OK, I think I'm close now. I just can't get past this one error. Here
is my code, followed by the output produced when I run it.
class Magic(type):
def __new__(cls, name, bases, d):
for name, function in d.items():
try:
function._marked
print 'Class: %s' % cls
print 'Method: %s' % name
def toXML(self, *args, **kwargs):
return
self._toXML(function(self, *args, **kwargs))
def toList(self, *args, **kwargs):
return
self._toList(function(self, *args, **kwargs))
d[name+'XML'] = toXML
d[name+'List'] = toList
except AttributeError:
#traceback.print_exc()
pass
return type(name, bases, d)
def mark(f):
f._marked = True
return f
class test(object):
def _toXML(self, value):
return '<xml>%s</xml>' % value
def _toList(self, value):
return '<list>%s</list>' % value
class testtest(test):
__metaclass__ = Magic
@mark
def printData(self, data):
return 'child-%s' % data
t = testtest()
print t.printData('data')
print t.printDataXML('data')
print t.printDataList('data')
===========OUTPUT=========
Class: <class '__main__.Magic'>
Method: printData
child-data
Traceback (most recent call last):
File "test.py", line 43, in ?
print t.printDataXML('data')
File "test.py", line 11, in toXML
return self._toXML(function(self, *args, **kwargs))
TypeError: __new__() takes exactly 4 arguments (3 given)
Diez B. Roggisch wrote:
> WakeBdr schrieb:
> > Diez,
> > I get what that accomplishes now, but I'm having problems in my
> > implementation. I was able to write a standalone class that worked
> > correctly. However, in my code the class that I need to exhibit this
> > functionality inherits from another class. This seems to cause
> > problems when I attempt to implement you solution.
>
> You need to give a __metaclass__ to one of them, and I think they must
> be new-style-classes.
>
>
> Diez
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