refactor: replace string concatenations with f-strings

youtube/yt_data_extract/common.py

@@ -212,7 +212,7 @@ def extract_date(date_text):
         month, day, year = parts[-3:]
         month = MONTH_ABBREVIATIONS.get(month[0:3]) # slicing in case they start writing out the full month name
         if month and (re.fullmatch(r'\d\d?', day) is not None) and (re.fullmatch(r'\d{4}', year) is not None):
-            return year + '-' + month + '-' + day
+            return f'{year}-{month}-{day}'
     return None
 
 def check_missing_keys(object, *key_sequences):
@@ -222,7 +222,7 @@ def check_missing_keys(object, *key_sequences):
             for key in key_sequence:
                 _object = _object[key]
         except (KeyError, IndexError, TypeError):
-            return 'Could not find ' + key
+            return f'Could not find {key}'
 
     return None
 
@@ -467,7 +467,7 @@ def extract_item_info(item, additional_info={}):
             ['shortBylineText', 'runs', 0, 'navigationEndpoint', 'browseEndpoint', 'browseId'],
             ['ownerText', 'runs', 0, 'navigationEndpoint', 'browseEndpoint', 'browseId']
         ))
-        info['author_url'] = ('https://www.youtube.com/channel/' + info['author_id']) if info['author_id'] else None
+        info['author_url'] = f'https://www.youtube.com/channel/{info["author_id"]}' if info['author_id'] else None
     info['description'] = extract_formatted_text(multi_deep_get(
         item,
         ['descriptionText'], ['descriptionSnippet'],