format code (#14)

python/llm/__init__.py

@@ -0,0 +1 @@
+from .embedding_model import HuEmbedding

python/llm/embedding_model.py

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+from abc import ABC
+from FlagEmbedding import FlagModel
+import torch
+
+class Base(ABC):
+    def encode(self, texts: list, batch_size=32):
+        raise NotImplementedError("Please implement encode method!")
+
+
+class HuEmbedding(Base):
+    def __init__(self):
+        """
+        If you have trouble downloading HuggingFace models, -_^ this might help!!
+
+        For Linux:
+        export HF_ENDPOINT=https://hf-mirror.com
+
+        For Windows:
+        Good luck
+        ^_-
+
+        """
+        self.model = FlagModel("BAAI/bge-large-zh-v1.5",
+                              query_instruction_for_retrieval="为这个句子生成表示以用于检索相关文章：",
+                              use_fp16=torch.cuda.is_available())
+
+    def encode(self, texts: list, batch_size=32):
+        res = []
+        for i in range(0, len(texts), batch_size):
+            res.extend(self.encode(texts[i:i+batch_size]))
+        return res