'Process list of string arguments to values according to spec.
Example:
>>> spec = Spec([(\'queue\', str), (\'if_unused\', bool)])
>>> spec.str_args_to_python(\'pobox\', \'true\')
(\'pobox\', True)'

def str_args_to_python(self, arglist):

    return tuple((self.coerce(index, value) for (index, value) in enumerate(arglist)))
