On Jan 14, 1:20 pm, jerryji <[EMAIL PROTECTED]> wrote: > Hi, > > Sorry for this newbie question, I was puzzled why the existing > property of an object is not shown in the dir() function output. > > "v" is an lxml Element object variable -- > > In [44]: v > Out[44]: <Element 'documentProperties' at 0x8363cf8> > > In [45]: dir(v) > Out[45]: > ['__copy__', > '__deepcopy__', > '__reduce__', > 'append', > 'clear', > 'find', > 'findall', > 'findtext', > 'get', > 'getchildren', > 'getiterator', > 'insert', > 'items', > 'keys', > 'makeelement', > 'remove', > 'set'] > > dir() output doesn't contain the ".tag", which does exist -- > > In [46]: v.tag > Out[46]: 'documentProperties' > > what is the rule governing the display of a property from dir()?
You can also make properties by modifying the __getattr__ and __setattr__ methods of a class. When done that way it won't show up when dir is called. So it isn't necessarily a rule, just a different way of implementing a property. Matt -- http://mail.python.org/mailman/listinfo/python-list
