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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 _convert_params(sql, params):
 """Convert SQL and params args to DBAPI2.0 compliant format."""

    args = [sql]
    if params is not None:
        if hasattr(params, 'keys'):  # test if params is a mapping
            args += [params]
        else:
            args += [list(params)]
    return args