def get_value(self, values, kwargs):
    separator = kwargs.get('separator', os.pathsep)
    value = ''
    for var in values:
        value += (separator + var)
    return (separator, value.strip(separator))
def get_value(self, values, kwargs):
    separator = kwargs.get('separator', os.pathsep)
    value = 
    for var in values:
        value += (separator + var)
    return (separator, value.strip(separator))