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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 in opts argument is either a list or a namespace containing the attribute 'extensions' and runs validations on it accordingly. If opts is neither of those things, this will raise a ValueError :param opts: either a list of strings or a namespace with the attribute 'extensions' :raises ValueError: if the value passed in is not a list or a namespace with the attribute 'extensions' :raises ValidationException: if the extensions fail validations :return: True if extensions pass the validations """

    if hasattr(opts, 'extensions'):
        return _validate(opts.extensions)
    elif isinstance(opts, list):
        return _validate(opts)
    else:
        raise ValueError("Value passed into extension validation must either "
                         "be a list of strings or a namespace with an "
                         "attribute of 'extensions'")