[docutils:bugs] #514 publish_file no longer works / crashes

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Thank you for the report.
The issue is fixed in [r10267].


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**[bugs:#514] publish_file no longer works / crashes**

**Status:** open
**Created:** Sat Nov 15, 2025 05:26 PM UTC by Kristian Lehto
**Last Updated:** Sun Nov 16, 2025 04:58 AM UTC
**Owner:** nobody


Hello,

We are using code bellow to convert rst files to html.

Code works fine if we use old docutils version 0.20.1.

python -m pip install docutils==0.20.1

But current 0.22.3 version crashes.

import io
from docutils.core import publish_file

text = open('test.rst', 'rb').read()
source = io.BytesIO(text)
destination = open('test.html', 'w')
publish_file(source=source, destination=destination, writer_name='html')
destination.close()
source.close()

Traceback (most recent call last):
  File "C:\projects\test\test.py", line 7, in <module>
    publish_file(source=source, destination=destination, writer_name='html')
    ~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Python314\Lib\site-packages\docutils\core.py", line 465, in publish_file
    output, _publisher = publish_programmatically(
                         ~~~~~~~~~~~~~~~~~~~~~~~~^
        source_class=io.FileInput, source=source, source_path=source_path,
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    ...<7 lines>...
        config_section=config_section,
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        enable_exit_status=enable_exit_status)
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Python314\Lib\site-packages\docutils\core.py", line 794, in publish_programmatically
    output = publisher.publish(enable_exit_status=enable_exit_status)
  File "C:\Python314\Lib\site-packages\docutils\core.py", line 269, in publish
    self.document = self.reader.read(self.source, self.parser,
                    ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^
                                     self.settings)
                                     ^^^^^^^^^^^^^^
  File "C:\Python314\Lib\site-packages\docutils\readers\__init__.py", line 95, in read
    self.parse()
    ~~~~~~~~~~^^
  File "C:\Python314\Lib\site-packages\docutils\readers\__init__.py", line 101, in parse
    self.parser.parse(self.input, document)
    ~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Python314\Lib\site-packages\docutils\parsers\rst\__init__.py", line 175, in parse
    inputlines = docutils.statemachine.string2lines(
          inputstring, tab_width=document.settings.tab_width,
          convert_whitespace=True)
  File "C:\Python314\Lib\site-packages\docutils\statemachine.py", line 1515, in string2lines
    astring = whitespace.sub(' ', astring)
TypeError: cannot use a string pattern on a bytes-like object


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<div class="markdown_content"><p>Thank you for the report.<br/>
The issue is fixed in <span>[r10267]</span>.</p>
<hr/>
<p><strong><a class="alink" href="https://sourceforge.net/p/docutils/bugs/514/">[bugs:#514]</a> publish_file no longer works / crashes</strong></p>
<p><strong>Status:</strong> open<br/>
<strong>Created:</strong> Sat Nov 15, 2025 05:26 PM UTC by Kristian Lehto<br/>
<strong>Last Updated:</strong> Sun Nov 16, 2025 04:58 AM UTC<br/>
<strong>Owner:</strong> nobody</p>
<p>Hello,</p>
<p>We are using code bellow to convert rst files to html.</p>
<p>Code works fine if we use old docutils version 0.20.1.</p>
<p>python -m pip install docutils==0.20.1</p>
<p>But current 0.22.3 version crashes.</p>
<p>import io<br/>
from docutils.core import publish_file</p>
<p>text = open('test.rst', 'rb').read()<br/>
source = io.BytesIO(text)<br/>
destination = open('test.html', 'w')<br/>
publish_file(source=source, destination=destination, writer_name='html')<br/>
destination.close()<br/>
source.close()</p>
<p>Traceback (most recent call last):<br/>
  File "C:\projects\test\test.py", line 7, in &lt;module&gt;<br/>
    publish_file(source=source, destination=destination, writer_name='html')<br/>
    ~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^<br/>
  File "C:\Python314\Lib\site-packages\docutils\core.py", line 465, in publish_file<br/>
    output, _publisher = publish_programmatically(<br/>
                         ~~~~~~~~~~~~~~~~~~~~~~~~^<br/>
        source_class=io.FileInput, source=source, source_path=source_path,<br/>
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^<br/>
    ...&lt;7 lines&gt;...<br/>
        config_section=config_section,<br/>
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^<br/>
        enable_exit_status=enable_exit_status)<br/>
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^<br/>
  File "C:\Python314\Lib\site-packages\docutils\core.py", line 794, in publish_programmatically<br/>
    output = publisher.publish(enable_exit_status=enable_exit_status)<br/>
  File "C:\Python314\Lib\site-packages\docutils\core.py", line 269, in publish<br/>
    self.document = self.reader.read(self.source, self.parser,<br/>
                    ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^<br/>
                                     self.settings)<br/>
                                     ^^^^^^^^^^^^^^<br/>
  File "C:\Python314\Lib\site-packages\docutils\readers__init__.py", line 95, in read<br/>
    self.parse()<br/>
    ~~~~~~~~~~^^<br/>
  File "C:\Python314\Lib\site-packages\docutils\readers__init__.py", line 101, in parse<br/>
    self.parser.parse(self.input, document)<br/>
    ~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^<br/>
  File "C:\Python314\Lib\site-packages\docutils\parsers\rst__init__.py", line 175, in parse<br/>
    inputlines = docutils.statemachine.string2lines(<br/>
          inputstring, tab_width=document.settings.tab_width,<br/>
          convert_whitespace=True)<br/>
  File "C:\Python314\Lib\site-packages\docutils\statemachine.py", line 1515, in string2lines<br/>
    astring = whitespace.sub(' ', astring)<br/>
TypeError: cannot use a string pattern on a bytes-like object&lt;/module&gt;</p>
<hr/>
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