GNU bug report logs - #50669
28.0.50; python-shell-send-string leads to "nesting exceeds `max-lisp-eval-depth`" error

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From: Michael-David Fiszer <sguibor <at> gmail.com>
To: 50669 <at> debbugs.gnu.org
Subject: bug#50669: 28.0.50; python-shell-send-string leads to "nesting exceeds `max-lisp-eval-depth`" error
Date: Sun, 19 Sep 2021 03:32:30 +0300

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Hi,

I'm not an expert in how python.el internals work, but I started getting
this error every time I would send a statement to the shell. In addition I
would get these weird printouts of blocks of the form

```
  def __PYDOC_get_help(obj):
    try:
        import inspect
        try:
            str_type = basestring
            argspec_function = inspect.getargspec
        except NameError:
            str_type = str
```

while just moving the point in my .py file.

My current workaround was to simply override python-shell-send-string from
28.0.50 with the one I had with my emacs 27 version, which was:

```
(defun python-shell-send-string (string &optional process msg)
  "Send STRING to inferior Python PROCESS.
When optional argument MSG is non-nil, forces display of a
user-friendly message if there's no process running; defaults to
t when called interactively."
  (interactive
   (list (read-string "Python command: ") nil t))
  (let ((process (or process (python-shell-get-process-or-error msg))))
    (if (string-match ".\n+." string)   ;Multiline.
        (let* ((temp-file-name (python-shell--save-temp-file string))
               (file-name (or (buffer-file-name) temp-file-name)))
          (python-shell-send-file file-name process temp-file-name t))
      (when (or (not (string-match "\n\\'" string))
                (string-match "\n[ \t].*\n?\\'" string))
        (comint-send-string process "\n")))))
```

And this seems to solve the problem...


In GNU Emacs 28.0.50 (build 1, x86_64-apple-darwin20.6.0, NS appkit-2022.60
Version 11.6 (Build 20G165))
 of 2021-09-17 built on mdfz-macbookpro4.roam.corp.google.com
Windowing system distributor 'Apple', version 10.3.2022
System Description:  macOS 11.6

Configured using:
 'configure --disable-dependency-tracking --disable-silent-rules
 --enable-locallisppath=/usr/local/share/emacs/site-lisp
 --infodir=/usr/local/Cellar/emacs-plus <at> 28/28.0.50/share/info/emacs
 --prefix=/usr/local/Cellar/emacs-plus <at> 28/28.0.50 --with-xml2 --with-gnutls
 --without-dbus --with-imagemagick --with-modules --with-rsvg --with-ns
 --disable-ns-self-contained'

Configured features:
ACL GLIB GMP GNUTLS IMAGEMAGICK JPEG JSON LCMS2 LIBXML2 MODULES NOTIFY
KQUEUE NS
PDUMPER PNG RSVG THREADS TIFF TOOLKIT_SCROLL_BARS XIM ZLIB

Important settings:
  value of $LC_ALL: en_US.UTF-8
  value of $LC_CTYPE: en_US.UTF-8
  value of $LANG: en_US.UTF-8
  locale-coding-system: utf-8-unix

Major mode: mu4e-headers

Memory information:
((conses 16 1905022 1639005)
 (symbols 48 123242 97)
 (strings 32 433582 151543)
 (string-bytes 1 14825386)
 (vectors 16 192606)
 (vector-slots 8 3165377 831342)
 (floats 8 1100 6586)
 (intervals 56 34684 19693)
 (buffers 992 60))

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