Ho to parse xml file to xlsx in python

Question

I have a file xml like this (input):

> <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
> <obs id="0">
> <dim name="Column1" value="a"/>
> <dim name="Column2" value="b"/>
> </obs>
> <obs id="1">
> <dim name="Column1" value="tr"/>
> <dim name="Column2" value="yu"/>
> </obs>

How can i do for parse in xlsx file?
i would like to have a xlsx file like this:

Column1|Column2
a |b
tr |yu

Column1	Column2
a	b
tr	yu

Thanks a lot.
I’ve tried with other xml parser but i did not realised the solution.

Asked By: Marco Marcellino

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Source

Answer 1

You can use BeautifulSoup to parse the XML document + pandas to save the dataframe to CSV and/or Excel format:

import pandas as pd
from bs4 import BeautifulSoup


with open("your_file.xml", "r") as f_in:
    soup = BeautifulSoup(f_in.read(), "html.parser")  # <-- you can ignore the warning or use different parser, such as `xml`

all_data = []
for obs in soup.select("obs"):
    d = {}
    for dim in obs.select("dim[name][value]"):
        d[dim["name"]] = dim["value"]

    all_data.append(d)

df = pd.DataFrame(all_data)
print(df)

df.to_csv('data.csv', index=False)

This prints:

  Column1 Column2
0       a       b
1      tr      yu

and saves data.csv.

Input file was:

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<obs id="0">
<dim name="Column1" value="a" />
<dim name="Column2" value="b" />
</obs>
<obs id="1">
<dim name="Column1" value="tr" />
<dim name="Column2" value="yu" />
</obs>

Answered By: Andrej Kesely

Answer 2

You need a well formed XML with only one root element, like:

<?xml version="1.0" encoding="utf-8" standalone="yes"?>
<root>
  <obs id="0">
    <dim name="Column1" value="a"/>
    <dim name="Column2" value="b"/>
  </obs>
  <obs id="1">
    <dim name="Column1" value="tr"/>
    <dim name="Column2" value="yu"/>
  </obs>
</root>

You can parse this xml to columns and rows for a pandas DataFrame and write this df to a Excel sheet with pandas ExcelWriter():

import xml.etree.ElementTree as ET
import pandas as pd
import openpyxl

tree = ET.parse('Excel.xml')
root = tree.getroot()

columns = []
data = []
for elem in root.iter('dim'):
    if elem.get('name') not in columns:
        columns.append(elem.get('name'))
    if elem.get('name') == "Column1":
        c1 = elem.get('value')
    else:
        c2 = elem.get('value')
        row = (c1, c2)
        data.append(row)

df = pd.DataFrame(data, columns=columns)
print(df)

with pd.ExcelWriter("Excel.xlsx") as writer:
    df.to_excel(writer)

Result:

Answered By: Hermann12

Ho to parse xml file to xlsx in python

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