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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 list_opts():
 """List all conf modules opts. Goes through all conf modules and yields their opts. """

    for mod in load_conf_modules():
        mod_opts = mod.list_opts()
        if type(mod_opts) is list:
            for single_mod_opts in mod_opts:
                yield single_mod_opts[0], single_mod_opts[1]
        else:
            yield mod_opts[0], mod_opts[1]