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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 _find_base_type(data_type):
 """Find the Nani's base type for a given data type. This is useful when Nani's data types were subclassed and the original type is required. """

    bases = type(data_type).__mro__
    for base in bases:
        if base in _ALL:
            return base

    return None