save project

diy2.py

+username = "python"
+userpassword = "123456"
+i = 3
+while True:
+    if i>0:
+        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
+        if name != username:
+            print("用户名错误")
+            print("你还有"+str(i)+"次机会")
+            continue        
+        if password != userpassword:
+            print("密码错误")
+            print("你还有"+str(i)+"次机会")     
+            continue
+    else:
+        print("该用户已被锁定，以为你打开核爆程序")
+        break
+print("欢迎来到贝尔编程!")
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