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asyncio REPL fails to run with TERM=dumb or PYTHON_BASIC_REPL in 3.13.0b2 #120842

Closed as not planned
Closed as not planned
asyncio REPL fails to run with TERM=dumb or PYTHON_BASIC_REPL in 3.13.0b2#120842
Assignees
Zheaoli
Labels
topic-asynciotopic-replRelated to the interactive shelltype-bugAn unexpected behavior, bug, or error

Description

@byllyfish
byllyfish
opened on Jun 21, 2024

Bug report

Bug description:

Similar bug report: #119102

Linux: Starting asyncio REPL using TERM=dumb:

$ TERM=dumb python -m asyncio
asyncio REPL 3.13.0b2 (main, Jun 13 2024, 04:41:44) [GCC 12.2.0] on linux
Use "await" directly instead of "asyncio.run()".
Type "help", "copyright", "credits" or "license" for more information.
>>> import asyncio
Exception in thread Interactive thread:
exiting asyncio REPL...
Exception ignored in atexit callback <function register_readline.<locals>.write_history at 0x7f8eed3b93a0>:
Traceback (most recent call last):
  File "<frozen site>", line 538, in write_history
  File "/usr/local/lib/python3.13/_pyrepl/readline.py", line 435, in write_history_file
Traceback (most recent call last):
    history = self.get_reader().get_trimmed_history(maxlength)
  File "/usr/local/lib/python3.13/_pyrepl/readline.py", line 349, in get_reader
  File "/usr/local/lib/python3.13/asyncio/__main__.py", line 117, in run
    raise RuntimeError(err)
RuntimeError: terminal doesn't have the required clear capability
    console = Console(self.f_in, self.f_out, encoding=ENCODING)
  File "/usr/local/lib/python3.13/_pyrepl/unix_console.py", line 172, in __init__

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.13/threading.py", line 1039, in _bootstrap_inner
    self.run()
    ~~~~~~~~^^
  File "/usr/local/lib/python3.13/asyncio/__main__.py", line 119, in run
    console.interact(banner="", exitmsg=exit_message)
                                        ^^^^^^^^^^^^
NameError: name 'exit_message' is not defined
    self._clear = _my_getstr("clear")
  File "/usr/local/lib/python3.13/_pyrepl/unix_console.py", line 165, in _my_getstr
    raise InvalidTerminal(
_pyrepl.unix_console.InvalidTerminal: terminal doesn't have the required clear capability

Linux: Using PYTHON_BASIC_REPL=1:

$ PYTHON_BASIC_REPL=1 python -m asyncio
asyncio REPL 3.13.0b2 (main, Jun 13 2024, 04:41:44) [GCC 12.2.0] on linux
Use "await" directly instead of "asyncio.run()".
Type "help", "copyright", "credits" or "license" for more information.
>>> import asyncio
Exception in thread Interactive thread:
exiting asyncio REPL...

CPython versions tested on:

3.13

Operating systems tested on:

Linux, macOS

Activity

  1. byllyfish
    added
    type-bugAn unexpected behavior, bug, or error
    on Jun 21, 2024

  2. Zheaoli commented on Jun 21, 2024

    @Zheaoli
    Zheaoli
    on Jun 21, 2024
    Contributor

    Confirm on main branch and 3.13

    Plz assign this to me, I will dive into this issue. BTW we need asyncio and repl related labels cc @Eclips4

  3. Eclips4
    added
    topic-asyncio
    topic-replRelated to the interactive shell
    on Jun 21, 2024
  4. github-project-automation
    added this to asyncioon Jun 21, 2024
  5. github-project-automation
    moved this to Todo in asyncioon Jun 21, 2024
  6. Eclips4
    assigned
    Zheaoli
    on Jun 21, 2024

  7. Zheaoli commented on Jul 6, 2024

    @Zheaoli
    Zheaoli
    on Jul 6, 2024
    Contributor

    @ambv this Bug was introduced into codebase since #119433 and was made by two part

    1. https://github.com/python/cpython/pull/119433/files#diff-7dde21a2106757650c70cf16ab62c5c40a63bec89e420d70ae12782c95e1daa8R119 we should convert exit_message to ''
    2. An InvalidTerminal has been raised in register_readline. Actually I'm not sure which is the graceful way to fix it.

  8. Eclips4 commented on Jul 6, 2024

    @Eclips4
    Eclips4
    on Jul 6, 2024
    Member
    1. https://github.com/python/cpython/pull/119433/files#diff-7dde21a2106757650c70cf16ab62c5c40a63bec89e420d70ae12782c95e1daa8R119 we should convert exit_message to ''

    We already have a PR to fix that: #121341

  9. Zheaoli commented on Jul 6, 2024

    @Zheaoli
    Zheaoli
    on Jul 6, 2024
    Contributor
    1. https://github.com/python/cpython/pull/119433/files#diff-7dde21a2106757650c70cf16ab62c5c40a63bec89e420d70ae12782c95e1daa8R119 we should convert exit_message to ''

    We already have a PR to fix that: #121341

    Yes but this is only for case1

    asyncio REPL 3.14.0a0 (heads/main:6239d41527, Jul  6 2024, 20:42:50) [GCC 14.1.1 20240522] on linux
Use "await" directly instead of "asyncio.run()".
Type "help", "copyright", "credits" or "license" for more information.
>>> import asyncio
>>>
exiting asyncio REPL...
Exception ignored in atexit callback <function register_readline.<locals>.write_history at 0x7ce232fa9850>:
Traceback (most recent call last):
  File "/home/manjusaka/Documents/projects/cpython/Lib/site.py", line 537, in write_history
    _pyrepl.readline.write_history_file(history)
  File "/home/manjusaka/Documents/projects/cpython/Lib/_pyrepl/readline.py", line 444, in write_history_file
    history = self.get_reader().get_trimmed_history(maxlength)
  File "/home/manjusaka/Documents/projects/cpython/Lib/_pyrepl/readline.py", line 358, in get_reader
    console = Console(self.f_in, self.f_out, encoding=ENCODING)
  File "/home/manjusaka/Documents/projects/cpython/Lib/_pyrepl/unix_console.py", line 173, in __init__
    self._clear = _my_getstr("clear")
  File "/home/manjusaka/Documents/projects/cpython/Lib/_pyrepl/unix_console.py", line 166, in _my_getstr
    raise InvalidTerminal(
_pyrepl.unix_console.InvalidTerminal: terminal doesn't have the required clear capability

    Here's case2. This exception should not be raised into terminal I guess

  10. kumaraditya303 commented on May 16, 2025

    @kumaraditya303
    kumaraditya303
    on May 16, 2025
    Contributor

    I think this is fixed on current main now.

  11. kumaraditya303
    closed this as not plannedon May 19, 2025
  12. github-project-automation
    moved this from Todo to Done in asyncioon May 19, 2025
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topic-asynciotopic-replRelated to the interactive shelltype-bugAn unexpected behavior, bug, or error

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