I am having trouble parsing data in this manner for an XML file which is converted to a CSV:
For the first column, I would like to get the general name tag (recordingSystem, Ports, etc) and concatenate it with the subNames in the row tags (closedFileCount, processedFileCount, etc)
The tag where the subName is located keeps changing, it could be a “usage”, “lwGuage”, “hwGauge” and so on. I also need to collect those and put it in the column beside it.
Please see the sample XML below:
<?xml version="1.0" encoding="UTF-8"?>
<omGroups xmlns="urn:nortel:namespaces:mcp:oms" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="urn:nortel:namespaces:mcp:oms OMSchema.xsd" >
<group>
<name>RecordingSystem</name>
<row>
<package>com.nortelnetworks.mcp.ne.base.recsystem.fw.system</package>
<class>RecSysFileOMRow</class>
<usage name="closedFileCount" hasThresholds="true">
<measures>
closed file count
</measures>
<description>
This register counts the number
of closed files in the spool directory of a
particular stream and a particular system.
Files in the spool directory store the raw
OAM records where they are sent to the
Element Manager for formatting.
</description>
<notes>
Minor and major alarms
when the value of closedFileCount
exceeds certain thresholds. Configure
the threshold values for minor and major
alarms for this OM through engineering
parameters for minorBackLogCount and
majorBackLogCount, respectively. These
engineering parameters are grouped under
the parameter group of Log, OM, and
Accounting for the logs’ corresponding
system.
</notes>
</usage>
<usage name="processedFileCount" hasThresholds="true">
<measures>
Processed file count
</measures>
<description>
The register counts the number
of processed files in the spool directory of
a particular stream and a particular system.
Files in the spool directory store the raw
OAM records and then send the records to
the Element Manager for formatting.
</description>
</usage>
</row>
<documentation>
<description>
Rows of this OM group provide a count of the number of files contained
within the directory (which is the OM row key value).
</description>
<rowKey>
The full name of the directory containing the files counted by this row.
</rowKey>
</documentation>
<generatedOn>
<all/>
</generatedOn>
</group>
<group traffic="true">
<name>Ports</name>
<row>
<package>com.nortelnetworks.ims.cap.mediaportal.host</package>
<class>PortsOMRow</class>
<usage name="rtpMpPortUsage">
<measures>
BCP port usage
</measures>
<description>
Meter showing number of ports in use.
</description>
</usage>
<lwGauge name="connMapEntriesLWM">
<measures>
Lowest simultaneous port usage
</measures>
<description>
Lowest number of
simultaneous ports detected to be in
use during the collection interval
</description>
</lwGauge>
<hwGauge name="connMapEntriesHWM">
<measures>
Highest simultaneous port usage
</measures>
<description>
Highest number of
simultaneous ports detected to be in
use during the collection interval.
</description>
</hwGauge>
<waterMark name="connMapEntries">
<measures>
Connections map entries
</measures>
<description>
Meter showing the number of connections in the host
CPU connection map.
</description>
<bwg lwref="connMapEntriesLWM" hwref="connMapEntriesHWM"/>
</waterMark>
<counter name="portUsageSampleCnt">
<measures>
Usage sample count
</measures>
<description>
The number of 100-second samples taken during the
collection interval contributing to the average report.
</description>
</counter>
<counter name="sampledRtpMpPortUsage">
<measures>
In-use ports usage
</measures>
<description>
Provides the sum of the in-use ports every 100 seconds.
</description>
</counter>
<precollector>
<package>com.nortelnetworks.ims.cap.mediaportal.host</package>
<class>PortsOMCenturyPrecollector</class>
<collector>centurySecond</collector>
</precollector>
</row>
<documentation>
<description>
</description>
<rowKey>
</rowKey>
</documentation>
<generatedOn>
<list>
<ne>sessmgr</ne>
<ne>rtpportal</ne>
</list>
</generatedOn>
</group>
</omGroups>
The code below is supposed to get the GeneralName and display it in the csv file the correct number of times but I can not get it to display anything.
from xml.etree import ElementTree
import csv
from copy import copy
import lxml.etree
tree = ElementTree.parse('OM.xml')
sitescope_data = open('OMFileConverted.csv', 'w', newline='', encoding='utf-8')
csvwriter = csv.writer(sitescope_data)
#Create all needed columns here in order and writes them to excel file
col_names = ['name', 'OMRegister']
csvwriter.writerow(col_names)
def recurse(root, props):
for child in root:
if child.tag == '{urn:nortel:namespaces:mcp:oms}group':
p2 = copy(props)
for event in root.findall('{urn:nortel:namespaces:mcp:oms}group'):
event_id = event.find('{urn:nortel:namespaces:mcp:oms}name')
if event_id != None:
p2['name'] = event_id.text
recurse(child, p2)
else:
recurse(child, props)
for event in root.findall('{urn:nortel:namespaces:mcp:oms}group'):
event_data = [props.get('name')]
csvwriter.writerow(event_data)
root = tree.getroot()
recurse(root,{}) #root + empty dictionary
sitescope_data.close()
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Answer
If xml_string is your XML snippet from the question, then this script:
import csv
from bs4 import BeautifulSoup
soup = BeautifulSoup(xml_string, 'html.parser')
with open('data.csv', 'w', newline='') as f_out:
writer = csv.writer(f_out)
writer.writerow(['General name:SpecificName', 'RegisterType'])
for item in soup.select('row [name]'):
writer.writerow([item.find_previous('name').text + ':' + item['name'], item.name])
Produces data.csv (screenshot from LibreOffice):
Edit: To get measures tag into a column, you can do:
import csv
from bs4 import BeautifulSoup
soup = BeautifulSoup(xml_string, 'html.parser')
with open('data.csv', 'w', newline='') as f_out:
writer = csv.writer(f_out)
writer.writerow(['General name:SpecificName', 'RegisterType', 'Measures'])
for item in soup.select('row [name]'):
writer.writerow([item.find_previous('name').text + ':' + item['name'], item.name, item.find('measures').get_text(strip=True)])
Produces:
