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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 load_from_file_object(cls, fd, format=None):
 """ Load the object from a given file like object in the given format. """

        format = 'pickle' if format is None else format
        load = getattr(cls, "load_%s" % format, None)
        if load is None:
            raise ValueError("Unknown format '%s'." % format)
        return load(fd)