Does IOError: [Errno 2] No such file or directory: mean the file hasn't been written? - json

Question

I'm using Tweepy for the first time. Currently getting this error
---------------------------------------------------------------------------
IOError Traceback (most recent call last)
<ipython-input-11-cdd7ebe0c00f> in <module>()
----> 1 data_json = io.open('raw_tweets.json', mode='r', encoding='utf-8').read() #reads in the JSON file
2 data_python = json.loads(data_json)
3
4 csv_out = io.open('tweets_out_utf8.csv', mode='w', encoding='utf-8') #opens csv file
IOError: [Errno 2] No such file or directory: 'raw_tweets.json'
I've got a feeling that the code I've got isn't working. For example print(status) doesn't print anything. Also I see no saved CSV or JSON file in the directory.
I'm a newbie so any help/documentation you can offer would be great!
import time
from tweepy import Stream
from tweepy import OAuthHandler
from tweepy.streaming import StreamListener
import os
import json
import csv
import io
from pymongo import MongoClient
ckey = 'blah'
consumer_secret = 'blah'
access_token_key = 'blah'
access_token_secret = 'blah'
#start_time = time.time() #grabs the system time
keyword_list = ['keyword'] #track list
#Listener Class Override
class listener(StreamListener):
def __init__(self, start_time, time_limit=60):
self.time = start_time
self.limit = time_limit
self.tweet_data = []
def on_data(self, data):
saveFile = io.open('raw_tweets.json', 'a', encoding='utf-8')
while (time.time() - self.time) < self.limit:
try:
self.tweet_data.append(data)
return True
except BaseException, e:
print 'failed ondata,', str(e)
time.sleep(5)
pass
saveFile = io.open('raw_tweets.json', 'w', encoding='utf-8')
saveFile.write(u'[\n')
saveFile.write(','.join(self.tweet_data))
saveFile.write(u'\n]')
saveFile.close()
exit()
def on_error(self, status):
print status
class listener(StreamListener):
def __init__(self, start_time, time_limit=10):
self.time = start_time
self.limit = time_limit
def on_data(self, data):
while (time.time() - self.time) < self.limit:
print(data)
try:
client = MongoClient('blah', 27017)
db = client['blah']
collection = db['blah']
tweet = json.loads(data)
collection.insert(tweet)
return True
except BaseException as e:
print('failed ondata,')
print(str(e))
time.sleep(5)
pass
exit()
def on_error(self, status):
print(status)
data_json = io.open('raw_tweets.json', mode='r', encoding='utf-8').read() #reads in the JSON file
data_python = json.loads(data_json)
csv_out = io.open('tweets_out_utf8.csv', mode='w', encoding='utf-8') #opens csv file
UPDATED: Creates file but file is empty
import tweepy
import datetime
auth = tweepy.OAuthHandler('xxx', 'xxx')
auth.set_access_token('xxx', 'xxx')
class listener(tweepy.StreamListener):
def __init__(self, timeout, file_name, *args, **kwargs):
super(listener, self).__init__(*args, **kwargs)
self.start_time = None
self.timeout = timeout
self.file_name = file_name
self.tweet_data = []
def on_data(self, data):
if self.start_time is None:
self.start_time = datetime.datetime.now()
while (datetime.datetime.now() - self.start_time).seconds < self.timeout:
with open(self.file_name, 'a') as data_file:
data_file.write('\n')
data_file.write(data)
def on_error(self, status):
print status
l = listener(60, 'stack_raw_tweets.json')
mstream = tweepy.Stream(auth=auth, listener=l)
mstream.filter(track=['python'], async=True)

Answer 1

You are not creating a Stream for the listener. The last but one line of the code below does that. Followed by that you have to start the Stream, which is the last line. I must warn you that storing this in mongodb is the right thing to do as the file that I am storing it seems to grow easily to several GB. Also the file is not exactly a json. Each line in the file is a json. You must tweak it to your needs.
import tweepy
import datetime
auth = tweepy.OAuthHandler(consumer_key, consumer_secret)
auth.set_access_token(access_token, access_secret)
class listener(tweepy.StreamListener):
def __init__(self, timeout, file_name, *args, **kwargs):
super(listener, self).__init__(*args, **kwargs)
self.start_time = None
self.timeout = timeout
self.file_name = file_name
self.tweet_data = []
def on_data(self, data):
if self.start_time is None:
self.start_time = datetime.datetime.now()
while (datetime.datetime.now() - self.start_time).seconds < self.timeout:
with open(self.file_name, 'a') as data_file:
data_file.write('\n')
data_file.write(data)
def on_error(self, status):
print status
l = listener(60, 'raw_tweets.json')
mstream = tweepy.Stream(auth=auth, listener=l)
mstream.filter(track=['python'], async=True)