Hello Forest ! > Hi Christoph, > > On Mon, Jan 10, 2011 at 11:04:50PM +0100, Christoph Holtermann wrote: >> My interest in gnucash is to have a python-shell-environment which lets me >> easily access and display data. I have written some things for myself like >> simple functions PrintTransaction(Transaction) and so for other objects. > You should generally avoid CamelCase for function and instance names in Python > code. CamelCase should be used for class names. PEP 8 is a good style > reference: > > http://www.python.org/dev/peps/pep-0008/ Thank you very much for that advice. >> I use IPython for that purpose. I would like to submit my tries in that >> direction but for myself I would like to find the best solution for at least >> these printing functions before I do to not submit something too preliminary. >> >> I wonder in which way a function that prints an complex object should be >> done. >> >> When looking around in the internet i saw things like object.prettyPrint(). I >> came across object.__format__(). > You most likely want to use __str__ and/or __unicode__. > > http://docs.python.org/reference/datamodel.html#object.__str__ > > I suggest reading this page: > > http://stackoverflow.com/questions/1307014/python-str-versus-unicode > > The Python documentation doesn't seem to cover __unicode__ very well... > > __repr__ may also be of interest. Ok, I will have a look. I just hesitate to overwrite things I don't really understand ;-)) So I tend to start with adding a function of my own and then get down afterwards. >> When I print out for example a transaction i want to print out information of >> objects that are nested into it. For example I would probably also to print >> out the splits. >> >> I would like to have some function of the objects that are always called the >> same way. In the end I would like to have something as easy as >> >> print object. > If you implement __str__/__unicode__ methods, you can just do this: What would be the best way to control the amount of information that the functions prints out. Would it be useful to have a config object which the functions accesses or would it be more useful to use a parameter ?
In another program of mine i wrote __format__() functions which i provides with an option verbose=(Boolean). But it's not possible to say format(object, verbose=True) and i stick with print object.__format__(verbose=True) which is not actually very handy ;-) >>>> print obj > Hope this helps. Thanks ! > Thanks, > Forest regards, Christoph _______________________________________________ gnucash-devel mailing list gnucash-devel@gnucash.org https://lists.gnucash.org/mailman/listinfo/gnucash-devel
