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Pickle funktioniert nicht

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Pickle funktioniert nicht

Verfasst: Mittwoch 7. November 2012, 16:00
von leonards
Hallo,
ich habe ein Teil eines Programms, das nicht funktioniert.
Der fehlerhafte Code ist:

Code: Alles auswählen

self.stufe = str(self.stufe)
neu = {self.wort:[self.formen,self.geschlecht,self.deutsch,self.stufe]}
vokabeln = self.vokabeln
vokabeln.update(neu)
f = file('vokabeln.txt','w')
pickle.dump(vokabeln,f)
f.close()
Die Variablen exestieren alle, und sind auch im richtigen Typ.
Der fehler muss in diesem Programmteil sein, da der Fehler bei aufführen der Definition auftritt, die nur diesen Text beinhaltet. Die Fehlermeldung lautet:

Code: Alles auswählen

Exception in Tkinter callback
Traceback (most recent call last):
  File "C:\Python27\lib\lib-tk\Tkinter.py", line 1410, in __call__
    return self.func(*args)
  File "D:\Programmieren\Python\Daten\Programme\no-console\vokabeln\einzeln.pyw", line 49, in event
    self.veraendern()
  File "D:\Programmieren\Python\Daten\Programme\no-console\vokabeln\einzeln.pyw", line 60, in veraendern
    pickle.dump(vokabeln,f)
  File "C:\Python27\lib\pickle.py", line 1370, in dump
    Pickler(file, protocol).dump(obj)
  File "C:\Python27\lib\pickle.py", line 224, in dump
    self.save(obj)
  File "C:\Python27\lib\pickle.py", line 286, in save
    f(self, obj) # Call unbound method with explicit self
  File "C:\Python27\lib\pickle.py", line 649, in save_dict
    self._batch_setitems(obj.iteritems())
  File "C:\Python27\lib\pickle.py", line 663, in _batch_setitems
    save(v)
  File "C:\Python27\lib\pickle.py", line 286, in save
    f(self, obj) # Call unbound method with explicit self
  File "C:\Python27\lib\pickle.py", line 600, in save_list
    self._batch_appends(iter(obj))
  File "C:\Python27\lib\pickle.py", line 615, in _batch_appends
    save(x)
  File "C:\Python27\lib\pickle.py", line 286, in save
    f(self, obj) # Call unbound method with explicit self
  File "C:\Python27\lib\pickle.py", line 725, in save_inst
    save(stuff)
  File "C:\Python27\lib\pickle.py", line 286, in save
    f(self, obj) # Call unbound method with explicit self
  File "C:\Python27\lib\pickle.py", line 649, in save_dict
    self._batch_setitems(obj.iteritems())
  File "C:\Python27\lib\pickle.py", line 663, in _batch_setitems
    save(v)
  File "C:\Python27\lib\pickle.py", line 286, in save
    f(self, obj) # Call unbound method with explicit self
  File "C:\Python27\lib\pickle.py", line 725, in save_inst
    save(stuff)
  File "C:\Python27\lib\pickle.py", line 286, in save
    f(self, obj) # Call unbound method with explicit self
  File "C:\Python27\lib\pickle.py", line 649, in save_dict
    self._batch_setitems(obj.iteritems())
  File "C:\Python27\lib\pickle.py", line 663, in _batch_setitems
    save(v)
  File "C:\Python27\lib\pickle.py", line 286, in save
    f(self, obj) # Call unbound method with explicit self
  File "C:\Python27\lib\pickle.py", line 649, in save_dict
    self._batch_setitems(obj.iteritems())
  File "C:\Python27\lib\pickle.py", line 663, in _batch_setitems
    save(v)
  File "C:\Python27\lib\pickle.py", line 286, in save
    f(self, obj) # Call unbound method with explicit self
  File "C:\Python27\lib\pickle.py", line 725, in save_inst
    save(stuff)
  File "C:\Python27\lib\pickle.py", line 286, in save
    f(self, obj) # Call unbound method with explicit self
  File "C:\Python27\lib\pickle.py", line 649, in save_dict
    self._batch_setitems(obj.iteritems())
  File "C:\Python27\lib\pickle.py", line 663, in _batch_setitems
    save(v)
  File "C:\Python27\lib\pickle.py", line 313, in save
    (t.__name__, obj))
PicklingError: Can't pickle 'tkapp' object: <tkapp object at 0x026EDD78>
Exception in Tkinter callback
Traceback (most recent call last):
  File "C:\Python27\lib\lib-tk\Tkinter.py", line 1410, in __call__
    return self.func(*args)
  File "D:\Programmieren\Python\Daten\Programme\no-console\vokabeln\einzeln.pyw", line 49, in event
    self.veraendern()
  File "D:\Programmieren\Python\Daten\Programme\no-console\vokabeln\einzeln.pyw", line 60, in veraendern
    pickle.dump(vokabeln,f)
  File "C:\Python27\lib\pickle.py", line 1370, in dump
    Pickler(file, protocol).dump(obj)
  File "C:\Python27\lib\pickle.py", line 224, in dump
    self.save(obj)
  File "C:\Python27\lib\pickle.py", line 286, in save
    f(self, obj) # Call unbound method with explicit self
  File "C:\Python27\lib\pickle.py", line 649, in save_dict
    self._batch_setitems(obj.iteritems())
  File "C:\Python27\lib\pickle.py", line 663, in _batch_setitems
    save(v)
  File "C:\Python27\lib\pickle.py", line 286, in save
    f(self, obj) # Call unbound method with explicit self
  File "C:\Python27\lib\pickle.py", line 600, in save_list
    self._batch_appends(iter(obj))
  File "C:\Python27\lib\pickle.py", line 615, in _batch_appends
    save(x)
  File "C:\Python27\lib\pickle.py", line 286, in save
    f(self, obj) # Call unbound method with explicit self
  File "C:\Python27\lib\pickle.py", line 725, in save_inst
    save(stuff)
  File "C:\Python27\lib\pickle.py", line 286, in save
    f(self, obj) # Call unbound method with explicit self
  File "C:\Python27\lib\pickle.py", line 649, in save_dict
    self._batch_setitems(obj.iteritems())
  File "C:\Python27\lib\pickle.py", line 663, in _batch_setitems
    save(v)
  File "C:\Python27\lib\pickle.py", line 286, in save
    f(self, obj) # Call unbound method with explicit self
  File "C:\Python27\lib\pickle.py", line 725, in save_inst
    save(stuff)
  File "C:\Python27\lib\pickle.py", line 286, in save
    f(self, obj) # Call unbound method with explicit self
  File "C:\Python27\lib\pickle.py", line 649, in save_dict
    self._batch_setitems(obj.iteritems())
  File "C:\Python27\lib\pickle.py", line 663, in _batch_setitems
    save(v)
  File "C:\Python27\lib\pickle.py", line 286, in save
    f(self, obj) # Call unbound method with explicit self
  File "C:\Python27\lib\pickle.py", line 649, in save_dict
    self._batch_setitems(obj.iteritems())
  File "C:\Python27\lib\pickle.py", line 663, in _batch_setitems
    save(v)
  File "C:\Python27\lib\pickle.py", line 286, in save
    f(self, obj) # Call unbound method with explicit self
  File "C:\Python27\lib\pickle.py", line 725, in save_inst
    save(stuff)
  File "C:\Python27\lib\pickle.py", line 286, in save
    f(self, obj) # Call unbound method with explicit self
  File "C:\Python27\lib\pickle.py", line 649, in save_dict
    self._batch_setitems(obj.iteritems())
  File "C:\Python27\lib\pickle.py", line 663, in _batch_setitems
    save(v)
  File "C:\Python27\lib\pickle.py", line 313, in save
    (t.__name__, obj))
PicklingError: Can't pickle 'tkapp' object: <tkapp object at 0x026EDD78>
Vielen Dank für Hilfe.

Re: Pickle funktioniert nicht

Verfasst: Mittwoch 7. November 2012, 17:04
von BlackJack
@leonards: Die Meldung ist ziemlich deutlich: Du versuchst etwas mit `pickle` zu serialisieren was man nicht serialisieren kann. In diesem Fall ein Objekt was mit `Tk` zu tun hat. Versuche nur das nötigste zu serialisieren und nicht Objekte die Referenzen auf andere Objekte haben, die gar nicht wirklich relevant für die Daten sind. Was ist den `vokabeln` für ein Objekt?

Weitere Anmerkung: `pickle`-Daten sind Binärdaten und deshalb muss man Dateien im Binärmodus öffnen. Sonst kann es passieren, dass die Daten nicht wieder gelesen werden können. Ausserdem sollte man Dateien mit der ``with``-Anweisung verwenden, damit man sicher sein kann, dass sie unter allen Umständen auch geschlossen werden.

Re: Pickle funktioniert nicht

Verfasst: Mittwoch 7. November 2012, 17:48
von leonards
'vokabeln' ist ein dictionary, was ich vorher geöffnet habe

Re: Pickle funktioniert nicht

Verfasst: Mittwoch 7. November 2012, 18:26
von EyDu
leonards hat geschrieben:'vokabeln' ist ein dictionary, was ich vorher geöffnet habe
Dann zeig doch mal WIE du das Dictionary gefüllt hast. Wie es aussieht, scheinen darin ja einige Tkinter-Objekte gelandet zu sein.
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