elementtree

Python XpathEvaluator without namespace

由 雨燕双飞 提交于 2019-12-10 09:44:01
问题 I need to write a dynamic function that finds elements on a subtree of an ATOM xml document. To do so, I've written something like this: tree = etree.parse(xmlFileUrl) e = etree.XPathEvaluator(tree, namespaces={'def':'http://www.w3.org/2005/Atom'}) entries = e('//def:entry') for entry in entries: mypath = tree.getpath(entry) + "/category" category = e(mypath) The code above fails to find category. The reason is that getpath returns an XPath without namespaces, whereas the XPathEvaluator e()

Iterate over both text and elements in lxml etree

由 随声附和 提交于 2019-12-10 03:09:02
问题 Suppose I have the following XML document: <species> Mammals: <dog/> <cat/> Reptiles: <snake/> <turtle/> Birds: <seagull/> <owl/> </species> Then I get the species element like this: import lxml.etree doc = lxml.etree.fromstring(xml) species = doc.xpath('/species')[0] Now I would like to print a list of animals grouped by species. How could I do it using ElementTree API? 回答1: If you enumerate all of the nodes, you'll see a text node with the class followed by element nodes with the species: >

Insert a node for an element in XML with Python/ElementTree

由 旧巷老猫 提交于 2019-12-09 16:04:20
问题 I need to traverse the XML tree to add sub element when the value is less than 5. For example, this XML can be modified into <?xml version="1.0" encoding="UTF-8"?> <A value="45"> <B value="30"> <C value="10"/> <C value ="20"/> </B> <B value="15"> <C value = "5" /> <C value = "10" /> </B> </A> this XML. <?xml version="1.0" encoding="UTF-8"?> <A value="45"> <B value="30"> <C value="10"/> <C value ="20"/> </B> <B value="15"> <C value = "5"><D name="error"/></C> <C value = "10" /> </B> </A> How

Python ElementTree: Parsing a string and getting ElementTree instance

由 a 夏天 提交于 2019-12-09 05:06:13
问题 I have a string containing XML data that is returned from an http request. I am using ElementTree to parse the data, and I want to then search recursively for an element. According to this question, I can only search recursively with result.findall() if result is of type ElementTree rather than type Element . Now xml.etree.ElementTree.fromstring() , used to parse the string, returns an Element object, while xml.etree.ElementTree.parse() , used to parse a file , returns an ElementTree object.

using fromstring() with lxml prefixes

由 ﹥＞﹥吖頭↗ 提交于 2019-12-09 03:06:27
I have a variable ele. I'm trying to append a child node onto ele that contains a namespace prefix (called style) in its tag. ele seems to be aware of this prefix, as the line: print(ele.nsmap['style']) outputs urn:oasis:names:tc:opendocument:xmlns:style:1.0 But when I try to run ele.append(etree.fromstring('<style:style />')) I get the error lxml.etree.XMLSyntaxError: Namespace prefix style on style is not defined What am I missing here? etree.fromstring('<style:style />') throws an error because <style:style /> is a small XML document that is not namespace-well-formed . You have to declare

Python ElementTree parsing unbound prefix error

由 偶尔善良 提交于 2019-12-09 02:26:27
问题 I am learning ElementTree in python. Everything seems fine except when I try to parse the xml file with prefix: test.xml : <?xml version="1.0"?> <abc:data> <abc:country name="Liechtenstein" rank="1" year="2008"> </abc:country> <abc:country name="Singapore" rank="4" year="2011"> </abc:country> <abc:country name="Panama" rank="5" year="2011"> </abc:country> </abc:data> When I try to parse the xml: import xml.etree.ElementTree as ET tree = ET.parse('test.xml') I got the following error: xml

Python version 2.7: XML ElementTree: How to iterate through certain elements of a child element in order to find a match

由 守給你的承諾、 提交于 2019-12-09 00:32:21
问题 I'm a programming novice and only rarely use python so please bear with me as I try to explain what I am trying to do :) I have the following XML: <?xml version = "1.0" encoding = "utf-8"?> <Patients> <Patient> <PatientCharacteristics> <patientCode>3</patientCode> </PatientCharacteristics> <Visits> <Visit> <DAS> <CRP>14</CRP> <ESR/> <Joints> <DAS_PROFILE>28/28</DAS_PROFILE> <SWOL28>20</SWOL28> <TEN28>20</TEN28> </Joints> </DAS> <VisitDate>2010-02-17</VisitDate> </Visit> <Visit> <DAS> <CRP>10<

How do I set attributes for an XML element with Python?

由 和自甴很熟 提交于 2019-12-08 23:32:20
问题 I am using ElementTree to build an XML file. When I try to set an element's attribute with ET.SubElement().__setattr__() , I get the error AttributeError: __setattr__ . import xml.etree.cElementTree as ET summary = open(Summary.xml, 'w') root = ET.Element('Summary') ET.SubElement(root, 'TextSummary') ET.SubElement(root,'TextSummary').__setattr__('Status','Completed') # Error occurs here tree = ET.ElementTree(root) tree.write(summary) summary.close() After code execution, my XML should

ElementTree TypeError “write() argument must be str, not bytes” in Python3

由 此生再无相见时 提交于 2019-12-08 17:21:16
问题 Got a Problem with generating a .SVG File with Python3 and ElementTree. from xml.etree import ElementTree as et doc = et.Element('svg', width='480', height='360', version='1.1', xmlns='http://www.w3.org/2000/svg') #Doing things with et and doc f = open('sample.svg', 'w') f.write('<?xml version=\"1.0\" standalone=\"no\"?>\n') f.write('<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.1//EN\"\n') f.write('\"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd\">\n') f.write(et.tostring(doc)) f.close() The

Parse all the xml files in a directory one by one using ElementTree

由 不问归期 提交于 2019-12-08 15:01:15
问题 I'm parsing XML in python by ElementTree import xml.etree.ElementTree as ET tree = ET.parse('try.xml') root = tree.getroot() I wish to parse all the 'xml' files in a given directory. The user should enter only the directory name and I should be able to loop through all the files in directory and parse them one by one. Can someone tell me the approach. I'm using Linux. 回答1: Just create a loop over os.listdir() : import os path = '/path/to/directory' for filename in os.listdir(path): if not
订阅 elementtree