Bug: Babel Tramp python [8.2.10 (release_8.2.10 @ /usr/share/emacs/25.3/lisp/org/)]

[emacswatcher@gmail.com]

Given emacs -Q with this file:

+++ test.org
#+TITLE:  Babel remote processing test
#+AUTHOR: jjh
#+EMAIL:  emacswatcher@gmail.com

* python

#+BEGIN_SRC python :dir /ssh:root@[some remote host]:
  import socket
  return ("Hostname is %s" % socket.gethostname())
#+END_SRC
--- test.org

and with python added to org-babel-language-list:

(setq org-babel-load-languages
 ((python . t)
  (sh . t)
  (emacs-lisp . t)))

executing the source block with a valid remote host returns in *Messsages*:

executing Python code block...
Tramp: Encoding local file ‘/tmp/tramp.1353PZN’ using ‘base64-encode-region’...done
Tramp: Decoding remote file ‘/ssh:root@[my remote host]:/tmp/python-1353CPH’ using ‘base64 -d -i >%s’...done
org-babel-local-file-name: Invalid function: with-parsed-tramp-file-name



n.b.:a similar sh source block remotely executed on the same host works
as expected.

Emacs  : GNU Emacs 25.3.1 (x86_64-redhat-linux-gnu, GTK+ Version 3.22.19)
 of 2017-09-14
Package: Org-mode version 8.2.10 (release_8.2.10 @ /usr/share/emacs/25.3/lisp/org/)

current state:
==============
(setq
 org-tab-first-hook '(org-hide-block-toggle-maybe org-src-native-tab-command-maybe
		      org-babel-hide-result-toggle-maybe org-babel-header-arg-expand)
 org-speed-command-hook '(org-speed-command-default-hook org-babel-speed-command-hook)
 org-occur-hook '(org-first-headline-recenter)
 org-metaup-hook '(org-babel-load-in-session-maybe)
 org-confirm-shell-link-function 'yes-or-no-p
 org-after-todo-state-change-hook '(org-clock-out-if-current)
 org-src-mode-hook '(org-src-babel-configure-edit-buffer org-src-mode-configure-edit-buffer)
 org-agenda-before-write-hook '(org-agenda-add-entry-text)
 org-babel-pre-tangle-hook '(save-buffer)
 org-mode-hook '(#[nil "\300\301\302\303\304$\207"
		   [org-add-hook change-major-mode-hook org-show-block-all append local] 5]
		 #[nil "\300\301\302\303\304$\207"
		   [org-add-hook change-major-mode-hook org-babel-show-result-all append local] 5]
		 org-babel-result-hide-spec org-babel-hide-all-hashes)
 org-ctrl-c-ctrl-c-hook '(org-babel-hash-at-point org-babel-execute-safely-maybe)
 org-cycle-hook '(org-cycle-hide-archived-subtrees org-cycle-hide-drawers org-cycle-hide-inline-tasks
		  org-cycle-show-empty-lines org-optimize-window-after-visibility-change)
 org-babel-tangle-lang-exts '(("python" . "py") ("emacs-lisp" . "el"))
 org-confirm-elisp-link-function 'yes-or-no-p
 org-metadown-hook '(org-babel-pop-to-session-maybe)
 org-babel-load-languages '((sh . t) (python . t) (emacs-lisp . t))
 org-clock-out-hook '(org-clock-remove-empty-clock-drawer)
 )