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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 validate(opts):
 """ Client-facing validate method. Checks to see if the passed int opts argument is either a string or a namespace containing the attribute 'wrapper' and runs validations on it accordingly. Note: this function currently does NOT support Unicode/Byte style strings, will need to do some work on Python 2/Python 3 compatibililty to add this in. :param opts: either a string or a namespace with the attribute 'extensions' :raises ValueError: if the value passed in is not a string or a namespace with the attribute 'wrapper' :raises ValidationException: if the wrapper fail validations :return: True if wrapper passes the validations """

    if hasattr(opts, 'wrapper') and isinstance(opts.wrapper, str):
        return _validate(opts.wrapper)
    elif isinstance(opts, str):
        return _validate(opts)
    else:
        raise ValueError("Argument passed into wrapper validation must either "
                         "be a single (non-Unicode) string, or a namespace "
                         "with an attribute of 'wrapper'")