save project

diy2.py

 username = "python"
 username = "python"
 userpassword = "123456"
 userpassword = "123456"
+i=5
 while True:
 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
-    if name != username: 
-        print("用户名错误,请重新登录")
-        continue
-    if password != userpassword:
-         print("密码错误,请重新登录")  
-    print("用户名和密码错误!请重新输入")
+    if i>0:
+        i-=1
+        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
+        if name != username: 
+            print("用户名错误,请重新登录")
+            print("剩下"+str(i)+"尝试机会")
+        elif password != userpassword
+            print("密码错误,请重新登录")
+            print("剩下"+str(i)+"尝试机会")
+    else:
+        print("输入次数以超出上限，请拿生分证来我司解锁!")
+        exit()
 print("欢迎来到贝尔编程!")
 print("欢迎来到贝尔编程!")