auto save

func.py

+def sumunit():
+    total = []
+    while True:
+        
+        unit= input("请输入单价(q退出)：")
+        if unit== 'q':
+            break
+        else:
+            try:
+                unit=int(unit)
+            except:
+                print("请重新输入一个数字")
+            else:
+                total.append(unit)
+            finally:
+                print("-"*30)
+    return total
+result=sumunit()  
+print(result)