def _check_wb_country(country: str):
    'Check that world bank country is in supported set.'
    if ((country not in wb_country_dict.keys()) & (country not in wb_country_dict.values())):
        raise ValueError(f'country {country} not in supported World Bank country dict, {wb_country_dict}')
Check that world bank country is in supported set.
def _check_wb_country(country: str):
    
    if ((country not in wb_country_dict.keys()) & (country not in wb_country_dict.values())):
        raise ValueError(f'country {country} not in supported World Bank country dict, {wb_country_dict}')