python中的xml元素属性到列表中

我有一个类似xml的列表，我的目标是将每个对位的X和Y放在一个列表中。如何在python中实现这一点？先谢谢你

<Assembly>
  <Part ASSEMBLY_POS="A12G3" PART_ID="2612666" PART_POS="Y366" MATERIAL="SN490B" PROFILE="PL12">
    <ContourPoint X="19700.001848" Y="21760.00407" Z="37863">
      <Chamfer DZ1="0" DZ2="0" TYPE="CHAMFER_NONE" X="0" Y="0" />
    </ContourPoint>
    <ContourPoint X="19700.001848" Y="21760.00407" Z="38213">
      <Chamfer DZ1="0" DZ2="0" TYPE="CHAMFER_NONE" X="0" Y="0" />
    </ContourPoint>
    <ContourPoint X="20018.001848" Y="21760.00407" Z="38213">
      <Chamfer DZ1="0" DZ2="0" TYPE="CHAMFER_ARC" X="35" Y="35" />
    </ContourPoint>
    <ContourPoint X="20018.001848" Y="21760.00407" Z="37507">
      <Chamfer DZ1="0" DZ2="0" TYPE="CHAMFER_ARC" X="35" Y="35" />
    </ContourPoint>
    <ContourPoint X="19820.001848" Y="21760.00407" Z="37507">
      <Chamfer DZ1="0" DZ2="0" TYPE="CHAMFER_NONE" X="0" Y="0" />
    </ContourPoint>
    <ContourPoint X="19820.001848" Y="21760.00407" Z="37863">
      <Chamfer DZ1="0" DZ2="0" TYPE="CHAMFER_ROUNDING" X="15" Y="0" />
    </ContourPoint>
  </Part>

</Assembly>

结帐

---

第一个近似值可以是：

import xml.etree.ElementTree as ET

tree = ET.parse('file.xml')
root = tree.getroot()

# Or from a variable
# root = ET.fromstring(data_as_string)

part = root.getchildren()[0]

points = []
for child in part:
    points.append((float(child.attrib['X']), float(child.attrib['Y'])))

print(points)

资料来源：

---

警告xml.etree.ElementTree模块对恶意构造的数据不安全。如果需要解析不受信任或未经身份验证的数据，请参阅XML漏洞。

这里有一种使用sax解析的替代方法，对于此类数据可能更简单一些

data = """<?xml version="1.0"?>
<Assembly>
<Part ASSEMBLY_POS="A12G3" PART_ID="2612666" PART_POS="Y366" MATERIAL="SN490B" PROFILE="PL12">
    <ContourPoint X="19700.001848" Y="21760.00407" Z="37863">
    <Chamfer DZ1="0" DZ2="0" TYPE="CHAMFER_NONE" X="0" Y="0" />
    </ContourPoint>
    <ContourPoint X="19700.001848" Y="21760.00407" Z="38213">
    <Chamfer DZ1="0" DZ2="0" TYPE="CHAMFER_NONE" X="0" Y="0" />
    </ContourPoint>
    <ContourPoint X="20018.001848" Y="21760.00407" Z="38213">
    <Chamfer DZ1="0" DZ2="0" TYPE="CHAMFER_ARC" X="35" Y="35" />
    </ContourPoint>
    <ContourPoint X="20018.001848" Y="21760.00407" Z="37507">
    <Chamfer DZ1="0" DZ2="0" TYPE="CHAMFER_ARC" X="35" Y="35" />
    </ContourPoint>
    <ContourPoint X="19820.001848" Y="21760.00407" Z="37507">
    <Chamfer DZ1="0" DZ2="0" TYPE="CHAMFER_NONE" X="0" Y="0" />
    </ContourPoint>
    <ContourPoint X="19820.001848" Y="21760.00407" Z="37863">
    <Chamfer DZ1="0" DZ2="0" TYPE="CHAMFER_ROUNDING" X="15" Y="0" />
    </ContourPoint>
</Part>

</Assembly>
"""

import xml.sax

class AssemblyHandler(xml.sax.ContentHandler):
    def startElement(self, name, attrs):
        if name == "Part":
            print("PART")
        elif name == "ContourPoint":
            print(attrs.get('X'), attrs.get('Y'))

xml.sax.parseString(data, AssemblyHandler())

data=”“”
"""
导入xml.sax
类AssemblyHandler（xml.sax.ContentHandler）：
def startElement（自身、名称、属性）：
如果名称==“零件”：
打印（“部分”）
elif名称==“轮廓点”：
打印（attrs.get（'X'）、attrs.get（'Y'））
parseString（数据，AssemblyHandler（））

找到具有各自标记名的所有标记（在本例中为属性“X”和“Y”），并使用列表理解迭代结果，以将属性值添加到列表中

data='''<Assembly>
  <Part ASSEMBLY_POS="A12G3" PART_ID="2612666" PART_POS="Y366" MATERIAL="SN490B" PROFILE="PL12">
    <ContourPoint X="19700.001848" Y="21760.00407" Z="37863">
      <Chamfer DZ1="0" DZ2="0" TYPE="CHAMFER_NONE" X="0" Y="0" />
    </ContourPoint>
    <ContourPoint X="19700.001848" Y="21760.00407" Z="38213">
      <Chamfer DZ1="0" DZ2="0" TYPE="CHAMFER_NONE" X="0" Y="0" />
    </ContourPoint>
    <ContourPoint X="20018.001848" Y="21760.00407" Z="38213">
      <Chamfer DZ1="0" DZ2="0" TYPE="CHAMFER_ARC" X="35" Y="35" />
    </ContourPoint>
    <ContourPoint X="20018.001848" Y="21760.00407" Z="37507">
      <Chamfer DZ1="0" DZ2="0" TYPE="CHAMFER_ARC" X="35" Y="35" />
    </ContourPoint>
    <ContourPoint X="19820.001848" Y="21760.00407" Z="37507">
      <Chamfer DZ1="0" DZ2="0" TYPE="CHAMFER_NONE" X="0" Y="0" />
    </ContourPoint>
    <ContourPoint X="19820.001848" Y="21760.00407" Z="37863">
      <Chamfer DZ1="0" DZ2="0" TYPE="CHAMFER_ROUNDING" X="15" Y="0" />
    </ContourPoint>
  </Part>
</Assembly>'''
import xml.etree.ElementTree as ET
root = ET.fromstring(data)
points = root.findall('.//ContourPoint')
print [(each.attrib['X'],each.attrib['Y']) for each in points]

---

谢谢你，它做的很好。

data='''<Assembly>
  <Part ASSEMBLY_POS="A12G3" PART_ID="2612666" PART_POS="Y366" MATERIAL="SN490B" PROFILE="PL12">
    <ContourPoint X="19700.001848" Y="21760.00407" Z="37863">
      <Chamfer DZ1="0" DZ2="0" TYPE="CHAMFER_NONE" X="0" Y="0" />
    </ContourPoint>
    <ContourPoint X="19700.001848" Y="21760.00407" Z="38213">
      <Chamfer DZ1="0" DZ2="0" TYPE="CHAMFER_NONE" X="0" Y="0" />
    </ContourPoint>
    <ContourPoint X="20018.001848" Y="21760.00407" Z="38213">
      <Chamfer DZ1="0" DZ2="0" TYPE="CHAMFER_ARC" X="35" Y="35" />
    </ContourPoint>
    <ContourPoint X="20018.001848" Y="21760.00407" Z="37507">
      <Chamfer DZ1="0" DZ2="0" TYPE="CHAMFER_ARC" X="35" Y="35" />
    </ContourPoint>
    <ContourPoint X="19820.001848" Y="21760.00407" Z="37507">
      <Chamfer DZ1="0" DZ2="0" TYPE="CHAMFER_NONE" X="0" Y="0" />
    </ContourPoint>
    <ContourPoint X="19820.001848" Y="21760.00407" Z="37863">
      <Chamfer DZ1="0" DZ2="0" TYPE="CHAMFER_ROUNDING" X="15" Y="0" />
    </ContourPoint>
  </Part>
</Assembly>'''
import xml.etree.ElementTree as ET
root = ET.fromstring(data)
points = root.findall('.//ContourPoint')
print [(each.attrib['X'],each.attrib['Y']) for each in points]

[('19700.001848', '21760.00407'), ('19700.001848', '21760.00407'), ('20018.001848', '21760.00407'), ('20018.001848', '21760.00407'), ('19820.001848', '21760.00407'), ('19820.001848', '21760.00407')]