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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 stringify(data):
 """Turns all dictionary values into strings"""

    if isinstance(data, dict):
        for key, value in data.items():
            data[key] = stringify(value)
    elif isinstance(data, list):
        return [stringify(item) for item in data]
    else:
        return smart_text(data)

    return data