@dataclass
class Antenna:
    name: str
     x: float
     y: float

# records is the csv file  and antenna_list is the list from type Antenna
for index in range(len(records)):
    rec = records.iloc[index]['sector']
    for i in range(len(antenna_list)):
        if rec == antenna_list[i].name:
             lat = antenna_list[i].x
             lon = antenna_list[i].y
             records.at[index, 'x'] = lat
             records.at[index, 'y'] = lon
             break