save project

diy1.py

-username = "DCH"    # 保存在服务器数据库中的用户账号（正确的账号）
+username = "DCH"
+E=3    # 保存在服务器数据库中的用户账号（正确的账号）
 userpassword="890613"
 userpassword="890613"
 # 请用input()实现用户输入账号、密码的功能
 # 请用input()实现用户输入账号、密码的功能
 while True:
 while True:
-    
-    name=input("username?")
-    password=input("userpassword?")
-# 如果用户输入的账号、密码正确，提示登陆成功
-    if name==username and password==userpassword:
-        print("成功")
-        break
-    if name!=username:
-        print("Username have own error")
-    if password!=userpassword:
-        print("Userpassword have own error")
+    if E>0:
+        name=input("username?")
+        password=input("userpassword?")
+        E-=1
+        # 如果用户输入的账号、密码正确，提示登陆成功
+        if name==username and password==userpassword:
+            print("成功")
+            break
+        if name!=username:
+            print("Username have own error")
+        if password!=userpassword:
+            print("Userpassword have own error")
+    else:
+        print("Your account has been locked")
+        exit()
 print("Username and userpassword are correct.Wlcome!")
 print("Username and userpassword are correct.Wlcome!")