save project

func.py

-try:
-    unit= input("请输入:")
+def new_input():
 while True:
-    unit= input("请输入:")
-    if unit== '':
+    unit= input("请输入单价（q退出）：")
+    if unit== 'q':
         break
     else:
-        total.append(unit)
-print(total)
\ No newline at end of file
+        try:
+            unit=int (unit)
+        except:
+            print("请重新输入一个数字")
+        else:
+             total.append(unit)
+new_input()
+print(total[0])