Geopy與錯誤處理

Question

我有錯誤處理一些Python代碼的地方，但由於某些原因的代碼似乎仍然無法處理此特定錯誤：

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. 

這是源：

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) 

我沒有包含足夠的錯誤處理嗎？我的印象是「除了ValueError」會處理這種情況，但我一定是錯的。

在此先感謝您的幫助！

P.S.眼下

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

在try /除了只捕ValueError S：我把這個出代碼，但我不知道它真正的意思呢。爲了趕上GQueryError以及與更換except ValueError:行：

except (ValueError, GQueryError): 

或者，如果GQueryError是不是在你的命名空間，你可能需要像這樣：

except (ValueError, geocoders.google.GQueryError): 

或者趕上ValueError異常和所有的在check_status_code列出錯誤：

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

（同樣，添加geocoders.google.或任何錯誤位置是的前LL的geopy錯誤，如果他們不是在你的命名空間）

或者，如果你只是想捕獲所有可能的異常，你可以簡單地做：

except: 

但這是普遍不好的做法，因爲它還會捕獲您不想捕獲的place, (lat, lng) = g.geocode(a)行中的語法錯誤，因此最好檢查一下geopy代碼以查找它可能拋出的所有可能的異常，以便捕獲它們。希望所有這些都列在你找到的那部分代碼中。