On Thu, Apr 21, 2016 at 7:52 PM, Paulo da Silva <p_s_d_a_s_i_l_v_a...@netcabo.pt> wrote: > Às 22:43 de 21-04-2016, Paulo da Silva escreveu: >> Hi. >> >> Why in this code fragment self.__name is not kept between pickle >> dumps/loads? How to fix it? >> >> Thanks. >> >> import pickle >> import pandas as pd >> import numpy as np >> >> class C(pd.DataFrame): >> def __init__(self,name,*a,**b): >> super(C,self).__init__(*a,**b) >> self.__name=name >> >> def GetName(self): >> return self.__name >> > # Adding this works but looks tricky! > > def __getstate__(self): > dfstate=super(C,self).__getstate__() > cstate=(dfstate,self.__name) > return cstate > > def __setstate__(self,cstate): > super(C,self).__setstate__(cstate[0]) > self.__name=cstate[1]
Probably this is necessary because the DataFrame class is already customizing its pickle behavior without taking into account the possibility of added attributes by subclasses. I think that your solution of wrapping the state of the superclass looks fine. -- https://mail.python.org/mailman/listinfo/python-list
