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classification
Title: Updating Py_InspectFlag programmatically
Type: behavior Stage: patch review
Components: Interpreter Core Versions:
process
Status: open Resolution:
Dependencies: Superseder:
Assigned To: Nosy List: ishimoto
Priority: normal Keywords: patch

Created on 2019-03-02 06:10 by ishimoto, last changed 2022-04-11 14:59 by admin.

Pull Requests
URL Status Linked Edit
PR 12138 closed python-dev, 2019-03-02 06:19
Messages (1)
msg336993 - (view) Author: Atsuo Ishimoto (ishimoto) * Date: 2019-03-02 06:10
I sometime use a hack to start interactive console after running script.

.. code-block:: python

   import os

   os.environ['PYTHONINSPECT'] = 'x'
   print("Hello")

This hack works because ``PYTHONINSPECT`` is checked `here <https://github.com/python/cpython/blob/master/Modules/main.c#L738>`__ when exiting Python.

However, if the script uses ``sys.exit()`` to exit from Python, interactive console doen't apper because unhandled ``SystemExit`` exception leads ``exit()`` call to kill process, without checking ``PYTHONINSPECT``.

.. code-block:: python

   import os, sys

   os.environ['PYTHONINSPECT'] = 'x'
   print("Hello")

   sys.exit(1)  # Interactive console will not start


I think feature to allow updating ``Py_InspectFlag`` is useful, and this is a bugs to be fixed. However, setting environment variable to start console is not intuituve.

So instead of fixing bug, I would like to propose a small function to set ``Py_InspectFlag`` to start interactive console after running script.

.. code-block:: python

    sys.setinteractiveflag(bool)

Thoughts?
History
Date User Action Args
2022-04-11 14:59:11adminsetgithub: 80345
2019-03-02 06:19:38python-devsetkeywords: + patch
stage: patch review
pull_requests: + pull_request12140
2019-03-02 06:10:23ishimotocreate