Update app.py

app.py

@@ -38,16 +38,25 @@ def respond(
         # パラメータを適切な型に変換（API呼び出し時の文字列対策）
         try:
             max_tokens = int(max_tokens) if max_tokens is not None else 512
+            # max_tokensが0以下の場合は512に設定
+            if max_tokens <= 0:
+                max_tokens = 1
         except (ValueError, TypeError):
             max_tokens = 512
             
         try:
             temperature = float(temperature) if temperature is not None else 0.7
+            # temperatureが0以下の場合は0.7に設定
+            if temperature <= 0:
+                temperature = 0.7
         except (ValueError, TypeError):
             temperature = 0.7
             
         try:
             top_p = float(top_p) if top_p is not None else 0.95
+            # top_pが0以下の場合は0.95に設定
+            if top_p <= 0:
+                top_p = 0.95
         except (ValueError, TypeError):
             top_p = 0.95