save project

diy2.py

+i=0
+username = "python"
+userpassword = "123456"
+while True:
+    name = input("请输入用户名:")
+    password = input("请输入密码:")
+    if name != username 
+        print("用户名错误!请重新输入")
+        if i==3
+            print("温馨提示：您还有"i"次机会")
+            exit()
+        else 
+            i=i+1
+        continue
+    if password != userpassword
+        print("密码错误!请重新输入")
+        if i==3
+            print("温馨提示：您还有"i"次机会")
+            exit()
+        else 
+            i=i+1
+        continue
+    print("登录成功!")
+    break
+print("欢迎来到贝尔编程!")
\ No newline at end of file