save project

diy2.py

+i = 3
+username = "python"
+userpassword = "123456"
+while True:
+    if i > 0:
+        name = input("请输入用户名:")
+        password = input("请输入密码:")
+        if name == username and password == userpassword:
+            print("登录成功!")
+            break
+        elif name != username:
+            print("用户名输入错误")
+            print("还剩下" + str(i - 1) + "次")
+        else:
+            print("密码错误")
+            print("还剩下" + str(i - 1) + "次")
+    else:
+        print("被锁")
+        exit()
+    i -= 1
+
+
+