lxml.etree.SerialisationError: IO_ENCODER

[wbvguo]

Traceback (most recent call last): File "gitbook.py", line 5, in Gitbook2PDF(url).run() File "/mnt/c/Apps/Ubuntu/code/gitbook2pdf/gitbook2pdf/gitbook2pdf.py", line 198, in run loop.run_until_complete(self.crawl_main_content(content_urls)) File "/mnt/c/Apps/Ubuntu/apps/anaconda3/lib/python3.8/asyncio/base_events.py", line 616, in run_until_complete return future.result() File "/mnt/c/Apps/Ubuntu/code/gitbook2pdf/gitbook2pdf/gitbook2pdf.py", line 220, in crawl_main_content await asyncio.gather(*tasks) File "/mnt/c/Apps/Ubuntu/code/gitbook2pdf/gitbook2pdf/gitbook2pdf.py", line 241, in gettext text = ChapterParser(metatext, title, level, ).parser() File "/mnt/c/Apps/Ubuntu/code/gitbook2pdf/gitbook2pdf/gitbook2pdf.py", line 105, in parser return html.unescape(ET.tostring(context).decode()) File "src/lxml/etree.pyx", line 3437, in lxml.etree.tostring File "src/lxml/serializer.pxi", line 139, in lxml.etree._tostring File "src/lxml/serializer.pxi", line 199, in lxml.etree._raiseSerialisationError lxml.etree.SerialisationError: IO_ENCODER

Besides, may I ask if you have plan to add some feature like save html to PDFs, this feature might make life easier.

[FloodLin]

I have the same problem.

retrying : https://www.math.pku.edu.cn/teachers/lidf/docs/Rbook/html/_Rbook/prog-io.html Traceback (most recent call last): File "gitbook.py", line 5, in Gitbook2PDF(url).run() File "/home/flood/soft/gitbook2pdf/gitbook2pdf/gitbook2pdf.py", line 198, in run loop.run_until_complete(self.crawl_main_content(content_urls)) File "/usr/lib/python3.8/asyncio/base_events.py", line 616, in run_until_complete return future.result() File "/home/flood/soft/gitbook2pdf/gitbook2pdf/gitbook2pdf.py", line 220, in crawl_main_content await asyncio.gather(*tasks) File "/home/flood/soft/gitbook2pdf/gitbook2pdf/gitbook2pdf.py", line 241, in gettext text = ChapterParser(metatext, title, level, ).parser() File "/home/flood/soft/gitbook2pdf/gitbook2pdf/gitbook2pdf.py", line 105, in parser return html.unescape(ET.tostring(context).decode()) File "src/lxml/etree.pyx", line 3437, in lxml.etree.tostring File "src/lxml/serializer.pxi", line 139, in lxml.etree._tostring File "src/lxml/serializer.pxi", line 199, in lxml.etree._raiseSerialisationError lxml.etree.SerialisationError: IO_ENCODER

[acheng-floyd]

reinstall lxml package could resolve this problem，in my case on centos7 , i use lxml4.2 pip3.7 uninstall lxml && pip3.7 install lxml==4.2