added script to help download the model

2026-09-25 06:56:40 +02:00
parent 6f198c3d51
commit d1e6715ad7
1 changed files with 67 additions and 0 deletions
@@ -0,0 +1,67 @@
+#!/usr/bin/env python3
+"""
+Lädt das Qwen2.5-0.5B-Instruct Modell (GGUF) herunter.
+Klein, schnell, gut für Deutsch geeignet.
+
+Aufruf:
+    python download_model.py
+"""
+
+import urllib.request
+import sys
+from pathlib import Path
+
+SCRIPT_DIR = Path(__file__).parent
+MODELS_DIR = SCRIPT_DIR / "models"
+
+MODEL_URL  = "https://huggingface.co/Qwen/Qwen2.5-0.5B-Instruct-GGUF/resolve/main/qwen2.5-0.5b-instruct-q4_k_m.gguf"
+MODEL_FILE = MODELS_DIR / "qwen2.5-0.5b-instruct-q4_k_m.gguf"
+MODEL_SIZE = "~400 MB"
+
+def download_with_progress(url: str, dest: Path):
+    """Lädt eine Datei herunter mit Fortschrittsanzeige."""
+    dest.parent.mkdir(parents=True, exist_ok=True)
+
+    def progress(block_num, block_size, total_size):
+        downloaded = block_num * block_size
+        if total_size > 0:
+            pct = min(downloaded / total_size * 100, 100)
+            mb_done  = downloaded / 1024 / 1024
+            mb_total = total_size / 1024 / 1024
+            bar = "█" * int(pct // 2) + "░" * (50 - int(pct // 2))
+            print(f"\r  [{bar}] {pct:5.1f}%  {mb_done:.1f}/{mb_total:.1f} MB", end="", flush=True)
+
+    print(f"Lade herunter: {url}")
+    print(f"Ziel: {dest}")
+    print(f"Größe: ca. {MODEL_SIZE}\n")
+
+    urllib.request.urlretrieve(url, dest, reporthook=progress)
+    print(f"\n\n✅ Modell erfolgreich gespeichert: {dest}")
+
+def main():
+    if MODEL_FILE.exists():
+        size_mb = MODEL_FILE.stat().st_size / 1024 / 1024
+        print(f"✅ Modell bereits vorhanden: {MODEL_FILE} ({size_mb:.1f} MB)")
+        return
+
+    print("=" * 60)
+    print("  Qwen2.5-0.5B-Instruct Download")
+    print("=" * 60)
+    print(f"  Modell: Qwen2.5-0.5B-Instruct Q4_K_M (quantisiert)")
+    print(f"  Größe:  {MODEL_SIZE}")
+    print(f"  Quelle: Hugging Face")
+    print("=" * 60)
+
+    try:
+        download_with_progress(MODEL_URL, MODEL_FILE)
+    except KeyboardInterrupt:
+        print("\n\n[Abgebrochen] Download unterbrochen.")
+        if MODEL_FILE.exists():
+            MODEL_FILE.unlink()  # Unvollständige Datei löschen
+        sys.exit(1)
+    except Exception as e:
+        print(f"\n\n❌ Fehler beim Download: {e}", file=sys.stderr)
+        sys.exit(1)
+
+if __name__ == "__main__":
+    main()