save project

h.py

+i=3
+username = "python"
+userpassword = "123456"
+while True:
+    if i>0:
+        name = input("请输入用户名:")
+        if name != username:
+            print("没有此账号")
+            i-=1
+            print("温馨提示:你还有"+str(i)+"次登录机会")
+        else:
+            password = input("请输入密码:")
+            if password != userpassword:
+                print("不匹配")
+                i-=1
+                print("温馨提示:你还有"+str(i)+"次登录机会")
+            else:
+                print("登录成功!")
+                break
+
+            print("用户名和密码错误!请重新输入")
+    else:
+        print("你的登录次数已经用完")
+        exit()
\ No newline at end of file