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How do I search for a Tag in xml file using ElementTree where i have prefixes (python)

I just started learning Python and have to write a program that parses xml files.
I have multiple entries as seen below and I need, as a starting point, to return all the different d:Name entries in a list.
Unfortunately, I can't manage to use findall with prefixes.
import xml.etree.ElementTree as ET
tree = ET.parse('test.xml')
lst = tree.findall('.//{d}Name')
I read that if d is a prefix, I need to use the URI instead of a. But I don't understand which is the URI in my case, or how to make a successful search when i have the following file.
I have an XML that looks like this (simplified):
feed xml:base="http://projectserver/ps/_api/">
<entry>
<id>
http://projectserver/ps/_api/ProjectServer/EnterpriseResources('some id...')
</id>
<content type="application/xml">
<m:properties>
<d:Name>
WHAT I NEED
</d:Name>
</m:properties>
</content>
</entry>
<entry>
...
This bypassed my problem so thank you!
If you are using Python 3.8 or later, this post may help: link – Jim
Rhodes
So I ran the following which returned the list of tags, where i found the {URI}Name which I then used to do the search properly.
for elem in tree.iter():
print(elem.tag)

can we search multiple pattern using etree findall() in xml?

For my case, I have to find few elements in the XML file and update their values using the text attribute. For that, I have to search xml element A, B and C. My project is using xml.etree and python language. Currently I am using:
self.get_root.findall(H/A/T)
self.get_root.findall(H/B/T)
self.get_root.findall(H/C/T)
The sample XML file:
<H><A><T>text-i-have-to-update</H></A></T>
<H><B><T>text-i-have-to-update</H></B></T>
<H><C><T>text-i-have-to-update</H></C></T>
As we can notice, only the middle element in the path is different. Is there a way to optimize the code using something like self.get_root.findall(H|(A,B,C)|T)? Any guidance in the right direction will do! Thanks!
I went through the similar question: XPath to select multiple tags but it didn't work for my case
Update: maybe regular expression inside the findall()?

The html in your question is malformed; assuming it's properly formatted (like below), try this:
import xml.etree.ElementTree as ET
data = """<root>
<H><A><T>text-i-have-to-update</T></A></H>
<H><B><T>text-i-have-to-update</T></B></H>
<H><C><T>text-i-have-to-update</T></C></H>
</root>"""
doc = ET.fromstring(data)
for item in doc.findall('.//H//T'):
item.text = "modified text"
print(ET.tostring(doc).decode())
Output:
<root>
<H><A><T>modified text</T></A></H>
<H><B><T>modified text</T></B></H>
<H><C><T>modified text</T></C></H>
</root>

Parsing and extracting field values from XML files

I have a couple of GB of log files in the XML format. What I am interested in is finding the rows with a specific command and extract the user that ordered the command.
Which is to say I want to check a particular field in all rows for a specific value and then extract an unknown value from another field on the same line. How do I go about doing that? (I've tried turning to documentation and other sources without understanding how it works.)
I currently use Python 2.7.15, but if 3.* is better or easier in any way I'll use that.
Here's an example of a row in a logfile that I'm interested in:
<?xml version="1.0" encoding="UTF-8"?>
<IHEYr4>
<UserAuthenticated>
<LocalUsername>User1</LocalUsername>
<Action>Login</Action>
</UserAuthenticated>
<Host>192.168.1.15</Host>
<TimeStamp>2018-01-18T02:31:00</TimeStamp>
</IHEYr4>

Using ElementTree
Demo:
x = """<?xml version="1.0" encoding="UTF-8"?>
<IHEYr4>
<UserAuthenticated>
<LocalUsername>User1</LocalUsername>
<Action>Login</Action>
</UserAuthenticated>
<Host>192.168.1.15</Host>
<TimeStamp>2018-01-18T02:31:00</TimeStamp>
</IHEYr4>
"""
import xml.etree.ElementTree as ET
xmlVal = ET.fromstring(x)
if xmlVal.find("UserAuthenticated/Action").text == 'Login':
print(xmlVal.find("Host").text, xmlVal.find("TimeStamp").text)
Output:
('192.168.1.15', '2018-01-18T02:31:00')

Grab Content from XML using Python? almost there

I'm using ElementTree and I can get tags and attributes but not that actual content between elements.
from this XML:
<tag_name attrib="1">I WANT THIS INFO HERE</tag_name>
here's my python code:
import urllib2
import xml.etree.ElementTree as ET
XML = urllib2.urlopen("http://URL/file.xml")
Tree = ET.parse(XML)
for node in Tree.getiterator():
print node.tag, node.attrib
This prints most of the XML file, and I understand what 'tag' and 'attrib' are, but how do I get the 'Content'? I tried looking through ElementTree's docs, but I think this might be too basic of a question.

.text method should give you the required text value.
for node in Tree.getiterator():
print node.tag, node.attrib, node.text

Did you try XPath ?
There are a lot of libraries to extract content from tags with a very easy yet powerful syntax.
Here an example:
import XmlXPathSelector
xs = XmlXPathSelector(text="<tags>your xml</tags>")
print xs.select("//tag_name[#attrib='1']/text()").extract()

Python minidom: How to access an element

I'm working on parsing an XML-Sheet in Python. The XML has a structure like this:
<layer1>
<layer2>
<element>
<info1></info1>
</element>
<element>
<info1></info1>
</element>
<element>
<info1></info1>
</element>
</layer2>
</layer1>
Without layer2, I have no problems to acess the data in info1. But with layer2, I'm really in trouble. Their I can adress info1 with: root.firstChild.childNodes[0].childNodes[0].data
So my thought was, that I can do it similiar like this:root.firstChild.firstChild.childNodes[0].childNodes[0].data
########## Solution
So this is how I solved my problem:
from xml.etree import cElementTree as ET
from xml.etree import cElementTree as ET
tree = ET.parse("test.xml")
root = tree.getroot()
for elem in root.findall('./layer2/'):
for node in elem.findall('element/'):
x = node.find('info1').text
if x != "abc":
elem.remove(node)

Don't use the minidom API if you can help it. Use the ElementTree API instead; the xml.dom.minidom documentation explicitly states that:
Users who are not already proficient with the DOM should consider using the xml.etree.ElementTree module for their XML processing instead.
Here is a short sample that uses the ElementTree API to access your elements:
from xml.etree import ElementTree as ET
tree = ET.parse('inputfile.xml')
for info in tree.findall('.//element/info1'):
print info.text
This uses an XPath expression to list all info1 elements that are contained inside a element element, regardless of their position in the overall XML document.
If all you need is the first info1 element, use .find():
print tree.find('.//info1').text
With the DOM API, .firstChild could easily be a Text node instead of an Element node; you always need to loop over the .childNotes sequence to find the first Element match:
def findFirstElement(node):
for child in node.childNodes:
if child.nodeType == node.ELEMENT_NODE:
return child
but for your case, perhaps using .getElementsByTagName() suffices:
root.getElementsByTagName('info1').data

does this work? (im not amazing at python just a quick thought)
name[0].firstChild.nodeValue