employers_median = clients_data.loc[(clients_data['income_type'] == 'сотрудник') &
                                    (clients_data['total_income'].notnull()), 'total_income'].median()
clients_data[clients_data['income_type'] == 'сотрудник'] = clients_data[clients_data['income_type'] == 'сотрудник'].fillna(employers_median)

companion_median = clients_data.loc[(clients_data['income_type'] == 'компаньон') &
                                    (clients_data['total_income'].notnull()), 'total_income'].median()
clients_data[clients_data['income_type'] == 'компаньон'] = clients_data[clients_data['income_type'] == 'компаньон'].fillna(companion_median)

pensioner_median = clients_data.loc[(clients_data['income_type'] == 'пенсионер') &
                                    (clients_data['total_income'].notnull()), 'total_income'].median()
clients_data[clients_data['income_type'] == 'пенсионер'] = clients_data[clients_data['income_type'] == 'пенсионер'].fillna(pensioner_median)

governor_median = clients_data.loc[(clients_data['income_type'] == 'госслужащий') &
                                   (clients_data['total_income'].notnull()), 'total_income'].median()
clients_data[clients_data['income_type'] == 'госслужащий'] = clients_data[clients_data['income_type'] == 'госслужащий'].fillna(governor_median)

entrepreneur_median = clients_data.loc[(clients_data['income_type'] == 'предприниматель') &
                                       (clients_data['total_income'].notnull()), 'total_income'].median()
clients_data[clients_data['income_type'] == 'предприниматель'] = clients_data[clients_data['income_type'] == 'предприниматель'].fillna(entrepreneur_median)