August 2017
Intermediate to advanced
500 pages
12h 3m
Japanese
Content preview from PythonとJavaScriptではじめるデータビジュアライゼーション
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5.5 データのスクレイピング
import json
# ...
class MyStreamListener(StreamListener):
"""
ツイートをストリーミングして
MongoDB
データベースに保存する
"""
def _ _init_ _(self, api, **kw):
self.api = api
super(tweepy.StreamListener, self)._ _init_ _()
†
self.col = get_mongo_database('tweets', **kw)['tweets'] #
❶
def on_data(self, tweet):
self.col.insert(json.loads(tweet)) #
❷
def on_error(self, status):
return True #
ストリームを開いたままにする
auth = tweepy.OAuthHandler(consumer_key, consumer_secret)
auth.set_access_token(access_token, access_token_secret)
api = tweepy.API(auth)
stream = tweepy.Stream(auth, MyStreamListener(api))
#
キーワードのトラックリストでストリームを開始する
stream.filter(track=['python', 'javascript', ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.