build python version rag-flow (#21)

* clean rust version project

* clean rust version project

* build python version rag-flow

python/]

@@ -0,0 +1,63 @@
+from abc import ABC
+from openai import OpenAI
+import os
+import base64
+from io import BytesIO
+
+class Base(ABC):
+    def describe(self, image, max_tokens=300):
+        raise NotImplementedError("Please implement encode method!")
+
+
+class GptV4(Base):
+    def __init__(self):
+        import openapi
+        openapi.api_key = os.environ["OPENAPI_KEY"]
+        self.client = OpenAI()
+
+    def describe(self, image, max_tokens=300):
+        buffered = BytesIO()
+        try:
+            image.save(buffered, format="JPEG")
+        except Exception as e:
+            image.save(buffered, format="PNG")
+        b64 = base64.b64encode(buffered.getvalue()).decode("utf-8")
+
+        res = self.client.chat.completions.create(
+            model="gpt-4-vision-preview",
+            messages=[
+              {
+                "role": "user",
+                "content": [
+                  {
+                    "type": "text",
+                    "text": "请用中文详细描述一下图中的内容，比如时间，地点，人物，事情，人物心情等。",
+                  },
+                  {
+                    "type": "image_url",
+                    "image_url": {
+                      "url": f"data:image/jpeg;base64,{b64}"
+                    },
+                  },
+                ],
+              }
+            ],
+            max_tokens=max_tokens,
+        )
+        return res.choices[0].message.content.strip()
+
+
+class QWen(Base):
+    def chat(self, system, history, gen_conf):
+        from http import HTTPStatus
+        from dashscope import Generation
+        from dashscope.api_entities.dashscope_response import Role
+        # export DASHSCOPE_API_KEY=YOUR_DASHSCOPE_API_KEY
+        response = Generation.call(
+                    Generation.Models.qwen_turbo,
+                    messages=messages,
+                    result_format='message'
+        )
+        if response.status_code == HTTPStatus.OK:
+            return response.output.choices[0]['message']['content']
+        return response.message