diff --git a/helpers.py b/helpers.py
index e3cafcc..cb079a5 100755
--- a/helpers.py
+++ b/helpers.py
@@ -11,32 +11,24 @@ def _config(key):
     key {string} -- Name of the key in the config.json file.
     """
 
-    my_file = Path('config.json')
+    my_file = Path("config.json")
     if not my_file.is_file():
-
-        print('--- Main config.json file not found. Exiting.')
-
+        print("--- Main config.json file not found. Exiting.")
         sys.exit()
 
-    config_file = open('config.json')
+    config_file = open("config.json")
     config = config_file.read()
 
     if not config:
-
-        print('--- config.json invalid. Exiting.')
-
+        print("--- config.json invalid. Exiting.")
         sys.exit()
 
     config = json.loads(config)
 
     if config.get(key):
-
         return config.get(key)
-
     else:
-
-        print('--- config.json invalid. Exiting.')
-
+        print("--- config.json invalid. Exiting.")
         sys.exit()
 
 
@@ -46,8 +38,7 @@ def _info(message):
     Arguments:
     message {string} -- Log message.
     """
-
-    print(' _info > ' + message)
+    print(f" _info > {message}")
 
 
 def _error(message):
@@ -56,5 +47,4 @@ def _error(message):
     Arguments:
     message {string} -- Log message.
     """
-
-    print(' _error > ' + message)
+    print(f" _error > {message}")
diff --git a/run.py b/run.py
index 8e646f9..37cec61 100644
--- a/run.py
+++ b/run.py
@@ -4,7 +4,7 @@ import social
 import sys
 
 
-if __name__ == '__main__':
+if __name__ == "__main__":
 
     """ It all starts here...
 
@@ -15,20 +15,13 @@ if __name__ == '__main__':
     tweets = social.getTweets()
 
     if not tweets:
-
-        helpers._error(
-            '__main__ => No tweets fetched.')
-
+        helpers._error("__main__ => No tweets fetched.")
         sys.exit()
 
-    helpers._info('__main__ => ' + str(len(tweets)) + ' tweets fetched.')
+    helpers._info(f"__main__ => {len(tweets)} tweets fetched.")
 
     for tweet in tweets:
-
         if social.tootTheTweet(tweet):
-
-            helpers._info('__main__ => Tooted "' + tweet['text'] + '"')
-            helpers._info(
-                '__main__ => Tooting less is tooting more. Sleeping...')
-
+            helpers._info(f'__main__ => Tooted "{tweet["text"]}"')
+            helpers._info("__main__ => Tooting less is tooting more. Sleeping...")
             sys.exit()
diff --git a/social.py b/social.py
index 96cb833..282209f 100644
--- a/social.py
+++ b/social.py
@@ -4,6 +4,7 @@ from bs4 import BeautifulSoup
 from pathlib import Path
 import base64
 
+
 def getTweets():
     """ Get list of tweets, with tweet ID and content, from configured Twitter account URL.
 
@@ -13,50 +14,38 @@ def getTweets():
     """
 
     all_tweets = []
-
-    url = helpers._config('tweets.source_account_url')
+    url = helpers._config("tweets.source_account_url")
 
     if not url:
-
-        helpers._error('getTweets() => The source Twitter account URL (' + url + ') was incorrect. Could not retrieve tweets.')
-
+        helpers._error(
+            f"getTweets() => The source Twitter account URL ({url}) was incorrect. Could not retrieve tweets.")
         return False
 
     headers = {}
-    headers['accept-language'] = 'en-US,en;q=0.9'
-    headers['dnt'] = '1'
-    headers['user-agent'] = helpers._config('gen.APP_NAME')
+    headers["accept-language"] = "en-US,en;q=0.9"
+    headers["dnt"] = "1"
+    headers["user-agent"] = helpers._config("gen.APP_NAME")
 
     data = requests.get(url)
-
-    html = BeautifulSoup(data.text, 'html.parser')
-
-    timeline = html.select('#timeline li.stream-item')
+    html = BeautifulSoup(data.text, "html.parser")
+    timeline = html.select("#timeline li.stream-item")
 
     if timeline is None:
-
-        helpers._error('getTweets() => Could not retrieve tweets from the page. Please make sure the source Twitter account URL (' + url + ') is correct.')
-
+        helpers._error(
+            f"getTweets() => Could not retrieve tweets from the page. Please make sure the source Twitter account URL ({url}) is correct."
+        )
         return False
 
-    helpers._info('getTweets() => Fetched tweets for ' + url + '.')
+    helpers._info(f"getTweets() => Fetched tweets for {url}.")
 
     for tweet in timeline:
-
-        tweet_id = tweet['data-item-id']
-        
+        tweet_id = tweet["data-item-id"]
         try:
-
-            tweet_text = tweet.select('p.tweet-text')[0].get_text()
-
+            tweet_text = tweet.select("p.tweet-text")[0].get_text()
         except:
-            
-            helpers._info('getTweets() => No tweet text found. Moving on...')
-
+            helpers._info("getTweets() => No tweet text found. Moving on...")
             continue
-        
         all_tweets.append({"id": tweet_id, "text": tweet_text})
-
     return all_tweets if len(all_tweets) > 0 else None
 
 
@@ -71,62 +60,58 @@ def tootTheTweet(tweet):
         tweet {dictionary} -- Dictionary containing the "id" and "text" of a single tweet.
     """
 
-    host_instance = helpers._config('toots.host_instance')
-    token = helpers._config('toots.app_secure_token')
-
-    tweet_id = tweet['id']
+    host_instance = helpers._config("toots.host_instance")
+    token = helpers._config("toots.app_secure_token")
+    tweet_id = tweet["id"]
 
     if not host_instance:
-
-        helpers._error('tootTheTweet() => Your host Mastodon instance URL (' + host_instance + ') was incorrect.')
-
+        helpers._error(
+            f"tootTheTweet() => Your host Mastodon instance URL ({host_instance}) was incorrect."
+        )
         return False
 
     if not token:
-
-        helpers._error('tootTheTweet() => Your Mastodon access token was incorrect.')
-
-        return False  
-
-    headers = {}
-    headers['Authorization'] = 'Bearer ' + token
-    headers['Idempotency-Key'] = tweet_id
-
-    data = {}
-    data['status'] = tweet['text']
-    data['visibility'] = 'public'
-
-    tweet_check_file_path = helpers._config('toots.cache_path') + tweet['id']
-    tweet_check_file = Path(tweet_check_file_path)
-    if tweet_check_file.is_file():
-
-        helpers._info('tootTheTweet() => Tweet ' + tweet_id + ' was already posted. Reposting...')
-
+        helpers._error("tootTheTweet() => Your Mastodon access token was incorrect.")
         return False
 
-    else:
+    headers = {}
+    headers["Authorization"] = f"Bearer {token}"
+    headers["Idempotency-Key"] = tweet_id
 
-        tweet['text'].encode('utf-8')
-        
-        tweet_check = open(tweet_check_file_path, mode='w')
-        tweet_check.write(tweet['text'])
+    data = {}
+    data["status"] = tweet["text"]
+    data["visibility"] = "public"
+
+    tweet_check_file_path = helpers._config("toots.cache_path") + tweet["id"]
+    tweet_check_file = Path(tweet_check_file_path)
+    if tweet_check_file.is_file():
+        helpers._info(
+            f"tootTheTweet() => Tweet {tweet_id} was already posted. Reposting..."
+        )
+        return False
+    else:
+        tweet["text"].encode("utf-8")
+
+        tweet_check = open(tweet_check_file_path, mode="w")
+        tweet_check.write(tweet["text"])
         tweet_check.close()
 
-        helpers._info('tootTheTweet() => New tweet ' + tweet_id + ' => "' + tweet['text'] + '".')
+        helpers._info(
+            f'tootTheTweet() => New tweet {tweet_id} => "{tweet["text"]}".'
+        )
 
     response = requests.post(
-        url=host_instance + '/api/v1/statuses', data=data, headers=headers)
+        url=f"{host_instance}/api/v1/statuses", data=data, headers=headers
+    )
 
     if response.status_code == 200:
-
-        helpers._info('tootTheTweet() => OK. Posted tweet ' + tweet_id + 'to Mastodon.')
-        helpers._info('tootTheTweet() => Response: ' + response.text)
-
+        helpers._info(f"tootTheTweet() => OK. Posted tweet {tweet_id} to Mastodon.")
+        helpers._info(f"tootTheTweet() => Response: {response.text}")
         return True
 
     else:
-
-        helpers._info('tootTheTweet() => FAIL. Could not post tweet ' + tweet_id + 'to Mastodon.')
-        helpers._info('tootTheTweet() => Response: ' + response.text)
-
+        helpers._info(
+            f"tootTheTweet() => FAIL. Could not post tweet {tweet_id} to Mastodon."
+        )
+        helpers._info(f"tootTheTweet() => Response: {response.text}")
         return False