Question

我使用了带有categoryId的Foursquare Explore API查询特定半径内每个类别的场所数。响应包含指定坐标，半径和类别的totalResults值。

def get_venues_count(latitudes, longitudes, radius, categoryId):
    explore_url = 'https://api.foursquare.com/v2/venues/explore?client_id={}&client_secret={}&v={}&ll={},{}&radius={}&categoryId={}'.format(
                CLIENT_ID, 
                CLIENT_SECRET, 
                VERSION,
                lat,
                lng,
                radius,
                categoryId)

    #make the GET request
    return requests.get(explore_url).json()['response']['totalResults']

#Create new dataframe to store venues data
stations_venues_df = df.copy()
for c in categories_list:
    stations_venues_df[c[0]] = 0

#Request number of venues, store result as CSV
for i, row in stations_venues_df.iterrows():
    print(i)
    for c in categories_list:        
        stations_venues_df.loc[i, c[0]] = get_venues_count(stations_venues_df.Latitude.iloc[i],
                                                           stations_venues_df.Longitude.iloc[i],
                                                           radius=500,
                                                           categoryId=c[1])
    stations_venues_df.to_csv('stations_venues.csv')

我运行了很多次，但是每次它只生成几行然后停下来并显示此错误：

KeyError                                  Traceback (most recent call last)
<ipython-input-22-551e888d2436> in <module>
      6                                                            stations_venues_df.Longitude.iloc[i],
      7                                                            radius=500,
----> 8                                                            categoryId=c[1])
      9     stations_venues_df.to_csv('stations_venues.csv')

<ipython-input-20-c9e33ae6e146> in get_venues_count(latitudes, longitudes, radius, categoryId)
     10 
     11     # make the GET request
---> 12     return requests.get(explore_url).json()['response']['totalResults']

KeyError: 'totalResults'

Answer 1

我很可能会猜测返回的响应无效（或者您期望使用其他json格式）。

我建议添加一个检查“ totalResults”是否在json（）[“ reponse”]字典中。如果没有，那么您将知道为什么以及返回哪种响应。

Python |制作GET请求JSON文件时出现KeyError'totalResults'

1 个答案: