save project

diy1.py

 A="1234567890"
 B="0987654321"
+E=3
 while True:
-    C=input("用户名:")
-    D=input("密码:")
-    if C==A and B==D:
-        print("登陆成功")
-        break
-    else:
-        if C!=A:
-            print("登陆失败")
-        elif D!=B:
-            print("密码失败")    
+    if E >0: 
+        C=input("用户名:")
+        D=input("密码:")
+        E-=1    
+        if C==A and B==D:
+            print("登陆成功")
+            break
         else:
-            print("密码或登陆失败") 
-
+            if C!=A:
+                print("用户名失败")
+            elif D!=B:
+                print("密码失败")    
+    else:
+        print("次数已经用完，请联系好吊小朋友") 
+        break           
\ No newline at end of file