我们从Python开源项目中，提取了以下25个代码示例，用于说明如何使用xml.etree.ElementTree.ElementPath()。
def path_cache(): """ Check that the path cache behaves sanely. >>> elem = ET.XML(SAMPLE_XML) >>> for i in range(10): ET.ElementTree(elem).find('./'+str(i)) >>> cache_len_10 = len(ET.ElementPath._cache) >>> for i in range(10): ET.ElementTree(elem).find('./'+str(i)) >>> len(ET.ElementPath._cache) == cache_len_10 True >>> for i in range(20): ET.ElementTree(elem).find('./'+str(i)) >>> len(ET.ElementPath._cache) > cache_len_10 True >>> for i in range(600): ET.ElementTree(elem).find('./'+str(i)) >>> len(ET.ElementPath._cache) < 500 True """
def sanity(): """ Import sanity. >>> from xml.etree import ElementTree >>> from xml.etree import ElementInclude >>> from xml.etree import ElementPath """
def simplefind(): """ Test find methods using the elementpath fallback. >>> from xml.etree import ElementTree >>> CurrentElementPath = ElementTree.ElementPath >>> ElementTree.ElementPath = ElementTree._SimpleElementPath() >>> elem = ElementTree.XML(SAMPLE_XML) >>> elem.find("tag").tag 'tag' >>> ElementTree.ElementTree(elem).find("tag").tag 'tag' >>> elem.findtext("tag") 'text' >>> elem.findtext("tog") >>> elem.findtext("tog", "default") 'default' >>> ElementTree.ElementTree(elem).findtext("tag") 'text' >>> summarize_list(elem.findall("tag")) ['tag', 'tag'] >>> summarize_list(elem.findall(".//tag")) ['tag', 'tag', 'tag'] Path syntax doesn't work in this case. >>> elem.find("section/tag") >>> elem.findtext("section/tag") >>> summarize_list(elem.findall("section/tag")) [] >>> ElementTree.ElementPath = CurrentElementPath """
def __enter__(self): from xml.etree import ElementTree self._nsmap = ElementTree._namespace_map self._path_cache = ElementTree.ElementPath._cache # Copy the default namespace mapping ElementTree._namespace_map = self._nsmap.copy() # Copy the path cache (should be empty) ElementTree.ElementPath._cache = self._path_cache.copy() self.checkwarnings.__enter__()
def xpath_tokenizer(p): """ Test the XPath tokenizer. >>> # tests from the xml specification >>> xpath_tokenizer("*") ['*'] >>> xpath_tokenizer("text()") ['text', '()'] >>> xpath_tokenizer("@name") ['@', 'name'] >>> xpath_tokenizer("@*") ['@', '*'] >>> xpath_tokenizer("para[1]") ['para', '[', '1', ']'] >>> xpath_tokenizer("para[last()]") ['para', '[', 'last', '()', ']'] >>> xpath_tokenizer("*/para") ['*', '/', 'para'] >>> xpath_tokenizer("/doc/chapter[5]/section[2]") ['/', 'doc', '/', 'chapter', '[', '5', ']', '/', 'section', '[', '2', ']'] >>> xpath_tokenizer("chapter//para") ['chapter', '//', 'para'] >>> xpath_tokenizer("//para") ['//', 'para'] >>> xpath_tokenizer("//olist/item") ['//', 'olist', '/', 'item'] >>> xpath_tokenizer(".") ['.'] >>> xpath_tokenizer(".//para") ['.', '//', 'para'] >>> xpath_tokenizer("..") ['..'] >>> xpath_tokenizer("../@lang") ['..', '/', '@', 'lang'] >>> xpath_tokenizer("chapter[title]") ['chapter', '[', 'title', ']'] >>> xpath_tokenizer("employee[@secretary and @assistant]") ['employee', '[', '@', 'secretary', '', 'and', '', '@', 'assistant', ']'] >>> # additional tests >>> xpath_tokenizer("{http://spam}egg") ['{http://spam}egg'] >>> xpath_tokenizer("./spam.egg") ['.', '/', 'spam.egg'] >>> xpath_tokenizer(".//{http://spam}egg") ['.', '//', '{http://spam}egg'] """ from xml.etree import ElementPath out = [] for op, tag in ElementPath.xpath_tokenizer(p): out.append(op or tag) return out
