unable to resolve readline issues

[bigle...@gmail.com]

Dear Sir:



For whatever reason I have lost functionality of using Python 3.11. While
opening Python (standalone or from CMD prompt) as usual this AM the
following message appeared. Did read that it is not compatible with
Windows but I can't get it to work as I don't know what module will load.



Python 3.11.0 (main, Oct 24 2022, 18:26:48) [MSC v.1933 64 bit (AMD64)] on
win32

Type "help", "copyright", "credits" or "license" for more information.

Failed calling sys.__interactivehook__

Traceback (most recent call last):

File "<frozen site>", line 445, in register_readline

File
"C:\Users\bigle\AppData\Local\Programs\Python\Python311\Lib\site-packages\re
adline.py", line 34, in <module>

rl = Readline()

^^^^^^^^^^

File
"C:\Users\bigle\AppData\Local\Programs\Python\Python311\Lib\site-packages\py
readline\rlmain.py", line 422, in __init__

BaseReadline.__init__(self)

File
"C:\Users\bigle\AppData\Local\Programs\Python\Python311\Lib\site-packages\py
readline\rlmain.py", line 62, in __init__

mode.init_editing_mode(None)

File
"C:\Users\bigle\AppData\Local\Programs\Python\Python311\Lib\site-packages\py
readline\modes\emacs.py", line 633, in init_editing_mode

self._bind_key('space', self.self_insert)

File
"C:\Users\bigle\AppData\Local\Programs\Python\Python311\Lib\site-packages\py
readline\modes\basemode.py", line 162, in _bind_key

if not callable(func):

^^^^^^^^^^^^^^

File
"C:\Users\bigle\AppData\Local\Programs\Python\Python311\Lib\site-packages\py
readline\py3k_compat.py", line 8, in callable

return isinstance(x, collections.Callable)rer

^^^^^^^^^^^^^^^^^^^^

AttributeError: module 'collections' has no attribute 'Callable'



>From this point on Python became unusable as I uninstalled rebooted then
reinstalled to find I have the same issues as stated. Finally uninstalled
Python as it doesn't perform as usual especially trying to understand the
use of pyreadline, gnureadline and or just readline.



If you can help great.



Regards,

Leon Pearlman

[Eryk Sun]

On 12/2/22, bigle...@gmail.com <bigle...@gmail.com> wrote:
>
> From this point on Python became unusable as I uninstalled rebooted then
> reinstalled to find I have the same issues as stated. Finally uninstalled
> Python as it doesn't perform as usual especially trying to understand the
> use of pyreadline, gnureadline and or just readline.

When Python runs interactively, it implicitly tries to import the
readline module. On POSIX, Python has a builtin readline module that
usually uses the GNU Readline library.

On Windows, Python does not include a readline module. Instead, if
standard I/O is a console, the high-level WinAPI ReadConsoleW()
function is used, which implements its own line editor and
command-line history. It's not as general, flexible, or capable as the
readline interface, so a third-party pyreadline package was
implemented for Windows. However, as far as I know, pyreadline is no
longer actively developed. Thus it has out-of-date code, which may be
broken in newer releases of Python, such as isinstance(x,
collections.Callable).

Your choice is to either patch pyreadline to fix the bug or uninstall it.

[MRAB]

On 2022-12-02 22:38, bigle...@gmail.com wrote:
> Dear Sir:
>
> For whatever reason I have lost functionality of using Python 3.11.
While
> opening Python (standalone or from CMD prompt) as usual this AM the
> following message appeared. Did read that it is not compatible with
> Windows but I can't get it to work as I don't know what module will load.
>
> Python 3.11.0 (main, Oct 24 2022, 18:26:48) [MSC v.1933 64 bit
(AMD64)] on
> win32
> Type "help", "copyright", "credits" or "license" for more information.
> Failed calling sys.__interactivehook__
> Traceback (most recent call last):
> File "<frozen site>", line 445, in register_readline
> File

"C:\Users\bigle\AppData\Local\Programs\Python\Python311\Lib\site-packages\readline.py",

line 34, in <module>
> rl = Readline()
> ^^^^^^^^^^
> File

"C:\Users\bigle\AppData\Local\Programs\Python\Python311\Lib\site-packages\pyreadline\rlmain.py",

line 422, in __init__
> BaseReadline.__init__(self)
> File

"C:\Users\bigle\AppData\Local\Programs\Python\Python311\Lib\site-packages\pyreadline\rlmain.py",

line 62, in __init__
> mode.init_editing_mode(None)
> File

"C:\Users\bigle\AppData\Local\Programs\Python\Python311\Lib\site-packages\pyreadline\modes\emacs.py",

line 633, in init_editing_mode
> self._bind_key('space', self.self_insert)
> File

"C:\Users\bigle\AppData\Local\Programs\Python\Python311\Lib\site-packages\pyreadline\modes\basemode.py",

line 162, in _bind_key
> if not callable(func):
> ^^^^^^^^^^^^^^
> File

"C:\Users\bigle\AppData\Local\Programs\Python\Python311\Lib\site-packages\pyreadline\py3k_compat.py",

line 8, in callable
> return isinstance(x, collections.Callable)rer
> ^^^^^^^^^^^^^^^^^^^^
> AttributeError: module 'collections' has no attribute 'Callable'
>

> From this point on Python became unusable as I uninstalled rebooted
then
> reinstalled to find I have the same issues as stated. Finally
uninstalled
> Python as it doesn't perform as usual especially trying to understand the
> use of pyreadline, gnureadline and or just readline.
>

> If you can help great.
>
> Regards,
> Leon Pearlman
>

Looking at PyPI, it appears that it was last supported on Python 3.5.

I'd suggest that after uninstalling Python, you delete the Python folder
if it's still there (because of any installed 3rd-party modules) before
re-installing.

[Sabrina Almodóvar]

(*) How to patch it

Open the file

Lib/site-packages/pyreadline/py3k_compat.py

and locate the procedure

def callable(x):
return isinstance(x, collections.Callable)

Change it to

def callable(x):
return isinstance(x, collections.abc.Callable)

You're done.

[Mats Wichmann]

On 12/4/22 13:08, Eryk Sun wrote:
> On 12/2/22, bigle...@gmail.com <bigle...@gmail.com> wrote:
>>
>> From this point on Python became unusable as I uninstalled rebooted then
>> reinstalled to find I have the same issues as stated. Finally uninstalled
>> Python as it doesn't perform as usual especially trying to understand the
>> use of pyreadline, gnureadline and or just readline.
>
> When Python runs interactively, it implicitly tries to import the
> readline module. On POSIX, Python has a builtin readline module that
> usually uses the GNU Readline library.
>
> On Windows, Python does not include a readline module. Instead, if
> standard I/O is a console, the high-level WinAPI ReadConsoleW()
> function is used, which implements its own line editor and
> command-line history. It's not as general, flexible, or capable as the
> readline interface, so a third-party pyreadline package was
> implemented for Windows. However, as far as I know, pyreadline is no
> longer actively developed. Thus it has out-of-date code, which may be
> broken in newer releases of Python, such as isinstance(x,
> collections.Callable).
>
> Your choice is to either patch pyreadline to fix the bug or uninstall it.

there is a pyreadline3

I tried it for a particular case and didn't have a whole lot of luck
with it, so YMMV, but somebody has done the porting work to keep it more
current.