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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_attrs_to_uppercase(obj: Any, attrs: Iterable[str]) -> None: """ Converts the specified attributes of an object to upper case, modifying the object in place. """

    for a in attrs:
        value = getattr(obj, a)
        if value is None:
            continue
        setattr(obj, a, value.upper())