diff options
| -rw-r--r-- | Lib/pickle.py | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/Lib/pickle.py b/Lib/pickle.py index 37c3d52..201dc99 100644 --- a/Lib/pickle.py +++ b/Lib/pickle.py @@ -222,6 +222,11 @@ class _Pickler: def dump(self, obj): """Write a pickled representation of obj to the open file.""" + # Check whether Pickler was initialized correctly. This is + # only needed to mimic the behavior of _pickle.Pickler.dump(). + if not hasattr(self, "write"): + raise PicklingError("Pickler.__init__() was not called by " + "%s.__init__()" % (self.__class__.__name__,)) if self.proto >= 2: self.write(PROTO + bytes([self.proto])) self.save(obj) @@ -789,6 +794,11 @@ class _Unpickler: Return the reconstituted object hierarchy specified in the file. """ + # Check whether Unpickler was initialized correctly. This is + # only needed to mimic the behavior of _pickle.Unpickler.dump(). + if not hasattr(self, "read"): + raise UnpicklingError("Unpickler.__init__() was not called by " + "%s.__init__()" % (self.__class__.__name__,)) self.mark = object() # any new unique object self.stack = [] self.append = self.stack.append |