Subject: bug#25025: python-shell-calculate-command is wrong

From: Andreas Röhler <[email-masked]>
Date: Mon, 28 Nov 2016 09:42:16 +0100

On 27.11.2016 17:12, Eli Zaretskii wrote:
>> From: [email-masked]
>> Cc: [email-masked],  [email-masked]
>> Date: Sun, 27 Nov 2016 11:06:03 -0500
>>
>>> Why does it need to be split?  A shell command can (even should) be
>>> handed to the shell as a single string.
>> Currently it's not a shell command, because a shell isn't being used.
>> My other suggestion was to use a shell:
>>
>>>> It might be more intuitive to actually use a shell and then the user
>>>> would enter a shell command (though inserting a shell into things
>>>> might bring more complications).
> If it doesn't use a shell, then it has no business quoting commands or
> their parts using shell-related APIs.
>
> So yes, I think using a shell would be TRT here.  Can someone please
> work on a patch in that direction?  This problem exists for a long
> time, so I hope we could solve it soon.
>
>
>

Executing Python code via a shell might produce subtle bugs. See 
https://bugs.launchpad.net/python-mode/+bug/550661

Following the OP's suggestion seems reasonable. Just drop it at place 
and see if something gets broken - wouldn't expect it.