save project

diy2.py

+username = "python"
+userpassword = "123456"
+i=3
+while True:
+    if i <1:
+        print("次数用完,登录失败")
+        break
+    name = input("请输入账号")
+    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!")
+        break
+    i -= 1