import tweepy
import csv

# assuming twitter_authentication.py contains each of the 4 oauth elements (1 per line)
from twitter_authentication import API_KEY, API_SECRET, ACCESS_TOKEN, ACCESS_TOKEN_SECRET

auth = tweepy.OAuthHandler(API_KEY, API_SECRET)
auth.set_access_token(ACCESS_TOKEN, ACCESS_TOKEN_SECRET)
api = tweepy.API(auth,wait_on_rate_limit=True)

csvFile = open('antivacc.csv', 'a')
#Use csv Writer
csvWriter = csv.writer(csvFile)

for tweet in tweepy.Cursor(api.search,q="#antivaccine",count=100,
                           lang="en",
                           since="2019-04-01",
                           until="2019-06-01").items():
    print (tweet.created_at, tweet.text)
    csvWriter.writerow([tweet.created_at, tweet.text.encode('utf-8')])