auto save

diy2.py

 username = "python"
 username = "python"
 userpassword = "123456"
 userpassword = "123456"
+i=3
 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("用户名输入错误,请重新输入!")
-        continue
-    if password != userpassword:
-        print("密码输入错误,请重新输入!")
+    if i > 0:
+        print("你还有{}次输入的机会!".format(i))
+        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("用户名输入错误,请重新输入!")
+            continue
+        if password != userpassword:
+            print("密码输入错误,请重新输入!")
+      
+    else:
+        print("你的登录次数已经用完,请带身份证到我司解锁!")
+        exit()
 print("欢迎来到贝尔编程!")
 print("欢迎来到贝尔编程!")
\ No newline at end of file