python 解析xml_丿灬安之若死

 现在有a.xml

<CallLogs>
 <CallLog>
        <Flags>2</Flags>
        <Duration>20</Duration>
        <StartTime>2019-05-10 14:46:55</StartTime>
        <ContactName></ContactName>
        <PhoneNumber>13869833123</PhoneNumber>
    </CallLog>
 <CallLog>
        <Flags>2</Flags>
        <Duration>20</Duration>
        <StartTime>2019-05-10 14:46:55</StartTime>
        <ContactName></ContactName>
        <PhoneNumber>13869833456</PhoneNumber>
    </CallLog>
</CallLogs><CallLogs>
 <CallLog>
        <Flag