save project

diy2.py

 username = "python"
 userpassword = "123456"
+i=3
 while True:
-    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("用户名错误!请重新输入")
-    else:   
-       print("用密码错误!请重新输入")
+    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("输入正确，请登录")
+            break
+        if name!=username:
+            print("用户名错误，请重新输入")
+            continue
+        if password != userpassword:
+            print("密码错误，请重新输入")
+    else:
+        print("次数用完，请来我公司处理")
+        exit()
 print("欢迎来到贝尔编程!")
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