Python 按键属性访问子级
使用Python 按键属性访问子级,python,xml.etree,Python,Xml.etree,使用xml.etree我需要通过键标识符访问元素 以身作则 <?xml version="1.0" encoding="utf-8" ?> <Models> <Model Id="1" Name="booname" Description="boo" Filter="b"> <ModelVariables> <Variable Id="1" Token="tothh" />
xml.etree
我需要通过键标识符访问元素
以身作则
<?xml version="1.0" encoding="utf-8" ?>
<Models>
<Model Id="1" Name="booname" Description="boo" Filter="b">
<ModelVariables>
<Variable Id="1" Token="tothh" />
<Variable Id="2" Token="avgtt" />
</ModelVariables>
<Terms>
<Term Id="1" Description="ln1" Coefficient="0.24160834" />
<Term Id="2" Description="ln2" Coefficient="-0.09360441" />
</Terms>
</Model>
<Model Id="2" Name="fooname" Description="foo" Filter="f">
<Terms>
<Term Id="1" Description="e1" Coefficient="0.36310718" />
<Term Id="2" Description="e2" Coefficient="-0.24160834" />
</Terms>
</Model>
</Models>
如何根据id值访问元素?如果参数2被传递,那么访问modelfooname
的所有属性的最直接方法是什么
我尝试使用带有不同参数的
findtext
、find
和get
方法,但无法访问所需的元素 xml.etree.ElementTree
,但这足以通过属性的特定值获取元素:
import xml.etree.ElementTree as ET
data = """<?xml version="1.0" encoding="utf-8" ?>
<Models>
<Model Id="1" Name="booname" Description="boo" Filter="b">
<ModelVariables>
<Variable Id="1" Token="tothh" />
<Variable Id="2" Token="avgtt" />
</ModelVariables>
<Terms>
<Term Id="1" Description="ln1" Coefficient="0.24160834" />
<Term Id="2" Description="ln2" Coefficient="-0.09360441" />
</Terms>
</Model>
<Model Id="2" Name="fooname" Description="foo" Filter="f">
<Terms>
<Term Id="1" Description="e1" Coefficient="0.36310718" />
<Term Id="2" Description="e2" Coefficient="-0.24160834" />
</Terms>
</Model>
</Models>"""
root = ET.fromstring(data)
id_value = "2"
model = root.findall(".//Model[@Id='%s']" % id_value)[0]
print(model.attrib)
注意使用
.attrib
访问元素属性。xml.etree.ElementTree
,但这足以通过属性的特定值获取元素:
import xml.etree.ElementTree as ET
data = """<?xml version="1.0" encoding="utf-8" ?>
<Models>
<Model Id="1" Name="booname" Description="boo" Filter="b">
<ModelVariables>
<Variable Id="1" Token="tothh" />
<Variable Id="2" Token="avgtt" />
</ModelVariables>
<Terms>
<Term Id="1" Description="ln1" Coefficient="0.24160834" />
<Term Id="2" Description="ln2" Coefficient="-0.09360441" />
</Terms>
</Model>
<Model Id="2" Name="fooname" Description="foo" Filter="f">
<Terms>
<Term Id="1" Description="e1" Coefficient="0.36310718" />
<Term Id="2" Description="e2" Coefficient="-0.24160834" />
</Terms>
</Model>
</Models>"""
root = ET.fromstring(data)
id_value = "2"
model = root.findall(".//Model[@Id='%s']" % id_value)[0]
print(model.attrib)
注意使用.attrib
访问元素属性