Python Apply Decorator To Every Method In A Class Without Inspect

Slightly modifying the answer from Applying python decorators to methods in a class, it is possible to apply a decorator to every method in a class. Is there any way to do this wit

Solution 1:

Define a meta class and then just apply decorator at the end of class definition.

classClassname:
   deffoo(self): passfor name, fn in inspect.getmembers(Classname):
    ifisinstance(fn, types.UnboundMethodType):
        setattr(Classname, name, decorator(fn))

For Python 3 just replace the types.UnboundMethodType with types.FunctionType.

but if you really don;t wanna use inspect than you can do it like this

import types

classDecoMeta(type):
   def__new__(cls, name, bases, attrs):

      for attr_name, attr_value in attrs.iteritems():
         ifisinstance(attr_value, types.FunctionType):
            attrs[attr_name] = cls.deco(attr_value)

      returnsuper(DecoMeta, cls).__new__(cls, name, bases, attrs)

   @classmethoddefdeco(cls, func):
      defwrapper(*args, **kwargs):
         print"before",func.func_name
         func(*args, **kwargs)
         print"after",func.func_name
      return wrapper

classMyKlass(object):
   __metaclass__ = DecoMeta

   deffunc1(self): 
      pass

MyKlass().func1()

Output:

before func1 after func1

Note: it will not decorate staticmethod and classmethod