python爬虫怎么获取伪元素(::after、::before)中的文本?比如如下代码:
# <div id="alertDiv" role="alert" aria-live="rude" ng-bind-html="errorMessages" class="ng-binding">文本内容</div>
::after
# <div id="alertDiv" role="alert" aria-live="rude" ng-bind-html="errorMessages" class="ng-binding">文本内容</div>
::after