Fix `clear` command performance in Windows

cli_demo.py

@@ -1,10 +1,13 @@
 import os
+import platform
 from transformers import AutoTokenizer, AutoModel
 
-tokenizer = AutoTokenizer.from_pretrained("THUDM/chatglm-6b", trust_remote_code=True)
-model = AutoModel.from_pretrained("THUDM/chatglm-6b", trust_remote_code=True).half().cuda()
+tokenizer = AutoTokenizer.from_pretrained("chatglm-6b", trust_remote_code=True)
+model = AutoModel.from_pretrained("chatglm-6b", trust_remote_code=True).half().cuda()
 model = model.eval()
 
+os_name = platform.system()
+
 history = []
 print("欢迎使用 ChatGLM-6B 模型，输入内容即可进行对话，clear 清空对话历史，stop 终止程序")
 while True:
@@ -13,8 +16,8 @@ while True:
         break
     if query == "clear":
         history = []
-        os.system('clear')
+        command = 'cls' if os_name == 'Windows' else 'clear'
+        os.system(command) 
         continue
     response, history = model.chat(tokenizer, query, history=history)
     print(f"ChatGLM-6B：{response}")
-