Replace XML tag and write to the same file

[snippsat]

I helped before with ElementTree,but now i do not touch it.
As i have spend unnecessary time to fix stuff in ElementTree,that eg BS-4 or lxml do right.

from bs4 import BeautifulSoup

soup = BeautifulSoup(open('binary.xml', encoding='utf-8'), 'xml')
result = soup.find('identity')
result.string.replace_with('123456')
with open('out.xml', 'w', encoding='utf-8') as f:
    f.write(str(soup))

Now get a validat .xml file back where only wanted change is made.
if want file overwritten give same name when write binary.xml,that will also work.

Output:
<?xml version="1.0" encoding="utf-8"?>
<config version="v1">
<chain template="file-system">                            // Use the “”file-system” template
    <provider id="file-system" type="file-system">            // Modify the “file-system” binary provider
        <fileStoreDir>$FILESTORE/binaries</fileStoreDir>    // Override the <fileStoreDir> attribute
    </fileStoreDir>
<provider>
<identity>123456</identity>
<endpoint>some point.com</endpoint>
</provider>
</provider></chain></config>