title: inconsistent use of tabs and spaces in indentation notepad++ Python
body: <p>I am getting an inconsistent use of tabs and spaces in indentation error after adding only one line of code and I can't see why it would throw the error, here is the code:</p>
  
  <pre><code>auth = tweepy.OAuthHandler(consumer_key, consumer_secret) #create authentcation handler
  
  auth.set_access_token(access_token, access_secret) #set access tokens to connect to twitter dev account
  
  api = tweepy.API(auth, wait_on_rate_limit=True, wait_on_rate_limit_notify=True) #consume tweepy api function, 
  
  tweets = api.user_timeline('realDonaldTrump', count=30) 
  
  tweets_list = []
  for each_tweet in tweets:
      tweets_list.append(each_tweet._json)
  with open('tweets.csv', 'a') as file:
          file.write(json.dumps(tweets_list, indent=4))
  
  my_demo_list = []
  with open('tweets.csv', encoding='utf-8') as csvFile:  
      all_data = json.load(csvFile)
      for json_tweet_data in all_data:
          tweet_id = json_tweet_data['id']
          text = json_tweet_data['text']
          favorite_count = json_tweet_data['favorite_count']
          retweet_count = json_tweet_data['retweet_count']
          created_at = json_tweet_data['created_at']
          #lang= json_tweet_data['lang']
          my_demo_list.append({'tweet_id': str(tweet_id),
                               'text': str(text),
                               'favorite_count': int(favorite_count),
                               'retweet_count': int(retweet_count),
                               'created_at': created_at,
                               'lang':str(lang)
                              })
          print(my_demo_list)
          tweet_json = pd.DataFrame(my_demo_list, columns = 
                                    ['tweet_id', 'text', 
                                     'favorite_count', 'retweet_count', 
                                     'created_at','language'])        
  print(tweet_json)
  </code></pre>
  
  <p>the #lang = json_tweet_data['lang'] line is where the error is appearing and if I remove it or comment it out like it is in the code shown, it will work fine, from what I can see everything is indented fine, what could be the issue here?</p>