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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 ensure_a_list(data):
 """Ensure data is a list or wrap it in a list"""

    if not data:
        return []
    if isinstance(data, (list, tuple, set)):
        return list(data)
    if isinstance(data, str):
        data = trimmed_split(data)  # settings.toml,other.yaml
        return data
    return [data]