我有一個看起來像這樣的 xml 文件（讓我們調(diào)用它是 abc.xml）。<?xml version="1.0" encoding="UTF-8"?><properties>  <product name="XYZ" version="123"/>  <application-links>    <application-links>      <id>111111111111111</id>      <name>Link_1</name>      <primary>true</primary>      <type>applinks.ABC</type>      <display-url>http://ABC.displayURL</display-url>      <rpc-url>http://ABC.displayURL</rpc-url>    </application-links>  </application-links></properties>我的 python 代碼是這樣的f = open ('file.xml', 'r')from bs4 import BeautifulSoupsoup = BeautifulSoup(f,'lxml')print(soup.product)for applinks in soup.application-links:    print(applinks)打印以下內(nèi)容<product name="XYZ" version="123"></product>Traceback (most recent call last):  File "parse.py", line 7, in <module>    for applinks in soup.application-links:NameError: name 'links' is not defined請你能幫我理解如何打印包含破折號/連字符'-'的標(biāo)簽的行