CODEWITHSUNDEEP
pythonjsonflask
PYA
PYA

Reputation: 8636

Flask python json parsing

Hello I am completely new to flask and python. I am using an API to geocode and i get a json which is 

"info": {
    "copyright": {
      "imageAltText": "\u00a9 2015 MapQuest, Inc.", 
      "imageUrl": "http://api.mqcdn.com/res/mqlogo.gif", 
      "text": "\u00a9 2015 MapQuest, Inc."
    }, 
    "messages": [], 
    "statuscode": 0
  }, 
  "options": {
    "ignoreLatLngInput": false, 
    "maxResults": -1, 
    "thumbMaps": true
  }, 
  "results": [
    {
      "locations": [
        {
          "adminArea1": "US", 
          "adminArea1Type": "Country", 
          "adminArea3": "", 
          "adminArea3Type": "", 
          "adminArea4": "", 
          "adminArea4Type": "County", 
          "adminArea5": "", 
          "adminArea5Type": "City", 
          "adminArea6": "", 
          "adminArea6Type": "Neighborhood", 
          "displayLatLng": {
            "lat": 33.663512, 
            "lng": -111.958849
          }, 
          "dragPoint": false, 
          "geocodeQuality": "ADDRESS", 
          "geocodeQualityCode": "L1AAA", 
          "latLng": {
            "lat": 33.663512, 
            "lng": -111.958849
          }, 
          "linkId": "25438895i35930428r65831359", 
          "mapUrl": "http://www.mapquestapi.com/staticmap/v4/getmap?key=&rand=1009123942", 
          "postalCode": "", 
          "sideOfStreet": "R", 
          "street": "", 
          "type": "s", 
          "unknownInput": ""
        }
      ], 
      "providedLocation": {
        "city": " ", 
        "postalCode": "", 
        "state": "", 
        "street": "E Blvd"
      }
    }
  ]
}

RIght now i am doing this

data=json.loads(r)
return jsonify(data)

and this prints all the data as shown above. I need to get the latlng array from locations which is in results. I have tried data.get("results").get("locations") and hundreds of combinations like that but i still cant get it to work. I basically need to store the lat and long in a session variable. Any help is appreciated

Upvotes: 0

Views: 7683

Answers (3)

Cyphase
Cyphase

Reputation: 12012

Assuming you just have one location as in your example:

from __future__ import print_function

import json

r = ...
data = json.loads(r)

latlng = data['results'][0]['locations'][0]['latLng']
latitude = latlng['lat']
longitude = latlng['lng']

print(latitude, longitude)  # 33.663512 -111.958849

Upvotes: 3

salmanwahed
salmanwahed

Reputation: 9647

data.get("results") will return a list type object. As list object does not have get attribute, you can not do data.get("results").get("locations")

According to the json you provided, you can do like this:

data.get('results')[0].get('locations') # also a list

This will give you the array. Now you can get the lat and lng like this:

data.get('results')[0].get('locations')[0].get('latLng').get('lat') # lat
data.get('results')[0].get('locations')[0].get('latLng').get('lng') # lng

Upvotes: 2

luoluo
luoluo

Reputation: 5533

I summarize my comments as follows:

You can use data as a dict of dict and list.

A quick ref to dict and list:

A dictionary’s keys are almost arbitrary values.

get(key[, default])

Return the value for key if key is in the dictionary, else default. If default is not given, it defaults to None, so that this method never raises a KeyError.

official docs about stdtypes

Upvotes: 0

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