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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 tofile(self, file_):
 """ Dump all storage data to a file. The file_ argument can be a file object or a string that represents a filename. If called with a file object, it should be opened in binary mode, and the caller is responsible for closing the file. The method should only be called after the storage device has been closed to ensure that the locked flag has been set to False. """

        close_file = False
        if not hasattr(file_, 'write'):
            file_ = open(file_, 'wb')
            close_file = True
        file_.write(self._f)
        if close_file:
            file_.close()