kelemeno kelemeno - 4 months ago 12
Python Question

Python3: urllib, expressing what piece of JSON Data I desire

Here is a big piece of JSON data that I fetch in my code below:

{
"status": 200,
"offset": 0,
"limit": 10,
"count": 8,
"total": 8,
"url": "/v2/dictionaries/ldoce5/entries?headword=extra",
"results": [
{
"datasets": [
"ldoce5",
"dictionary"
],
"headword": "extra",
"homnum": 3,
"id": "cqAFDjvvYg",
"part_of_speech": "adverb",
"senses": [
{
"collocation_examples": [
{
"collocation": "one/a few etc extra",
"example": {
"audio": [
{
"type": "example",
"url": "/v2/dictionaries/assets/ldoce/exa_pron/p008-001627480.mp3"
}
],
"text": "I got a few extra in case anyone else decides to come."
}
}
],
"definition": [
"in addition to the usual things or the usual amount"
],
"examples": [
{
"audio": [
{
"type": "example",
"url": "/v2/dictionaries/assets/ldoce/exa_pron/p008-001627477.mp3"
}
],
"text": "They need to offer something extra to attract customers."
}
]
}
],
"url": "/v2/dictionaries/entries/cqAFDjvvYg"
},
{
"datasets": [
"ldoce5",
"dictionary"
],
"headword": "extra-",
"id": "cqAFDk1BDw",
"part_of_speech": "prefix",
"pronunciations": [
{
"audio": [
{
"lang": "American English",
"type": "pronunciation",
"url": "/v2/dictionaries/assets/ldoce/us_pron/extra__pre.mp3"
}
],
"ipa": "ekstrə"
}
],
"senses": [
{
"definition": [
"outside or beyond"
],
"examples": [
{
"audio": [
{
"type": "example",
"url": "/v2/dictionaries/assets/ldoce/exa_pron/p008-001832333.mp3"
}
],
"text": "extragalactic (=outside our galaxy)"
}
]
}
],
"url": "/v2/dictionaries/entries/cqAFDk1BDw"
},
{
"datasets": [
"ldoce5",
"dictionary"
],
"headword": "extra",
"homnum": 1,
"id": "cqAFDjpNZQ",
"part_of_speech": "adjective",
"pronunciations": [
{
"audio": [
{
"lang": "British English",
"type": "pronunciation",
"url": "/v2/dictionaries/assets/ldoce/gb_pron/extra_n0205.mp3"
},
{
"lang": "American English",
"type": "pronunciation",
"url": "/v2/dictionaries/assets/ldoce/us_pron/extra1.mp3"
}
],
"ipa": "ˈekstrə"
}
],
"senses": [
{
"collocation_examples": [
{
"collocation": "an extra ten minutes/three metres etc",
"example": {
"audio": [
{
"type": "example",
"url": "/v2/dictionaries/assets/ldoce/exa_pron/p008-001202489.mp3"
}
],
"text": "I asked for an extra two weeks to finish the work."
}
}
],
"definition": [
"more of something, in addition to the usual or standard amount or number"
],
"examples": [
{
"audio": [
{
"type": "example",
"url": "/v2/dictionaries/assets/ldoce/exa_pron/p008-001202484.mp3"
}
],
"text": "Could you get an extra loaf of bread?"
}
],
"gramatical_info": {
"type": "only before noun"
}
}
],
"url": "/v2/dictionaries/entries/cqAFDjpNZQ"
},
{
"datasets": [
"ldoce5",
"dictionary"
],
"headword": "extra",
"homnum": 2,
"id": "cqAFDjsQjH",
"part_of_speech": "pronoun",
"senses": [
{
"collocation_examples": [
{
"collocation": "pay/charge/cost etc extra",
"example": {
"audio": [
{
"type": "example",
"url": "/v2/dictionaries/assets/ldoce/exa_pron/p008-001202499.mp3"
}
],
"text": "I earn extra for working on Sunday."
}
}
],
"definition": [
"an amount of something, especially money, in addition to the usual, basic, or necessary amount"
],
"synonym": "more"
}
],
"url": "/v2/dictionaries/entries/cqAFDjsQjH"
},
{
"datasets": [
"ldoce5",
"dictionary"
],
"headword": "extra",
"homnum": 4,
"id": "cqAFDjyTn8",
"part_of_speech": "noun",
"senses": [
{
"definition": [
"something which is added to a basic product or service that improves it and often costs more"
],
"examples": [
{
"audio": [
{
"type": "example",
"url": "/v2/dictionaries/assets/ldoce/exa_pron/p008-001202524.mp3"
}
],
"text": "Tinted windows and a sunroof are optional extras(=something that you can choose to have or not)."
}
]
}
],
"url": "/v2/dictionaries/entries/cqAFDjyTn8"
},
{
"datasets": [
"ldoce5",
"dictionary"
],
"headword": "extra virgin",
"id": "cqAFDmV2Jw",
"part_of_speech": "adjective",
"senses": [
{
"definition": [
"extra virgin olive oil comes from olives that are pressed for the first time, and is considered to be the best quality olive oil"
]
}
],
"url": "/v2/dictionaries/entries/cqAFDmV2Jw"
},
{
"datasets": [
"ldoce5",
"dictionary"
],
"headword": "extra time",
"id": "cqAFDmGZyQ",
"part_of_speech": "noun",
"senses": [
{
"american_equivalent": "overtime",
"definition": [
"a period, usually of 30 minutes, added to the end of a football game in some competitions if neither team has won after normal time"
],
"examples": [
{
"audio": [
{
"type": "example",
"url": "/v2/dictionaries/assets/ldoce/exa_pron/p008-001627835.mp3"
}
],
"text": "The match went into extra time."
}
],
"geography": "especially British English",
"gramatical_examples": [
{
"examples": [
{
"audio": [
{
"type": "example",
"url": "/v2/dictionaries/assets/ldoce/exa_pron/p008-001627834.mp3"
}
],
"text": "Beckham scored in extra time."
}
],
"pattern": "in extra time"
}
]
}
],
"url": "/v2/dictionaries/entries/cqAFDmGZyQ"
},
{
"datasets": [
"ldoce5",
"dictionary"
],
"headword": "extra-sensory perception",
"id": "cqAFDm6ceW",
"part_of_speech": "noun",
"senses": [
{
"definition": [
"ESP"
]
}
],
"url": "/v2/dictionaries/entries/cqAFDm6ceW"
}
]
}


I want to grab and print the definitions offered in the JSON results. I don't know how to express this and am getting a 'list indices must be integers or slices, not str' error for my sense = data['senses'].

#!/usr/bin/env python

import urllib.request
import json

wp = urllib.request.urlopen("http://api.pearson.com/v2/dictionaries/ldoce5/entries?headword=extra").read().decode('utf8')
jsonData=json.loads(wp)
data=jsonData['results']

for item in data:
sense = data['senses']
print(senses['definition'])

Answer

sense is actually a list with a single element, a dictionary. The contained dictionary has your desired key-value pair.

For example:

for item in data:
    sense = data['senses'][0]
    print(sense['definition'])