save project

diy2.py

@@ -2,4 +2,20 @@ i=3
 username = "python"
 username = "python"
 userpassword = "123456"
 userpassword = "123456"
 while True:
 while True:
+    if i>0 :   
+        name = input("请输入用户名:\n")
+        password = input("请输入密码:\n")
+        i-=1
+        if name == username and password == userpassword:
+            print("登录成功!")
+            break
+        if name!=username:
+            print("用户名错误!")
+            continue
+        if password!=userpassword:
+            print("密码错误")
+    else:
+        print("请到我司解锁")
+        exit()
 
 
+print("欢迎来到贝尔编程")
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