避免使用Tweepy限制Twitter API

Question

我在Stack Exchange上的一个问题中看到，限制可能是每15分钟的请求数的函数，并且还取决于算法的复杂性，只不过这并不复杂。

所以我使用这段代码：

import tweepy
import sqlite3
import time

db = sqlite3.connect('data/MyDB.db')

# Get a cursor object
cursor = db.cursor()
cursor.execute('''CREATE TABLE IF NOT EXISTS MyTable(id INTEGER PRIMARY KEY, name TEXT, geo TEXT, image TEXT, source TEXT, timestamp TEXT, text TEXT, rt INTEGER)''')
db.commit()

consumer_key = ""
consumer_secret = ""
key = ""
secret = ""

auth = tweepy.OAuthHandler(consumer_key, consumer_secret)
auth.set_access_token(key, secret)

api = tweepy.API(auth)

search = "#MyHashtag"

for tweet in tweepy.Cursor(api.search,
                           q=search,
                           include_entities=True).items():
    while True:
        try:
            cursor.execute('''INSERT INTO MyTable(name, geo, image, source, timestamp, text, rt) VALUES(?,?,?,?,?,?,?)''',(tweet.user.screen_name, str(tweet.geo), tweet.user.profile_image_url, tweet.source, tweet.created_at, tweet.text, tweet.retweet_count))
        except tweepy.TweepError:
                time.sleep(60 * 15)
                continue
        break
db.commit()
db.close()

我总是收到Twitter限制错误：

Traceback (most recent call last):
  File "stream.py", line 25, in <module>
    include_entities=True).items():
  File "/usr/local/lib/python2.7/dist-packages/tweepy/cursor.py", line 153, in next
    self.current_page = self.page_iterator.next()
  File "/usr/local/lib/python2.7/dist-packages/tweepy/cursor.py", line 98, in next
    data = self.method(max_id = max_id, *self.args, **self.kargs)
  File "/usr/local/lib/python2.7/dist-packages/tweepy/binder.py", line 200, in _call
    return method.execute()
  File "/usr/local/lib/python2.7/dist-packages/tweepy/binder.py", line 176, in execute
    raise TweepError(error_msg, resp)
tweepy.error.TweepError: [{'message': 'Rate limit exceeded', 'code': 88}]

Answer 1

问题在于您的try:except:区块放置在错误的位置。将数据插入数据库将永远不会产生TweepError-对其进行迭代Cursor.items()。我建议重构您的代码以在无限循环中调用next方法Cursor.items()。该调用应放置在try: except:块中，因为它可能引发错误。

代码大致如下所示：

# above omitted for brevity
c = tweepy.Cursor(api.search,
                       q=search,
                       include_entities=True).items()
while True:
    try:
        tweet = c.next()
        # Insert into db
    except tweepy.TweepError:
        time.sleep(60 * 15)
        continue
    except StopIteration:
        break

之所以起作用，是因为当Tweepy引发时TweepError，它没有更新任何游标数据。下次发出请求时，它将使用与触发速率限制的请求相同的参数，有效地重复执行直到达到限制为止。