gmplot: Calling `from_geocode` occasionally produces "list index out of range" error

I’ve been using gmplot to draw running routes (via tcx files). Until recently I could loop through a file list and generate the new html plots.

But now the loop will seemingly-spontaneously fail and generate the following error:

 40             'http://maps.googleapis.com/maps/api/geocode/json?address="%s"' % location_string)
 41         geocode = json.loads(geocode.text)
—> 42 latlng_dict = geocode[‘results’][0][‘geometry’][‘location’] 43 return latlng_dict[‘lat’], latlng_dict[‘lng’] 44

IndexError: list index out of range

I was able to isolate it to the call for gmap = gmplot.GoogleMapPlotter.from_geocode("San Francisco")

For example, running the following code will result in throwing an error at some point (usually in the 8-14 range):

for i in range(25):
    print(i)
    gmap = gmplot.GoogleMapPlotter.from_geocode("San Francisco")

I can wrap it in a try/except but that merely delays the break.

My naive guess is that I’m breaking some API limit.

About this issue

Original URL
State: closed
Created 7 years ago
Comments: 16 (3 by maintainers)

Most upvoted comments

fixed with:

@@ -34,14 +35,14 @@ class GoogleMapPlotter(object):
         self._infowindows = []
 
     @classmethod
-    def from_geocode(cls, location_string, zoom=13):
-        lat, lng = cls.geocode(location_string)
-        return cls(lat, lng, zoom)
+    def from_geocode(cls, location_string, apikey, zoom=13):
+        lat, lng = cls.geocode(location_string, apikey)
+        return cls(lat, lng, zoom, apikey)
 
     @classmethod
-    def geocode(self, location_string):
+    def geocode(self, location_string, apikey):
         geocode = requests.get(
-            'http://maps.googleapis.com/maps/api/geocode/json?address="%s"' % location_string)
+            'https://maps.googleapis.com/maps/api/geocode/json?address="%s"&key=%s' % (location_string, apikey))
         geocode = json.loads(geocode.text)
         latlng_dict = geocode['results'][0]['geometry']['location']
         return latlng_dict['lat'], latlng_dict['lng']

ie you’re forced to pass and API key (as gmaps forces you to)

sandrotosi on Oct 18, 2018

Fixed in #111.

frslm on Apr 21, 2020

Any chance this can get merged into the official release? Or do I need to fork yet another project to fix bugs that have had a solution sitting around in some other fork for a while?

hlongmore on Jun 16, 2019

the issue is pretty obvious looking at the code:

    @classmethod
    def geocode(self, location_string):
        geocode = requests.get(
            'http://maps.googleapis.com/maps/api/geocode/json?address="%s"' % location_string)
        geocode = json.loads(geocode.text)
        latlng_dict = geocode['results'][0]['geometry']['location']
        return latlng_dict['lat'], latlng_dict['lng']

first you need to call that URL using https, second you need to pass the GMaps API key to it (or gmaps will reply back with an error saying “Keyless access to Google Maps Platform is deprecated. Please use an API key with all your API calls to avoid service interruption. For further details please refer to http://g.co/dev/maps-no-account”)

sandrotosi on Oct 18, 2018