On Mon, Jun 8, 2009 at 7:23 PM, lczancanella<lczancane...@gmail.com> wrote: > 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)
`CifradorDeCesar` is an instance method of the class `Funcoes`, and thus can only be used on instances of the class, *NOT the class itself*. Since it appears to be just a normal function (as suggested by the name of the class and the fact that it lacks `self` as its first parameter), you should scrap the class entirely and just define `CifradorDeCesar` in the toplevel body of the module. Unlike Java, it is *not* good Python style to unnecessarily cram functions into classes. Cheers, Chris -- http://blog.rebertia.com -- http://mail.python.org/mailman/listinfo/python-list
