如何用python解析带有命名空间的xml文件

<?xml version="1.0" encoding="UTF-8"?>
<feed xmlns="https://www.w3.org/2005/Atom" xmlns:db="https://www.douban.com/xmlns/" xmlns:gd="https://schemas.google.com/g/2005" xmlns:opensearch="https://a9.com/-/spec/opensearchrss/1.0/"> <feed