save project

.py

 a = []
 a = []
 while True:
 while True:
     b = input('输入：')
     b = input('输入：')
-    if b=='q':
-
-        break
+    if b== 'q':
+        break      
     else:
     else:
+        try:
+            int(b)
+        except: 
+            print("输入整数！")
+            print('——'*30)
+        int(b)
         a.append(b)
         a.append(b)
-print(a)
+print(a)        
\ No newline at end of file