> objects to file. But not sure about python.
> 
> http://docs.python.org/3/library/logging.html

That's not what the OP wants.

Pradeep, if you want to dump data for debugging take a look at the
pprint module; for example:

http://docs.python.org/3.3/library/pprint.html

If you want to store Python objects in files and read them later, most
people seem to use pickle for that:

http://docs.python.org/3.3/library/pickle.html

Others translate into another format.

See this SO question for some other suggestions:

http://stackoverflow.com/questions/2540567/is-there-a-python-equivalent-to-perls-datadumper

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#62267

In article <fabe3b07-3d2f-48f2-9e56-2fdebff39175@googlegroups.com>,
 smilesonisamal@gmail.com wrote:

> Hi,
>   I am a newbie in python. I am looking for a existing module which I can 
>   import in my program to log the objects to a file?
> 
> I know there is a module Data::Dumper in perl which dumps the objects to 
> file. But not sure about python.


You're talking about what's known as serializing an object.  Taking the 
in-memory representation and turning it into something that can be 
written into a network connection or into a file, then read back in, and 
turned back into an in-memory object.

The standard way to do this in Python is pickle 
(http://docs.python.org/2/library/pickle.html).  Depending on the type 
of data you have, you might want to use JSON encoding instead 
(http://docs.python.org/2/library/json.html), but pickle is probably the 
most similar to Data::Dumper.

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#62273

On Wednesday, December 18, 2013 8:52:11 AM UTC+5:30, smileso...@gmail.com wrote:
> Hi,
>   I am a newbie in python. I am looking for a existing module which I can import in my program to log the objects to a file?

> I know there is a module Data::Dumper in perl which dumps the objects to file. But not sure about python.

Assuming you are looking for a serialization format:
If efficiency, easily-at-hand, standard are important then
pickle better than json better than yaml

If however readability of the output (as the word 'log' suggests) is desired
its the other way round: yaml is the most readable, pickle is utterly unreadable

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