使用xml.etree.ElementTree读取pandas、python中的.osm文件

Question

嗨，我正在尝试使用xml.etree.ElementTree读取pandas中的.osm文件。如何获取node中的id和tag k = "" v = ""的值

输入：

<osm version="0.6" generator="CGImap 0.8.6 (895960 spike-06.openstreetmap.org)" copyright="OpenStreetMap and contributors" attribution="http://www.openstreetmap.org/copyright" license="http://opendatacommons.org/licenses/odbl/1-0/">
<bounds minlat="12.5770000" minlon="-2.9532000" maxlat="12.6328000" maxlon="-2.8514000"/>
<node id="902955577" visible="true" version="6" changeset="90170478" timestamp="2020-08-31T06:29:59Z" user="pizzaiolo" uid="1772368" lat="12.6049118" lon="-2.9023135">
<tag k="admin_level" v="8"/>
<tag k="capital" v="8"/>
<tag k="description" v="Commune rurale"/>
<tag k="is_in" v="Toma;Nayala;Boucle du Mouhoun;Burkina Faso;Africa"/>
<tag k="is_in:continent" v="Africa"/>
<tag k="is_in:country" v="Burkina Faso"/>
<tag k="is_in:country_code" v="BF"/>
<tag k="is_in:department" v="Toma"/>
<tag k="is_in:province" v="Nayala"/>
<tag k="is_in:province_code" v="40"/>
<tag k="is_in:region" v="Boucle du Mouhoun"/>
<tag k="is_in:region_code" v="02"/>
<tag k="name" v="Goa"/>
<tag k="name:fr" v="Goa"/>
<tag k="note" v="Inserted by script"/>
<tag k="place" v="village"/>
<tag k="population" v="651"/>
<tag k="source" v="NGA GEOnet Names Server (GNS)"/>
<tag k="source:population" v="INSD.BF"/>
<tag k="wikidata" v="Q13414957"/>
</node>

代码：

from xml.etree.ElementTree import parse
import pandas as pd
mydata = parse('map.osm')
print(mydata,'n')
my_id=[]
for item in mydata.iterfind('node'):
my_id.append(item.findtext('id'))

print(my_id)

输出：<xml.etree.ElementTree.ElementTree object at 0x0000018504B10160>

[None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None]

Answer 1

findtext查找元素，但id不是元素；这是一种特性。您想要item.attrib['id']，或者item.get('id')。