save project

diy2.py

+username = "python"
+userpassword = "123456"
+i=3
+while True:
+    if i>0:
+        name = input("请输入用户名:")
+        password = input("请输入密码:")
+        i-=1
+        if name == username and password == userpassword:
+            print("登录成功!")
+            break
+        if name!=username:
+            print('用户名输入错误，请重新输入')
+            print('你还有'+str(i)+'次输入机会。')
+            continue
+        if password!=userpassword:
+    
+            print('密码输入错误，请重新输入')
+            print('你还有'+str(i)+'次输入机会。')
+    else:
+        print('您的账户已被锁定，请携带身份证到我司解锁。')
+        exit()
+print("欢迎来到贝尔编程!")
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