save project

func.py

@@ -4,5 +4,10 @@ while True:
     if b == 'q':
         break
     else:
-        a.append(b)
+        try:
+            changshi = int(b)
+        except:
+            print('请重新输入一个数字')
+        else:
+            a.append(b)
 print(a)    
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