Python – XMLファイルを読み込む(DOMの例)
この例では、XMLファイルを読み込み、その値をPythonの `xml.dom.minidom`を介して出力する方法を示します。
1. XMLファイル
単純なXMLファイルで、後でPythonの `minidom`で解析します。
staff.xml
<?xml version="1.0"?> <company> <name>Mkyong Enterprise</name> <staff id="1001"> <nickname>mkyong</nickname> <salary>100,000</salary> </staff> <staff id="1002"> <nickname>yflow</nickname> <salary>200,000</salary> </staff> <staff id="1003"> <nickname>alex</nickname> <salary>20,000</salary> </staff> </company>
2. DOMの例1
単純なPythonの `minidom`の例です。
dom-example.py
from xml.dom import minidom doc = minidom.parse("staff.xml") # doc.getElementsByTagName returns NodeList name = doc.getElementsByTagName("name")[0]print(name.firstChild.data) staffs = doc.getElementsByTagName("staff") for staff in staffs: sid = staff.getAttribute("id") nickname = staff.getElementsByTagName("nickname")[0] salary = staff.getElementsByTagName("salary")[0] print("id:%s, nickname:%s, salary:%s" % (sid, nickname.firstChild.data, salary.firstChild.data))
出力
Mkyong Enterprise id:1001, nickname:mkyong, salary:100,000 id:1002, nickname:yflow, salary:200,000 id:1003, nickname:alex, salary:20,000
3. DOMの例2
さらに別の `minidom`の例です。
dom-example2.py
from xml.dom import minidom doc = minidom.parse("staff.xml") def getNodeText(node): nodelist = node.childNodes result =[] for node in nodelist: if node.nodeType == node.TEXT__NODE: result.append(node.data) return ''.join(result) name = doc.getElementsByTagName("name")[0]print("Node Name : %s" % name.nodeName) print("Node Value : %s \n" % getNodeText(name)) staffs = doc.getElementsByTagName("staff") for staff in staffs: sid = staff.getAttribute("id") nickname = staff.getElementsByTagName("nickname")[0] salary = staff.getElementsByTagName("salary")[0] print("id:%s, nickname:%s, salary:%s" % (sid, getNodeText(nickname), getNodeText(salary)))
出力
Node Name : name Node Value : Mkyong Enterprise id:1001, nickname:mkyong, salary:100,000 id:1002, nickname:yflow, salary:200,000 id:1003, nickname:alex, salary:20,000
4.プロジェクトデモ
参考文献
: xml.dom.minidom].
https://docs.python.org/3.4/library/xml.dom.html#dom-nodelist-objects
[Python
: Objects in the DOM]