Python xml.etree.ElementTree 模块，PI 实例源码
我们从Python开源项目中，提取了以下20个代码示例，用于说明如何使用xml.etree.ElementTree.PI。
def writefile():
"""
>>> elem = ET.Element("tag")
>>> elem.text = "text"
>>> serialize(elem)
'<tag>text</tag>'
>>> ET.SubElement(elem, "subtag").text = "subtext"
>>> serialize(elem)
'<tag>text<subtag>subtext</subtag></tag>'
Test tag suppression
>>> elem.tag = None
>>> serialize(elem)
'text<subtag>subtext</subtag>'
>>> elem.insert(0, ET.Comment("comment"))
>>> serialize(elem) # assumes 1.3
'text<!--comment--><subtag>subtext</subtag>'
>>> elem[0] = ET.PI("key", "value")
>>> serialize(elem)
'text<?key value?><subtag>subtext</subtag>'
"""
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 bug_200709_element_comment():
"""
Not sure if this can be fixed, really (since the serializer needs
ET.Comment, not cET.comment).
>>> a = ET.Element('a')
>>> a.append(ET.Comment('foo'))
>>> a[0].tag == ET.Comment
True
>>> a = ET.Element('a')
>>> a.append(ET.PI('foo'))
>>> a[0].tag == ET.PI
True
"""
def writefile():
"""
>>> elem = ET.Element("tag")
>>> elem.text = "text"
>>> serialize(elem)
'<tag>text</tag>'
>>> ET.SubElement(elem, "subtag").text = "subtext"
>>> serialize(elem)
'<tag>text<subtag>subtext</subtag></tag>'
Test tag suppression
>>> elem.tag = None
>>> serialize(elem)
'text<subtag>subtext</subtag>'
>>> elem.insert(0, ET.Comment("comment"))
>>> serialize(elem) # assumes 1.3
'text<!--comment--><subtag>subtext</subtag>'
>>> elem[0] = ET.PI("key", "value")
>>> serialize(elem)
'text<?key value?><subtag>subtext</subtag>'
"""
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 bug_200709_element_comment():
"""
Not sure if this can be fixed, really (since the serializer needs
ET.Comment, not cET.comment).
>>> a = ET.Element('a')
>>> a.append(ET.Comment('foo'))
>>> a[0].tag == ET.Comment
True
>>> a = ET.Element('a')
>>> a.append(ET.PI('foo'))
>>> a[0].tag == ET.PI
True
"""
def writefile():
"""
>>> elem = ET.Element("tag")
>>> elem.text = "text"
>>> serialize(elem)
'<tag>text</tag>'
>>> ET.SubElement(elem, "subtag").text = "subtext"
>>> serialize(elem)
'<tag>text<subtag>subtext</subtag></tag>'
Test tag suppression
>>> elem.tag = None
>>> serialize(elem)
'text<subtag>subtext</subtag>'
>>> elem.insert(0, ET.Comment("comment"))
>>> serialize(elem) # assumes 1.3
'text<!--comment--><subtag>subtext</subtag>'
>>> elem[0] = ET.PI("key", "value")
>>> serialize(elem)
'text<?key value?><subtag>subtext</subtag>'
"""
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 bug_200709_element_comment():
"""
Not sure if this can be fixed, really (since the serializer needs
ET.Comment, not cET.comment).
>>> a = ET.Element('a')
>>> a.append(ET.Comment('foo'))
>>> a[0].tag == ET.Comment
True
>>> a = ET.Element('a')
>>> a.append(ET.PI('foo'))
>>> a[0].tag == ET.PI
True
"""
def writefile():
"""
>>> elem = ET.Element("tag")
>>> elem.text = "text"
>>> serialize(elem)
'<tag>text</tag>'
>>> ET.SubElement(elem, "subtag").text = "subtext"
>>> serialize(elem)
'<tag>text<subtag>subtext</subtag></tag>'
Test tag suppression
>>> elem.tag = None
>>> serialize(elem)
'text<subtag>subtext</subtag>'
>>> elem.insert(0, ET.Comment("comment"))
>>> serialize(elem) # assumes 1.3
'text<!--comment--><subtag>subtext</subtag>'
>>> elem[0] = ET.PI("key", "value")
>>> serialize(elem)
'text<?key value?><subtag>subtext</subtag>'
"""
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 bug_200709_element_comment():
"""
Not sure if this can be fixed, really (since the serializer needs
ET.Comment, not cET.comment).
>>> a = ET.Element('a')
>>> a.append(ET.Comment('foo'))
>>> a[0].tag == ET.Comment
True
>>> a = ET.Element('a')
>>> a.append(ET.PI('foo'))
>>> a[0].tag == ET.PI
True
"""
def writefile():
"""
>>> elem = ET.Element("tag")
>>> elem.text = "text"
>>> serialize(elem)
'<tag>text</tag>'
>>> ET.SubElement(elem, "subtag").text = "subtext"
>>> serialize(elem)
'<tag>text<subtag>subtext</subtag></tag>'
Test tag suppression
>>> elem.tag = None
>>> serialize(elem)
'text<subtag>subtext</subtag>'
>>> elem.insert(0, ET.Comment("comment"))
>>> serialize(elem) # assumes 1.3
'text<!--comment--><subtag>subtext</subtag>'
>>> elem[0] = ET.PI("key", "value")
>>> serialize(elem)
'text<?key value?><subtag>subtext</subtag>'
"""
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 bug_200709_element_comment():
"""
Not sure if this can be fixed, really (since the serializer needs
ET.Comment, not cET.comment).
>>> a = ET.Element('a')
>>> a.append(ET.Comment('foo'))
>>> a[0].tag == ET.Comment
True
>>> a = ET.Element('a')
>>> a.append(ET.PI('foo'))
>>> a[0].tag == ET.PI
True
"""
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
"""