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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def to_python(self, value):
 """ B64decode and unpickle the object, optionally decompressing it. If an error is raised in de-pickling and we're sure the value is a definite pickle, the error is allowed to propogate. If we aren't sure if the value is a pickle or not, then we catch the error and return the original value instead. """

        if value is not None:
            try:
                value = dbsafe_decode(value, self.compress)
            except:
                # If the value is a definite pickle; and an error is raised in
                # de-pickling it should be allowed to propogate.
                if isinstance(value, PickledObject):
                    raise
        return value