iterparse_filter.py 文件源码

def test_parse():
    import os
    filename = "/Users/dalke/Music/iTunes/iTunes Music Library.xml"
    if not os.path.exists(filename):
        print "Cannot find %r: skipping test" % (filename,)
        return

    # Work through callbacks
    ef = IterParseFilter()
    def print_info(event, ele, state):
        d = {}
        children = iter(ele)
        for child in children:
            key = child.text
            value = children.next().text
            d[key] = value
        print "%r is by %r" % (d["Name"], d.get("Artist", "<unknown>"))
        ele.clear()

    ef.on_end("/plist/dict/dict/dict", print_info)
    ef.handler_parse(open(filename))

    # Work through iterators
    ef = IterParseFilter()
    ef.iter_end("/plist/dict/dict/dict")
    for (event, ele) in ef.iterparse(open(filename)):
        d = {}
        children = iter(ele)
        for child in children:
            key = child.text
            value = children.next().text
            d[key] = value
        print "%r is a %r song" % (d["Name"], d.get("Genre", "<unknown>"))
        ele.clear()