CODE EXAMPLE FOR PYTHON

Filling a missing value in a pandas data frame with an if statement based on a condition

def CA_LATITUDE(county_CODE):
    if county_CODE == 4710:
       return 41.5188
    else:
       return np.nan

CA_LOCATION['LATITUDE'] = CA_LOCATION['LATITUDE'].fillna(CA_LOCATION.CNTY_CITY_LOC.apply(CA_LATITUDE))