"TypeError: String Les index doivent être des entiers" lors de l'utilisation de Twython

Question

J'essaie d'obtenir des tweets par des hashtags. Il semble les charger, mais au point d'enregistrer l'identifiant tweet, je reçois:

"TypeError: String indices must be integers". 

Je pense que le problème est quelque chose comme this.

Mon code:

from twython import Twython, TwythonError 
import time 
import math 
import json 

def twitter_oauth_login(): 
    API_KEY = "" 
    API_SECRET = "" 
    ACCESS_TOKEN = "" 
    ACCESS_TOKEN_SECRET = "" 
    twitter = Twython(API_KEY,API_SECRET,ACCESS_TOKEN,ACCESS_TOKEN_SECRET) 
    return(twitter) 

twitter=twitter_oauth_login() 

def get_minimum_id(list_of_tweets): 
    ids = [] 
    idsproxy=[] 
    for tweet in list_of_tweets: 
     this_id = tweet['id'] #The problem appears here 
     this_id = int(this_id) 
     print this_id 
     ids.append(this_id) 
    if ids == idsproxy: 
     minimum = 0 
     return minimum 
    else: 
     minimum = min(ids) 
     return minimum 

def get_complete_timeline(hashtag): 
    twitter = twitter_oauth_login() 
    all_tweets = [] 
    max_id = None 
    while True: 
     new_tweets = twitter.search(q='#'+hashtag, count=200, max_id=max_id) 
     print u"Identified" + str(len(new_tweets)) + u" new tweet for user " + hashtag 
     all_tweets.extend(new_tweets) 

     print "Wait 10 seconds" 
     time.sleep(10) 
     min_id = get_minimum_id(new_tweets) 
     max_id = min_id - 1 
     if len(new_tweets) < 100: 
      break 
      print "Task complete: in total " + len(all_tweets) + " tweets were loaded." 
    return all_tweets 

Le retraçage:

TypeError Traceback (most recent call last) 
<ipython-input-52-708b711e136b> in <module>() 
----> 1 get_complete_timeline("omg") 

<ipython-input-51-34204cb2269e> in get_complete_timeline(hashtag) 
    42   print "Wait 10 seconds" 
    43   time.sleep(10) 
---> 44   min_id = get_minimum_id(new_tweets) 
    45   max_id = min_id - 1 
    46   if len(new_tweets) < 100: 

<ipython-input-51-34204cb2269e> in get_minimum_id(list_of_tweets) 
    19   for tweet in list_of_tweets: 
    20     print '1' 
---> 21     this_id = tweet['id'] 
    22     print '2' 
    23     this_id = int(this_id) 

TypeError: string indices must be integers 

Answer 1

La list_of_tweets variable (ou new_tweets) retournée par twitter.search est un type dictionary.

Vous n'êtes pas itérez correctement sur le dictionnaire, comme dans cet exemple:

d = {'a':1, 'b': 2} 
for value in d: 
    print value 

# This would iterate over the dictionary keys 
>> 'a' 
>> 'b' 

itération correcte sur le dictionnaire utilise la méthode iteritems:

d = {'a':1, 'b': 2} 
for key, value in d.iteritems(): 
    print key, value 

>> 'a', 1 
>> 'b', 2 

itérer sur les statuts retournés:

for tweet in list_of_tweets['statuses']: 
    print tweet['id']