save project

func.py

 def sy():
 def sy():
     total = []
     total = []
     while True:
     while True:
-        unit= input("请输入：")
-        if unit== 'q':
+        un= input("请输入：")
+        if un== 'q':
             break
             break
         else:
         else:
-            total.append(unit)
+            try:
+                un=int(un)
+            except:
+                print('请重新输入一个数字')
+            else:
+                total.append(un)
+            print('-'*30)
     print(total)
     print(total)
-sy()
+    return total
\ No newline at end of file
+
+def sum(u):
+    c=0
+    for a in u:
+        c=c+a
+    return c
+r=sy()
+pay = sum(r)
+print("您一共消费了"+str(pay)+'元，扫码还是现金')
\ No newline at end of file