Update app.py

app.py

@@ -47,6 +47,8 @@ def download_comments(video_id: str) -> pd.DataFrame:
     Returns: DataFrame: A DataFrame containing the downloaded comments from the video.
     """
     DEV_KEY = os.getenv('API_KEY_YOUTUBE')
+    if DEV_KEY:
+        print("Key is ok")
     youtube = googleapiclient.discovery.build("youtube",
                                               "v3",
                                               developerKey=DEV_KEY)