Create app_2.py

app_2.py

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+import os, gradio as gr, mimetypes, threading
+from google import genai
+from google.genai import types
+
+client = genai.Client(api_key=os.environ["GEMINI_API_KEY"])
+MODEL = "gemini-3.1-flash-lite-preview"
+
+def model_chat(message, state):
+    if state is None:
+        state = {"chat": client.chats.create(model=MODEL), "lock": threading.Lock()}
+
+    parts = []
+    if message.get("text"):
+        parts.append(types.Part.from_text(text=message["text"]))
+
+    for file_path in message.get("files") or []:
+        mime, _ = mimetypes.guess_type(file_path)
+        mime = mime or "application/octet-stream"
+        with open(file_path, "rb") as f:
+            parts.append(types.Part.from_bytes(data=f.read(), mime_type=mime))
+
+    if not parts:
+        yield "Bitte Text oder Datei senden.", state
+        return
+
+    with state["lock"]:
+        out = ""
+        for chunk in state["chat"].send_message_stream(parts):
+            if chunk.text:
+                out += chunk.text
+                yield out, state
+
+demo = gr.ChatInterface(
+    fn=model_chat,
+    multimodal=True,
+    additional_inputs=[gr.State(None)],
+    additional_outputs=[gr.State(None)],
+)
+
+demo.launch()