Python xml.etree.ElementTree 模块，ProcessingInstruction() 实例源码
我们从Python开源项目中，提取了以下17个代码示例，用于说明如何使用xml.etree.ElementTree.ProcessingInstruction()。
def processinginstruction():
"""
Test ProcessingInstruction directly
>>> ET.tostring(ET.ProcessingInstruction('test', 'instruction'))
b'<?test instruction?>'
>>> ET.tostring(ET.PI('test', 'instruction'))
b'<?test instruction?>'
Issue #2746
>>> ET.tostring(ET.PI('test', '<testing&>'))
b'<?test <testing&>?>'
>>> ET.tostring(ET.PI('test', '<testing&>\xe3'), 'latin1')
b"<?xml version='1.0' encoding='latin1'?>\\n<?test <testing&>\\xe3?>"
"""
#
# xinclude tests (samples from appendix C of the xinclude specification)
def processinginstruction():
"""
Test ProcessingInstruction directly
>>> ET.tostring(ET.ProcessingInstruction('test', 'instruction'))
'<?test instruction?>'
>>> ET.tostring(ET.PI('test', 'instruction'))
'<?test instruction?>'
Issue #2746
>>> ET.tostring(ET.PI('test', '<testing&>'))
'<?test <testing&>?>'
>>> ET.tostring(ET.PI('test', u'<testing&>\xe3'), 'latin1')
"<?xml version='1.0' encoding='latin1'?>\\n<?test <testing&>\\xe3?>"
"""
#
# xinclude tests (samples from appendix C of the xinclude specification)
def processinginstruction():
"""
Test ProcessingInstruction directly
>>> ET.tostring(ET.ProcessingInstruction('test', 'instruction'))
'<?test instruction?>'
>>> ET.tostring(ET.PI('test', 'instruction'))
'<?test instruction?>'
Issue #2746
>>> ET.tostring(ET.PI('test', '<testing&>'))
'<?test <testing&>?>'
>>> ET.tostring(ET.PI('test', u'<testing&>\xe3'), 'latin1')
"<?xml version='1.0' encoding='latin1'?>\\n<?test <testing&>\\xe3?>"
"""
#
# xinclude tests (samples from appendix C of the xinclude specification)
def processinginstruction():
"""
Test ProcessingInstruction directly
>>> ET.tostring(ET.ProcessingInstruction('test', 'instruction'))
'<?test instruction?>'
>>> ET.tostring(ET.PI('test', 'instruction'))
'<?test instruction?>'
Issue #2746
>>> ET.tostring(ET.PI('test', '<testing&>'))
'<?test <testing&>?>'
>>> ET.tostring(ET.PI('test', u'<testing&>\xe3'), 'latin1')
"<?xml version='1.0' encoding='latin1'?>\\n<?test <testing&>\\xe3?>"
"""
#
# xinclude tests (samples from appendix C of the xinclude specification)
def processinginstruction():
"""
Test ProcessingInstruction directly
>>> ET.tostring(ET.ProcessingInstruction('test', 'instruction'))
'<?test instruction?>'
>>> ET.tostring(ET.PI('test', 'instruction'))
'<?test instruction?>'
Issue #2746
>>> ET.tostring(ET.PI('test', '<testing&>'))
'<?test <testing&>?>'
>>> ET.tostring(ET.PI('test', u'<testing&>\xe3'), 'latin1')
"<?xml version='1.0' encoding='latin1'?>\\n<?test <testing&>\\xe3?>"
"""
#
# xinclude tests (samples from appendix C of the xinclude specification)
def show_xml(document):
from xml.etree import ElementTree as XML
xml_document = XML.Element("results")
legs_xml = XML.SubElement(xml_document, 'legs')
for n, leg in enumerate(document['legs'], start=1):
leg_xml = XML.SubElement(legs_xml, 'leg', n=str(n))
leg_xml.text = leg
teams_xml = XML.SubElement(xml_document, 'teams')
for team in document['teams']:
team_xml = XML.SubElement(teams_xml, "team")
name_xml = XML.SubElement(team_xml, "name")
name_xml.text = team['name']
position_xml = XML.SubElement(team_xml, "position")
for n, position in enumerate(team['position'], start=1):
leg_xml = XML.SubElement(position_xml, "leg", n=str(n))
leg_xml.text = str(position)
pi = XML.ProcessingInstruction("xml", 'version="1.0"')
XML.dump(pi)
XML.dump(xml_document)
def map_node_to_class(self, node):
if isinstance(node, BaseET.ElementTree):
return nodes.Document
elif node.tag == BaseET.ProcessingInstruction:
return nodes.ProcessingInstruction
elif node.tag == BaseET.Comment:
return nodes.Comment
elif isinstance(node, ETAttribute):
return nodes.Attribute
elif isinstance(node, ElementTreeText):
if node.is_cdata:
return nodes.CDATA
else:
return nodes.Text
elif self._is_node_an_element(node):
return nodes.Element
raise exceptions.Xml4hImplementationBug(
'Unrecognized type for implementation node: %s' % node)
def test_wrap_node_and_is_type_methods(self):
# Wrap root element
wrapped_node = self.adapter_class.wrap_node(self.root_elem, self.doc)
self.assertEqual(self.root_elem, wrapped_node.impl_node)
self.assertEqual('DocRoot', wrapped_node.name)
self.assertEqual(self.doc, wrapped_node.impl_document)
self.assertTrue(wrapped_node.is_type(xml4h.nodes.ELEMENT_NODE))
self.assertTrue(wrapped_node.is_element)
# Wrap a non-root element
wrapped_node = self.adapter_class.wrap_node(self.elem3_second, self.doc)
self.assertEqual(self.elem3_second, wrapped_node.impl_node)
self.assertEqual('ns2:Element3', wrapped_node.name)
self.assertEqual('Element4', wrapped_node.parent.name)
self.assertTrue(wrapped_node.is_type(xml4h.nodes.ELEMENT_NODE))
self.assertTrue(wrapped_node.is_element)
# Test node types
wrapped_node = self.adapter_class.wrap_node(self.text_node, self.doc)
self.assertIsInstance(wrapped_node, xml4h.nodes.Text)
self.assertTrue(wrapped_node.is_type(xml4h.nodes.TEXT_NODE))
self.assertTrue(wrapped_node.is_text)
wrapped_node = self.adapter_class.wrap_node(self.cdata_node, self.doc)
self.assertIsInstance(wrapped_node, xml4h.nodes.CDATA)
self.assertTrue(wrapped_node.is_type(xml4h.nodes.CDATA_NODE))
self.assertTrue(wrapped_node.is_cdata)
wrapped_node = self.adapter_class.wrap_node(self.comment_node, self.doc)
self.assertIsInstance(wrapped_node, xml4h.nodes.Comment)
self.assertTrue(wrapped_node.is_type(xml4h.nodes.COMMENT_NODE))
self.assertTrue(wrapped_node.is_comment)
wrapped_node = self.adapter_class.wrap_node(
self.instruction_node, self.doc)
self.assertIsInstance(
wrapped_node, xml4h.nodes.ProcessingInstruction)
self.assertTrue(
wrapped_node.is_type(xml4h.nodes.PROCESSING_INSTRUCTION_NODE))
self.assertTrue(wrapped_node.is_processing_instruction)
def new_impl_instruction(self, target, data):
return self.ET.ProcessingInstruction(target, data)
def get_node_value(self, node):
if node.tag == BaseET.ProcessingInstruction:
name, target = node.text.split(' ')
return target
elif node.tag == BaseET.Comment:
return node.text
elif hasattr(node, 'value'):
return node.value
else:
return node.text
def interface():
"""
Test element tree interface.
>>> element = ET.Element("tag")
>>> check_element(element)
>>> tree = ET.ElementTree(element)
>>> check_element(tree.getroot())
>>> element = ET.Element("t\\xe4g", key="value")
>>> tree = ET.ElementTree(element)
>>> repr(element) # doctest: +ELLIPSIS
"<Element 't\\xe4g' at 0x...>"
>>> element = ET.Element("tag", key="value")
Make sure all standard element methods exist.
>>> check_method(element.append)
>>> check_method(element.extend)
>>> check_method(element.insert)
>>> check_method(element.remove)
>>> check_method(element.getchildren)
>>> check_method(element.find)
>>> check_method(element.iterfind)
>>> check_method(element.findall)
>>> check_method(element.findtext)
>>> check_method(element.clear)
>>> check_method(element.get)
>>> check_method(element.set)
>>> check_method(element.keys)
>>> check_method(element.items)
>>> check_method(element.iter)
>>> check_method(element.itertext)
>>> check_method(element.getiterator)
These methods return an iterable. See bug 6472.
>>> check_method(element.iter("tag").__next__)
>>> check_method(element.iterfind("tag").__next__)
>>> check_method(element.iterfind("*").__next__)
>>> check_method(tree.iter("tag").__next__)
>>> check_method(tree.iterfind("tag").__next__)
>>> check_method(tree.iterfind("*").__next__)
These aliases are provided:
>>> assert ET.XML == ET.fromstring
>>> assert ET.PI == ET.ProcessingInstruction
>>> assert ET.XMLParser == ET.XMLTreeBuilder
"""
def interface():
r"""
Test element tree interface.
>>> element = ET.Element("tag")
>>> check_element(element)
>>> tree = ET.ElementTree(element)
>>> check_element(tree.getroot())
>>> element = ET.Element("t\xe4g", key="value")
>>> tree = ET.ElementTree(element)
>>> repr(element) # doctest: +ELLIPSIS
"<Element 't\\xe4g' at 0x...>"
>>> element = ET.Element("tag", key="value")
Make sure all standard element methods exist.
>>> check_method(element.append)
>>> check_method(element.extend)
>>> check_method(element.insert)
>>> check_method(element.remove)
>>> check_method(element.getchildren)
>>> check_method(element.find)
>>> check_method(element.iterfind)
>>> check_method(element.findall)
>>> check_method(element.findtext)
>>> check_method(element.clear)
>>> check_method(element.get)
>>> check_method(element.set)
>>> check_method(element.keys)
>>> check_method(element.items)
>>> check_method(element.iter)
>>> check_method(element.itertext)
>>> check_method(element.getiterator)
These methods return an iterable. See bug 6472.
>>> check_method(element.iter("tag").next)
>>> check_method(element.iterfind("tag").next)
>>> check_method(element.iterfind("*").next)
>>> check_method(tree.iter("tag").next)
>>> check_method(tree.iterfind("tag").next)
>>> check_method(tree.iterfind("*").next)
These aliases are provided:
>>> assert ET.XML == ET.fromstring
>>> assert ET.PI == ET.ProcessingInstruction
>>> assert ET.XMLParser == ET.XMLTreeBuilder
"""
def interface():
r"""
Test element tree interface.
>>> element = ET.Element("tag")
>>> check_element(element)
>>> tree = ET.ElementTree(element)
>>> check_element(tree.getroot())
>>> element = ET.Element("t\xe4g", key="value")
>>> tree = ET.ElementTree(element)
>>> repr(element) # doctest: +ELLIPSIS
"<Element 't\\xe4g' at 0x...>"
>>> element = ET.Element("tag", key="value")
Make sure all standard element methods exist.
>>> check_method(element.append)
>>> check_method(element.extend)
>>> check_method(element.insert)
>>> check_method(element.remove)
>>> check_method(element.getchildren)
>>> check_method(element.find)
>>> check_method(element.iterfind)
>>> check_method(element.findall)
>>> check_method(element.findtext)
>>> check_method(element.clear)
>>> check_method(element.get)
>>> check_method(element.set)
>>> check_method(element.keys)
>>> check_method(element.items)
>>> check_method(element.iter)
>>> check_method(element.itertext)
>>> check_method(element.getiterator)
These methods return an iterable. See bug 6472.
>>> check_method(element.iter("tag").next)
>>> check_method(element.iterfind("tag").next)
>>> check_method(element.iterfind("*").next)
>>> check_method(tree.iter("tag").next)
>>> check_method(tree.iterfind("tag").next)
>>> check_method(tree.iterfind("*").next)
These aliases are provided:
>>> assert ET.XML == ET.fromstring
>>> assert ET.PI == ET.ProcessingInstruction
>>> assert ET.XMLParser == ET.XMLTreeBuilder
"""
def interface():
r"""
Test element tree interface.
>>> element = ET.Element("tag")
>>> check_element(element)
>>> tree = ET.ElementTree(element)
>>> check_element(tree.getroot())
>>> element = ET.Element("t\xe4g", key="value")
>>> tree = ET.ElementTree(element)
>>> repr(element) # doctest: +ELLIPSIS
"<Element 't\\xe4g' at 0x...>"
>>> element = ET.Element("tag", key="value")
Make sure all standard element methods exist.
>>> check_method(element.append)
>>> check_method(element.extend)
>>> check_method(element.insert)
>>> check_method(element.remove)
>>> check_method(element.getchildren)
>>> check_method(element.find)
>>> check_method(element.iterfind)
>>> check_method(element.findall)
>>> check_method(element.findtext)
>>> check_method(element.clear)
>>> check_method(element.get)
>>> check_method(element.set)
>>> check_method(element.keys)
>>> check_method(element.items)
>>> check_method(element.iter)
>>> check_method(element.itertext)
>>> check_method(element.getiterator)
These methods return an iterable. See bug 6472.
>>> check_method(element.iter("tag").next)
>>> check_method(element.iterfind("tag").next)
>>> check_method(element.iterfind("*").next)
>>> check_method(tree.iter("tag").next)
>>> check_method(tree.iterfind("tag").next)
>>> check_method(tree.iterfind("*").next)
These aliases are provided:
>>> assert ET.XML == ET.fromstring
>>> assert ET.PI == ET.ProcessingInstruction
>>> assert ET.XMLParser == ET.XMLTreeBuilder
"""
def interface():
r"""
Test element tree interface.
>>> element = ET.Element("tag")
>>> check_element(element)
>>> tree = ET.ElementTree(element)
>>> check_element(tree.getroot())
>>> element = ET.Element("t\xe4g", key="value")
>>> tree = ET.ElementTree(element)
>>> repr(element) # doctest: +ELLIPSIS
"<Element 't\\xe4g' at 0x...>"
>>> element = ET.Element("tag", key="value")
Make sure all standard element methods exist.
>>> check_method(element.append)
>>> check_method(element.extend)
>>> check_method(element.insert)
>>> check_method(element.remove)
>>> check_method(element.getchildren)
>>> check_method(element.find)
>>> check_method(element.iterfind)
>>> check_method(element.findall)
>>> check_method(element.findtext)
>>> check_method(element.clear)
>>> check_method(element.get)
>>> check_method(element.set)
>>> check_method(element.keys)
>>> check_method(element.items)
>>> check_method(element.iter)
>>> check_method(element.itertext)
>>> check_method(element.getiterator)
These methods return an iterable. See bug 6472.
>>> check_method(element.iter("tag").next)
>>> check_method(element.iterfind("tag").next)
>>> check_method(element.iterfind("*").next)
>>> check_method(tree.iter("tag").next)
>>> check_method(tree.iterfind("tag").next)
>>> check_method(tree.iterfind("*").next)
These aliases are provided:
>>> assert ET.XML == ET.fromstring
>>> assert ET.PI == ET.ProcessingInstruction
>>> assert ET.XMLParser == ET.XMLTreeBuilder
"""
def setUp(self):
if not xml4h.LXMLAdapter.is_available():
self.skipTest("lxml library is not installed")
from lxml import etree
# Build a DOM using minidom for testing
self.root_elem = etree.Element('{urn:test}DocRoot', nsmap={
None: 'urn:test'})
doc = etree.ElementTree(self.root_elem)
self.elem1 = etree.Element(u'??1',
nsmap={'ns1': 'urn:ns1'})
self.elem1.attrib['a'] = '1'
self.elem1.attrib['{urn:ns1}b'] = '2'
self.elem2 = etree.Element('Element2')
self.elem3 = etree.Element('{urn:ns1}Element3',
nsmap={None: 'urn:ns1'})
self.elem4 = etree.Element('{urn:ns1}Element4',
nsmap={None: 'urn:ns1'})
self.elem2_second = etree.Element('Element2')
self.elem3_second = etree.Element('{urn:ns2}Element3',
nsmap={'ns2': 'urn:ns2'})
self.text_node = xml4h.impls.lxml_etree.LXMLText(
'Some text', self.elem1)
self.elem1.text = self.text_node.text
self.cdata_node = xml4h.impls.lxml_etree.LXMLText(
'Some cdata', self.elem2, is_cdata=True)
self.elem2.text = self.cdata_node.text
self.comment_node = etree.Comment('A comment')
self.instruction_node = etree.ProcessingInstruction(
'pi-target', 'pi-data')
self.root_elem.append(self.elem1)
self.root_elem.append(self.elem2)
self.root_elem.append(self.elem3)
self.root_elem.append(self.elem4)
self.elem3.append(self.elem2_second)
self.elem2_second.append(self.comment_node)
self.elem4.append(self.elem3_second)
self.elem3_second.append(self.instruction_node)
self.doc = doc
self.xml4h_doc = xml4h.LXMLAdapter.wrap_document(doc)
self.xml4h_root = self.xml4h_doc.root
self.xml4h_text = xml4h.LXMLAdapter.wrap_node(self.text_node, self.doc)
def setUp(self):
# Use c-based or pure python ElementTree impl based on test class
if self.__class__ == TestcElementTreeNodes:
if not self.adapter_class.is_available():
self.skipTest(
"C-based ElementTree library is not installed"
" or is too outdated to be supported by xml4h")
import xml.etree.cElementTree as ET
else:
if not self.adapter_class.is_available():
self.skipTest(
"Pure Python ElementTree library is not installed"
" or is not too outdated to be supported by xml4h")
import xml.etree.ElementTree as ET
# Build a DOM using minidom for testing
self.root_elem = ET.Element('{urn:test}DocRoot')
doc = ET.ElementTree(self.root_elem)
self.elem1 = ET.Element(u'??1')
self.elem1.attrib['xmlns:ns1'] = 'urn:ns1'
self.elem1.attrib['a'] = '1'
self.elem1.attrib['{urn:ns1}b'] = '2'
self.elem2 = ET.Element('Element2')
self.elem3 = ET.Element('{urn:ns1}Element3')
self.elem3.attrib['xmlns'] = 'urn:ns1'
self.elem4 = ET.Element('{urn:ns1}Element4')
self.elem3.attrib['xmlns'] = 'urn:ns1'
self.elem2_second = ET.Element('Element2')
self.elem3_second = ET.Element('{urn:ns2}Element3')
self.elem3_second.attrib['xmlns:ns2'] = 'urn:ns2'
self.text_node = xml4h.impls.xml_etree_elementtree.ElementTreeText(
'Some text', self.elem1)
self.elem1.text = self.text_node.text
self.cdata_node = xml4h.impls.xml_etree_elementtree.ElementTreeText(
'Some cdata', self.elem2, is_cdata=True)
self.elem2.text = self.cdata_node.text
self.comment_node = ET.Comment('A comment')
self.instruction_node = ET.ProcessingInstruction(
'pi-target', 'pi-data')
self.root_elem.append(self.elem1)
self.root_elem.append(self.elem2)
self.root_elem.append(self.elem3)
self.root_elem.append(self.elem4)
self.elem3.append(self.elem2_second)
self.elem2_second.append(self.comment_node)
self.elem4.append(self.elem3_second)
self.elem3_second.append(self.instruction_node)
self.doc = doc
self.xml4h_doc = self.adapter_class.wrap_document(doc)
self.xml4h_root = self.xml4h_doc.root
self.xml4h_text = self.adapter_class.wrap_node(
self.text_node, self.doc)