auto save

func.py

+def bendan():
+    while True:
+        try:
+            print("-"*503)
+            unit = float(input("请输入："))
+        except:
+            if unit == 'q':
+                break
+            else:
+                print("� � �")
+        else:
+            total.append(unit)
+
 total = []
 total = []
-while True:
-    unit= input("请输入：")
-    if unit== 'q':
-        break
-    else:
-        total.append(unit)
-print(total)
+bendan()
+print(sum(total))
\ No newline at end of file