Separate xml files removing tags (CRUDE)

sep_xml.py

import xml.etree.ElementTree as ET
tree = ET.parse('xmlsdev.xml')
root = tree.getroot()

with open('corrected', 'w', encoding='utf-8') as file:
    i = 0
    for sentence in root.iter('sentence'):
        for child in sentence.findall('del'):
            tail = child.tail
            child.clear()
            child.tail = tail

        file.write("".join(sentence.itertext()))
        file.write('\n')

        if i%100 == 0:
            print(i)
        i += 1