AttributeError：“NoneType”对象没有属性“经度”

Question

我正在尝试获取数据框的“城市”列的坐标。该城市列的 dtype 为 ('O')。它是一个城市名称列表。我已确保城市名称中没有数字或数字。这是我运行来获取坐标的函数：

def get_coordinates(city_list):
    """Takes a list of cities and returns a dictionary of the cities and their corresponding coordinates."""
    geolocator = Nominatim(user_agent='location script')
    dicto = {}


    for city in city_list:
        


        try:
            location = geolocator.geocode(city)
        except:
            raise Exception("There was a problem with the getCoordinates function")
        coordinate_values = (location.longitude, location.latitude)  #in geopandas, the x value corresponds to the longitude while the y value, the latitude(Just in case you were wondering why it was *location.longitude, location.latitude* and not the other way round )
        dicto[city] = coordinate_values #adding the coordinate pair to the dictionary at the end of every loop
    return dicto #finally retruns the dict 

然后：

#getting coordinates for each city in the list
city_coords_dict = get_coordinates(city_list)
city_coords_dict

最终输出：

---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
<ipython-input-63-dedf916e4307> in <module>
      1 #getting coordinates for each city in the list
----> 2 city_coords_dict = get_coordinates(city_list)
      3 city_coords_dict

<ipython-input-62-c391f86b76db> in get_coordinates(city_list)
     13         except:
     14             raise Exception("There was a problem with the getCoordinates function")
---> 15         coordinate_values = (location.longitude, location.latitude)  #in geopandas, the x value corresponds to the longitude while the y value, the latitude(Just in case you were wondering why it was *location.longitude, location.latitude* and not the other way round )
     16         dicto[city] = coordinate_values #adding the coordinate pair to the dictionary at the end of every loop
     17     return dicto #finally retruns the dict

AttributeError: 'NoneType' object has no attribute 'longitude'

任何有建议的人将不胜感激。提前致谢。

Answer 1

您的地理定位器显然没有它试图请求的特定城市的数据。作为not_speshal also said，geolocator.geocode(city) 在某个时刻返回None，它被分配给location。所以稍后，您尝试获取location.longitude，因为location 现在是None，所以相当于(None).longitude...

Answer 2

geocode 不会抛出异常，而是返回一个 NoneType 对象。因此，Nominatim 无法找到“位置脚本”中列出的位置之一。

尝试用assert location, city替换try catch块