save project

diy2.py

+username = "python"
+userpassword = "123456"
+i=3
+while True:
+  if i >0:
+    print("登录次数:"+sty(i)+"次")
+      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("用户名请重新输入")
+        continue
+      if password!=userpassword: 
+          print("密码不对")  
+   else:
+       print("账号已锁定") 
+       exit()
+print("欢迎来到贝尔编程!")
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