auto save

diy.py

+def food_list():
+    total = []
+    while True:
+        unit = input("请输入：(按q退出)")
+        if "q" == unit:
+            break
+        else:
+            try:
+                unit = int(unit)
+            except:
+                print("输入错误，请重新输入一个数字。")
+            else:
+                total.append(unit)
+            print("-"*30)
+    print(total)
+food_list()
\ No newline at end of file