带有错误处理的 Geopy

Question

我有一些带有错误处理的 Python 代码，但由于某种原因，代码似乎仍然无法处理这个特定错误：

raise GQueryError("No corresponding geographic location could be found for the     specified location, possibly because the address is relatively new, or because it may be incorrect.")
geopy.geocoders.google.GQueryError: No corresponding geographic location could be found for the specified location, possibly because the address is relatively new, or because it may be incorrect.

这是来源：

import csv
from geopy import geocoders
import time

g = geocoders.Google()

spamReader = csv.reader(open('locations.csv', 'rb'), delimiter='\t', quotechar='|')

f = open("output.txt",'w')

for row in spamReader:
    a = ', '.join(row)
    #exactly_one = False
    time.sleep(1)

    try:
        place, (lat, lng) = g.geocode(a)
    except ValueError:
        #print("Error: geocode failed on input %s with message %s"%(a, error_message))
        continue 

    b = str(place) + "," + str(lat) + "," + str(lng) + "\n"
    print b
    f.write(b)

我没有包含足够的错误处理吗？我的印象是“除了 ValueError”会处理这种情况，但我一定是错的。

提前感谢您的帮助！

附：我将其从代码中提取出来，但我还不知道它的真正含义：

   def check_status_code(self,status_code):
    if status_code == 400:
        raise GeocoderResultError("Bad request (Server returned status 400)")
    elif status_code == 500:
        raise GeocoderResultError("Unkown error (Server returned status 500)")
    elif status_code == 601:
        raise GQueryError("An empty lookup was performed")
    elif status_code == 602:
        raise GQueryError("No corresponding geographic location could be found for the specified location, possibly because the address is relatively new, or because it may be incorrect.")
    elif status_code == 603:
        raise GQueryError("The geocode for the given location could be returned due to legal or contractual reasons")
    elif status_code == 610:
        raise GBadKeyError("The api_key is either invalid or does not match the domain for which it was given.")
    elif status_code == 620:
        raise GTooManyQueriesError("The given key has gone over the requests limit in the 24 hour period or has submitted too many requests in too short a period of time.")

Answer 1

现在 try/except 只捕获ValueErrors。要同时捕获 GQueryError，请将 except ValueError: 行替换为：

except (ValueError, GQueryError):

或者如果 GQueryError 不在你的命名空间中，你可能需要这样的东西：

except (ValueError, geocoders.google.GQueryError):

或者捕获ValueError和check_status_code中列出的所有错误：

except (ValueError, GQueryError, GeocoderResultError, 
        GBadKeyError, GTooManyQueriesError):

（同样，如果它们不在您的命名空间中，请将 geocoders.google. 或任何错误位置添加到所有地理错误的前面。）

或者，如果您只想捕获所有可能的异常，您可以这样做：

except:

但这通常是不好的做法，因为它还会捕获您不希望捕获的 place, (lat, lng) = g.geocode(a) 行中的语法错误之类的东西，因此最好检查 geopy 代码以找到所有可能的异常它可能是你想抓住的东西。希望所有这些都列在您找到的那段代码中。