save project

diy2.py

+username = "python"
+userpassword = "123456"
+i=3
+while True:
+    if i>0:
+        print("你还有"+str(i)+"机会")
+        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
+            print("欢迎来到贝尔编程!")
+        if name!=username :
+            print("用户不存在请重新输入")
+            continue
+        if password!=userpassword:
+                print("密码错误，请重新输入")
+                continue
+    else:
+        print("账号已锁定")