save project

func.py

 def bfs():
     total = []
     while True:
-        unit= input("请输入：")
-        if unit== 'q':
-            break
-        else:
-            total.append(unit)        
+        try:
+            unit= input("请输入：")
+            if unit== 'q':
+                 break                                       
+            else:    
+                total.append(int(unit))
+        except:
+            print("只能输入整数或'q'")              
     print(total)    
\ No newline at end of file

qa.py

+try:
+    age=int(input("你今年几岁"))
+except:
+    print('要输入整数')
+else:
+    if age<18:
+        print('不可以喝酒噢')    
+print("程序结束")        
\ No newline at end of file