disentangle model from tuner and rename modules

src/llmtuner/extras/packages.py

@@ -0,0 +1,55 @@
+import importlib.metadata
+import importlib.util
+
+
+def is_package_available(name: str) -> bool:
+    return importlib.util.find_spec(name) is not None
+
+
+def get_package_version(name: str) -> str:
+    try:
+        return importlib.metadata.version(name)
+    except:
+        return "0.0.0"
+
+
+_fastapi_available = is_package_available("fastapi")
+_flash_attn2_available = is_package_available("flash_attn") and get_package_version("flash_attn").startswith("2")
+_jieba_available = is_package_available("jieba")
+_matplotlib_available = is_package_available("matplotlib")
+_nltk_available = is_package_available("nltk")
+_rouge_available = is_package_available("rouge-chinese")
+_starlette_available = is_package_available("sse-starlette")
+_uvicorn_available = is_package_available("uvicorn")
+
+
+def is_fastapi_availble():
+    return _fastapi_available
+
+
+def is_flash_attn2_available():
+    return _flash_attn2_available
+
+
+def is_jieba_available():
+    return _jieba_available
+
+
+def is_matplotlib_available():
+    return _matplotlib_available
+
+
+def is_nltk_available():
+    return _nltk_available
+
+
+def is_rouge_available():
+    return _rouge_available
+
+
+def is_starlette_available():
+    return _starlette_available
+
+
+def is_uvicorn_available():
+    return _uvicorn_available