the index match incorrect while use selector with child model

[five3]

context code: selectors = d(resourceId="com.autohome.main.article:id/article_list_ahpullview_intell", className="android.widget.ListView")\ .child(className="android.widget.LinearLayout") for selector in selectors :

code is ok: (instance=0 use for child) selector.child(text="广告", className="android.widget.TextView").exists code is not ok: selector.child(text="广告", className="android.widget.TextView")[0].exists code is ok: => 1 selector.child(text="广告", className="android.widget.TextView").count