poetry displays very verbose "broken pipe traceback" if output is not fully read

[maxnoe]

• I am on the latest Poetry version.

• I have searched the issues of this repo and believe that this is not a duplicate.

• If an exception occurs when executing a command, I executed it again in debug mode (-vvv option).

• OS version and name: Manjaro

• Poetry version: 1.1.4

Issue

When not reading all output of poetry, e.g. like this:

poetry -v | head -n 1

poetry displays a very verbose broken pipe error:

Traceback (most recent call last):
  File "/home/maxnoe/.local/lib/python3.9/site-packages/clikit/console_application.py", line 131, in run
    status_code = command.handle(parsed_args, io)
  File "/home/maxnoe/.local/lib/python3.9/site-packages/clikit/api/command/command.py", line 120, in handle
    status_code = self._do_handle(args, io)
  File "/home/maxnoe/.local/lib/python3.9/site-packages/clikit/api/command/command.py", line 171, in _do_handle
    return getattr(handler, handler_method)(args, io, self)
  File "/home/maxnoe/.local/lib/python3.9/site-packages/cleo/commands/command.py", line 92, in wrap_handle
    return self.handle()
  File "/home/maxnoe/.local/lib/python3.9/site-packages/poetry/console/commands/show.py", line 256, in handle
    self.line(line)
  File "/home/maxnoe/.local/lib/python3.9/site-packages/cleo/commands/command.py", line 233, in line
    self._io.write_line(styled, verbosity)
  File "/home/maxnoe/.local/lib/python3.9/site-packages/cleo/io/io_mixin.py", line 65, in write_line
    super(IOMixin, self).write_line(string, flags)
  File "/home/maxnoe/.local/lib/python3.9/site-packages/clikit/api/io/io.py", line 66, in write_line
    self._output.write_line(string, flags=flags)
  File "/home/maxnoe/.local/lib/python3.9/site-packages/clikit/api/io/output.py", line 69, in write_line
    self.write(string, flags=flags, new_line=True)
  File "/home/maxnoe/.local/lib/python3.9/site-packages/clikit/api/io/output.py", line 61, in write
    self._stream.write(to_str(formatted))
  File "/home/maxnoe/.local/lib/python3.9/site-packages/clikit/io/output_stream/stream_output_stream.py", line 25, in write
    self._stream.flush()
BrokenPipeError: [Errno 32] Broken pipe

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/maxnoe/.local/bin/poetry", line 8, in <module>
    sys.exit(main())
  File "/home/maxnoe/.local/lib/python3.9/site-packages/poetry/console/__init__.py", line 5, in main
    return Application().run()
  File "/home/maxnoe/.local/lib/python3.9/site-packages/clikit/console_application.py", line 142, in run
    trace.render(io, simple=isinstance(e, CliKitException))
  File "/home/maxnoe/.local/lib/python3.9/site-packages/clikit/ui/components/exception_trace.py", line 232, in render
    return self._render_exception(io, self._exception)
  File "/home/maxnoe/.local/lib/python3.9/site-packages/clikit/ui/components/exception_trace.py", line 259, in _render_exception
    self._render_line(
  File "/home/maxnoe/.local/lib/python3.9/site-packages/clikit/ui/components/exception_trace.py", line 400, in _render_line
    io.write_line("")
  File "/home/maxnoe/.local/lib/python3.9/site-packages/cleo/io/io_mixin.py", line 65, in write_line
    super(IOMixin, self).write_line(string, flags)
  File "/home/maxnoe/.local/lib/python3.9/site-packages/clikit/api/io/io.py", line 66, in write_line
    self._output.write_line(string, flags=flags)
  File "/home/maxnoe/.local/lib/python3.9/site-packages/clikit/api/io/output.py", line 69, in write_line
    self.write(string, flags=flags, new_line=True)
  File "/home/maxnoe/.local/lib/python3.9/site-packages/clikit/api/io/output.py", line 61, in write
    self._stream.write(to_str(formatted))
  File "/home/maxnoe/.local/lib/python3.9/site-packages/clikit/io/output_stream/stream_output_stream.py", line 25, in write
    self._stream.flush()
BrokenPipeError: [Errno 32] Broken pipe
Exception ignored in: <_io.TextIOWrapper name='<stdout>' mode='w' encoding='utf-8'>
BrokenPipeError: [Errno 32] Broken pipe

[pierresouchay]

Yes, same issue here

[pierresouchay]

We also have a reallty weird behaviour regarding stdout:

$ poetry show|grep toml
toml           0.10.2 Python Library for Tom's Obvious, Minimal Language
tomlkit        0.7.1  Style preserving TOML library

But:

poetry show|grep -q toml
Traceback (most recent call last):
  File "<redacted>/lib/python3.9/site-packages/clikit/console_application.py", line 131, in run
    status_code = command.handle(parsed_args, io)
  File "<redacted>/lib/python3.9/site-packages/clikit/api/command/command.py", line 120, in handle
    status_code = self._do_handle(args, io)
  File "<redacted>/lib/python3.9/site-packages/clikit/api/command/command.py", line 171, in _do_handle
    return getattr(handler, handler_method)(args, io, self)
  File "<redacted>/lib/python3.9/site-packages/cleo/commands/command.py", line 92, in wrap_handle
    return self.handle()
  File "<redacted>/lib/python3.9/site-packages/poetry/console/commands/show.py", line 256, in handle
    self.line(line)
  File "<redacted>/lib/python3.9/site-packages/cleo/commands/command.py", line 233, in line
    self._io.write_line(styled, verbosity)
  File "<redacted>/lib/python3.9/site-packages/cleo/io/io_mixin.py", line 65, in write_line
    super(IOMixin, self).write_line(string, flags)
  File "<redacted>/lib/python3.9/site-packages/clikit/api/io/io.py", line 66, in write_line
    self._output.write_line(string, flags=flags)
  File "<redacted>/lib/python3.9/site-packages/clikit/api/io/output.py", line 69, in write_line
    self.write(string, flags=flags, new_line=True)
  File "<redacted>/lib/python3.9/site-packages/clikit/api/io/output.py", line 61, in write
    self._stream.write(to_str(formatted))
  File "<redacted>/lib/python3.9/site-packages/clikit/io/output_stream/stream_output_stream.py", line 25, in write
    self._stream.flush()
BrokenPipeError: [Errno 32] Broken pipe

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<redacted>/bin/poetry", line 8, in <module>
    sys.exit(main())
  File "<redacted>/lib/python3.9/site-packages/poetry/console/__init__.py", line 5, in main
    return Application().run()
  File "<redacted>/lib/python3.9/site-packages/clikit/console_application.py", line 142, in run
    trace.render(io, simple=isinstance(e, CliKitException))
  File "<redacted>/lib/python3.9/site-packages/clikit/ui/components/exception_trace.py", line 232, in render
    return self._render_exception(io, self._exception)
  File "<redacted>/lib/python3.9/site-packages/clikit/ui/components/exception_trace.py", line 259, in _render_exception
    self._render_line(
  File "<redacted>/lib/python3.9/site-packages/clikit/ui/components/exception_trace.py", line 400, in _render_line
    io.write_line("")
  File "<redacted>/lib/python3.9/site-packages/cleo/io/io_mixin.py", line 65, in write_line
    super(IOMixin, self).write_line(string, flags)
  File "<redacted>/lib/python3.9/site-packages/clikit/api/io/io.py", line 66, in write_line
    self._output.write_line(string, flags=flags)
  File "<redacted>/lib/python3.9/site-packages/clikit/api/io/output.py", line 69, in write_line
    self.write(string, flags=flags, new_line=True)
  File "<redacted>/lib/python3.9/site-packages/clikit/api/io/output.py", line 61, in write
    self._stream.write(to_str(formatted))
  File "<redacted>/lib/python3.9/site-packages/clikit/io/output_stream/stream_output_stream.py", line 25, in write
    self._stream.flush()
BrokenPipeError: [Errno 32] Broken pipe
Exception ignored in: <_io.TextIOWrapper name='<stdout>' mode='w' encoding='utf-8'>
BrokenPipeError: [Errno 32] Broken pipe

[asandeep]

+1

[abn]

I reckon this is more an issue in cleo/clikit rather than Poetry as the commands and IO are managed there. However if folks have workaround/mitigation , PRs welcome.

[github-actions]

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