save project

diy2.py

+username = "python"
+userpassword = "123456"
+i = 3
+while True:
+    if i < 1:
+        print("次数用完")
+        break
+    name = input("请输入用户名:")
+    password = input("请输入密码:")
+    if username != name:
+        print("账号错误")
+        print('还剩'+str(i-1)+'次机会')
+    elif password != userpassword:
+        print("密码错误")
+        print('还剩'+str(i-1)+'次机会')
+    else:
+        
+        print("登录成功!")
+        print("欢迎来到贝尔编程!")
+    i-=1