Got a Problem with generating a .SVG File with Python3 and ElementTree.
from xml.etree import ElementTree as et
doc = et.Element('svg', width='480', height='360', version='1.1', xmlns='http://www.w3.org/2000/svg')
#Doing things with et and doc
f = open('sample.svg', 'w')
f.write('<?xml version=\"1.0\" standalone=\"no\"?>\n')
f.write('<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.1//EN\"\n')
f.write('\"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd\">\n')
f.write(et.tostring(doc))
f.close()
The Function et.tostring(doc) generates the TypeError "write() argument must be str, not bytes". I don't understand that behavior, "et" should convert the ElementTree-Element into a string? It works in python2, but not in python3. What did i do wrong?
As it turns out, tostring, despite its name, really does return an object whose type is bytes.
Stranger things have happened. Anyway, here's the proof:
>>> from xml.etree.ElementTree import ElementTree, tostring
>>> import xml.etree.ElementTree as ET
>>> element = ET.fromstring("<a></a>")
>>> type(tostring(element))
<class 'bytes'>
Silly, isn't it?
Fortunately you can do this:
>>> type(tostring(element, encoding="unicode"))
<class 'str'>
Yes, we all thought the ridiculousness of bytes and that ancient, forty-plus-year-old-and-obsolete encoding called ascii was dead.
And don't get me started on the fact that they call "unicode" an encoding!!!!!!!!!!!
The output file should be in binary mode.
f = open('sample.svg', 'wb')
Try:
f.write(et.tostring(doc).decode(encoding))
Example:
f.write(et.tostring(doc).decode("utf-8"))