io.UnsupportedOperation when running from CLI

[pushfoo]

Overview

Converting RST from the CLI breaks if run as follows:

python -m readme_renderer ~/src/python-benedict/README.rst

Python versions tried: 3.9, 3.10, 3.12

Environment Info

Software	Version / Comments
OS	Debian 11
Python 3.9	System default
Python 3.11	Built from source
Python 3.12	Built from source

Replication Steps

1. Install from source or pip install readme_renderer
2. python -m readme_renderer README.rst per the --help instructions
3. Observe the following (3.12 output below, exact formatting varies):

   <string>:297: (WARNING/2) Inline literal start-string without end-string.
   Traceback (most recent call last):
    File "<frozen runpy>", line 198, in _run_module_as_main
    File "<frozen runpy>", line 88, in _run_code
    File "/home/user/src/readme_renderer/readme_renderer/__main__.py", line 62, in <module>
      main()
    File "/home/user/src/readme_renderer/readme_renderer/__main__.py", line 50, in main
      rendered = render_rst(source, stream=sys.stderr)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    File "/home/user/src/readme_renderer/readme_renderer/rst.py", line 133, in render
      if not stream.tell():
             ^^^^^^^^^^^^^
   io.UnsupportedOperation: underlying stream is not seekable

[miketheman]

I cannot reproduce this issue. Can you provide the RST source that is causing this error?

[miketheman]

Closing due to lack of response.