save project

diy2.py

-a=0
-username = "1"
-userpassword = "1"
-while True:
-    a = input("请输入用户名:")
-    b = input("请输入密码:")
-    a+=1
-    if a == username and b == userpassword:
+i=3
+username = "python"
+userpassword = "123456"
+i-=1
+if i > 0:
+    while True:
+        name = input("请输入用户名:")
+        password = input("请输入密码:")
+        if name == username and password == userpassword:
             break
             break
             print("登录成功!")
             print("登录成功!")
-    else:    
 
 
-        if b !=userpassword:
+            
+        if name!=username:
+        print("用户名和密码错误!请重新输入")
+        if password!=userpassword:
         print("账号错")
         print("账号错")
-        if a !=username:
+        if password!=username:
         print("密码错")
         print("密码错")
-    if a==3:
-        print("你的帐号被锁定")
-        exit()
-print("欢迎来到贝尔编程!")
+    print("欢迎来到贝尔编程!")
+else:
+    print("你帐号没了")
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