test_xml_etree.py 文件源码

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
    """