Unbound Method Error

[lczancanella]

Hi, i am brand new in Python, so sorry if this question is too basic,
but i have tried a lot and dont have success... I have the following
code...

class Funcoes:
    def CifradorDeCesar(mensagem, chave, funcao):
        mensagem_encriptada=''
        if funcao == 1:
            for byte in mensagem:
                if byte.isalpha():
                    byte_encriptado=chr(ord(byte)+chave)
                    if byte.isupper() and ord(byte_encriptado) > 90:
                        byte_encriptado=chr(ord(byte_encriptado)-26)
                    if byte.islower() and ord(byte_encriptado) > 122:
                        byte_encriptado=chr(ord(byte_encriptado)-26)
                else:
                    byte_encriptado=byte
                mensagem_encriptada+=byte_encriptado
        else:
            for byte in mensagem:
                if byte.isalpha():
                    byte_encriptado=chr(ord(byte)-chave)
                    if byte.isupper() and ord(byte_encriptado) < 65:
                        byte_encriptado=chr(ord(byte_encriptado)+26)
                    if byte.islower() and ord(byte_encriptado) < 97:
                        byte_encriptado=chr(ord(byte_encriptado)+26)
                else:
                    byte_encriptado=byte
                mensagem_encriptada+=byte_encriptado

        return mensagem_encriptada

class MC(Funcoes, type):
    def __init__(cls, clsname, bases, ns):
        def addtrace(f):
            def t(self, *args, **kwargs):
                for att in self.__crypt__:
                    atribcripto = getattr(self, att)
                    atribdescripto = Funcoes.CifradorDeCesar
(atribcripto, 3, 2)
                    setattr(self, att, atribdescripto)
                ret = f(self, *args, **kwargs)
                for att in self.__crypt__:
                    atribdescripto = getattr(self, att)
                    atribcripto = Funcoes.CifradorDeCesar
(atribdescripto, 3, 1)
                    setattr(self, att, atribcripto)
                # aqui seta __signature__ vazio, assina e atribui
__signature__
                return ret
            return t
        from types import FunctionType
        for name,obj in ns.items():
            if type(obj) == FunctionType:
                setattr(cls, name, addtrace(ns[name]))

class C():

    __metaclass__ = MC
    __crypt__ = ["_a", "_b"]

    _a = 1
    _b = 2

    def add(self, a, b):
        _a = a
        _b = b
        return a+b

then i call

>>> i = C()
>>> i.add(2,2)

and the error:

File "C:\Users\Junior\Desktop\Python\T2.py", line 37, in t
    atribdescripto = Funcoes.CifradorDeCesar(atribcripto, 3, 2)
TypeError: unbound method CifradorDeCesar() must be called with
Funcoes instance as first argument (got int instance instead)