def save_tweet_to_csv(ticker, tweet, emotion, confidence):
    file = Path(url_path + ticker + '_tweets.csv')
    if file.is_file():
        mode = 'a'
    else:
        mode = 'w'
    with open(url_path + ticker + '_tweets.csv', mode, newline="n", encoding="utf-8") as csvfile:
        fieldnames = ['tweet', 'emotion', 'confidence']
        writer = csv.DictWriter(csvfile, fieldnames=fieldnames)
        if mode == 'w':
            writer.writeheader()
        writer.writerow({'tweet': tweet, 'emotion': emotion, 'confidence': confidence})

def plot_tweets_csv(ticker):
    file = Path(url_path + ticker + '_tweets.csv')
    emotions = []
    with open(file, 'r', encoding="utf8") as csvfile:
        reader = csv.DictReader(file)
        for row in reader :
            print(row['emotion'])

with open(file, 'r', encoding="utf8") as csvfile:
    reader = csv.DictReader(csvfile)
    ...