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python - 除了 BaseException as e: 不断抛出错误

问题描述

我正在关注有关分析 Twitter 数据的教程。我想知道为什么我在第 44 行不断收到语法错误：除了 BaseException as e：

from tweepy import API
from tweepy import Cursor
from tweepy.streaming import StreamListener
from tweepy import OAuthHandler
from tweepy import Stream

import twitter_credentials
#TWITTER AUTHENTICATOR
class TwitterAuthenticator():

    def authenticate_twitter_app(self):
        auth = OAuthHandler(twitter_credentials.CONSUMER_KEY, twitter_credentials.CONSUMER_SECRET)
        auth.set_access_token(twitter_credentials.ACCESS_TOKEN, twitter_credentials.ACCESS_TOKEN_SECRET)
        return auth

#TWITTER STREAMER
class TwitterStreamer():

#Class for streaming and processing live tweets
    def __init__(self):
        self.twitter_authenticator = TwitterAuthenticator()


    def stream_tweets(self, fetched_tweets_filename, hash_tag_list):
        #This handles Twitter authentication and connection to the Twitter streaming API
        listener = TwitterListener()
        auth = self.twitter_authenticator.authenticate_twitter_app()
        stream = Stream(auth, listener)

        stream.filter(track=hash_tag_list)

class TwitterListener(StreamListener):
#Basic listener class that just prints received tweets to stdout
    def __init__(self, fetched_tweets_filename):
        self.fetched_tweets_filename = fetched_tweets_filename


    def on_data(self, data):
        try:
            print(data)
            with open(self.fetched_tweets_filename, 'a') as tf:
                tf.write(data)
                return True
            except BaseException as e:
                    print('Error on_data %s' % str(e))
                return True

    def on_error(self, status):
        print(status)


if __name__ == '__main__':

    hash_tag_list['kevin durant', 'steph curry', 'clippers']
    fetched_tweets_filename = 'tweets.json'

    twitter_streamer = TwitterStreamer()
    twitter_streamer.stream_tweets(fetched_tweets_filename, hash_tag_list)

标签： pythonapitweepytwitter-streaming-api

解决方案

你except的缩进太多了。应与try(in on_data()) 处于同一级别，并且 in 中的代码except应缩进相同。

顺便说一句，函数写错了。在某些情况下，它什么也不返回。您至少应该在return False函数体的末尾添加。

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