How to remove xml header in beautifulsoup?

问题

I have imported and modified some xml, but when I write out my xml using test.prettify(). It changes the top line of the xml from

<?xml version="1.0"?>

to

<?xml version="1.0" encoding="utf-8"?>

I don't want this change. How can I just keep the first line unchanged? What is the easiest way to do this?

If it matters, I'm using the xml parser.

soup = BeautifulSoup(r.text,'xml')

回答1:

I'm sure there's a more elegant way to do this using BeautifulSoup's built-ins, but based on your comment, I'll give you the "strip it out" version:

xml_string = '<?xml version="1.0" encoding="utf-8"?>'
print xml_string[:xml_string.find("encoding")-1] + "?>"

This is general enough to strip out any encoding from the header (not just utf-8).

回答2:

You could find the xml and use replaceWith() to replace it with the value you want.

来源：https://stackoverflow.com/questions/36503875/how-to-remove-xml-header-in-beautifulsoup