Add retry logic for HTTP 409 Conflict errors

- Retry up to 3 times with 5 second delay on HTTP 409 errors
- Only retry on Conflict errors, other errors fail immediately
- Provides clear feedback on retry attempts

create_playlist.py

@@ -6,6 +6,7 @@ Create YouTube Music playlist "Core Fest 2025" with top 3 songs from each festiv
 import os
 import sys
 import json
+import time
 from ytmusicapi import YTMusic
 from ytmusicapi.auth.browser import setup_browser
 
@@ -165,18 +166,37 @@ def main():
                 print(f"  ⚠ No new songs to add for {band} (may be duplicates)")
                 continue
 
-            # Add songs to playlist
-            try:
-                yt.add_playlist_items(playlist_id, songs_to_add)
-                print(f"  ✓ Added {len(songs_to_add)} song(s):")
-                for result in search_results[:len(songs_to_add)]:
-                    title = result.get("title", "Unknown")
-                    artist = result.get("artists", [{}])[0].get("name", "Unknown")
-                    print(f"    - {title} by {artist}")
-                total_added += len(songs_to_add)
-            except Exception as e:
-                print(f"  ✗ Error adding songs: {e}")
-                failed_bands.append(band)
+            # Add songs to playlist with retry logic for HTTP 409 conflicts
+            max_retries = 3
+            retry_delay = 5  # seconds
+            added_successfully = False
+            
+            for attempt in range(1, max_retries + 1):
+                try:
+                    yt.add_playlist_items(playlist_id, songs_to_add)
+                    print(f"  ✓ Added {len(songs_to_add)} song(s):")
+                    for result in search_results[:len(songs_to_add)]:
+                        title = result.get("title", "Unknown")
+                        artist = result.get("artists", [{}])[0].get("name", "Unknown")
+                        print(f"    - {title} by {artist}")
+                    total_added += len(songs_to_add)
+                    added_successfully = True
+                    break
+                except Exception as e:
+                    error_msg = str(e)
+                    # Check if it's an HTTP 409 Conflict error
+                    if "409" in error_msg or "Conflict" in error_msg:
+                        if attempt < max_retries:
+                            print(f"  ⚠ HTTP 409 Conflict on attempt {attempt}/{max_retries}. Retrying in {retry_delay} seconds...")
+                            time.sleep(retry_delay)
+                        else:
+                            print(f"  ✗ Error adding songs after {max_retries} attempts: {e}")
+                            failed_bands.append(band)
+                    else:
+                        # For other errors, don't retry
+                        print(f"  ✗ Error adding songs: {e}")
+                        failed_bands.append(band)
+                        break
 
         except Exception as e:
             print(f"  ✗ Error searching for {band}: {e}")