Le lundi 04 février 2019 à 08:11 -0500, John Kitchin a écrit :
> The problem may be the name is only two characters long. Try Ahh
> instead. That works for me. 

Indeed. Nice catch ; how did you find this ?
Since this doesn't happen with emacs-lisp or Sage, and since nothing in
the docs I've read so far suggests anything about the length of a block
identifier, I consider this a bug in the Python language support code.
What do you think  ? Any hint ?
Thanks a lot !
--Emmanuel Charpentier
> John
> 
> -----------------------------------
> Professor John Kitchin 
> Doherty Hall A207F
> Department of Chemical Engineering
> Carnegie Mellon University
> Pittsburgh, PA 15213
> 412-268-7803
> @johnkitchin
> http://kitchingroup.cheme.cmu.edu
> 
> 
> 
> On Mon, Feb 4, 2019 at 7:00 AM Emmanuel Charpentier <
> emm.charpentier@free.fr> wrote:
> > Seen in `org-mode' version `9.2'.
> > 
> > 
> > 
> > Using `noweb' syntax works OK with `emacs-lisp':
> > 
> > 
> > 
> > ┌────
> > 
> > │ #+name: a
> > 
> > │ #+begin_src emacs-lisp
> > 
> > │   (setq L (append L (list i)))
> > 
> > │ #+end_src
> > 
> > │ 
> > 
> > │ #+name: b
> > 
> > │ #+begin_src emacs-lisp :noweb yes :exports both
> > 
> > │   ;; Lisp version
> > 
> > │   (setq L nil)
> > 
> > │   (dotimes (i 5) <<a>>)
> > 
> > │   L
> > 
> > │ #+end_src
> > 
> > └────
> > 
> > 
> > 
> > This gives :
> > 
> > 
> > 
> > ┌────
> > 
> > │ (setq L (append L (list i)))
> > 
> > └────
> > 
> > 
> > 
> > ┌────
> > 
> > │ ;; Lisp version
> > 
> > │ (setq L nil)
> > 
> > │ (dotimes (i 5) )
> > 
> > │ L
> > 
> > └────
> > 
> > 
> > 
> > The `noweb' syntax also works with `Sage' (a symbolic maths
> > oriented
> > 
> > Python derivative):
> > 
> > 
> > 
> > ┌────
> > 
> > │ #+name: Aaarghhh
> > 
> > │ #+begin_src sage
> > 
> > │   L.append(i)
> > 
> > │ #+end_src
> > 
> > │ 
> > 
> > │ #+name: Berde
> > 
> > │ #+begin_src sage :noweb yes :exports both
> > 
> > │   ## Python version
> > 
> > │   L=[]
> > 
> > │   for i in range(1,6):
> > 
> > │       <<Aaarghhh>>
> > 
> > │   L
> > 
> > │ #+end_src
> > 
> > └────
> > 
> > 
> > 
> > wich gives :
> > 
> > 
> > 
> > ┌────
> > 
> > │ L.append(i)
> > 
> > └────
> > 
> > 
> > 
> > ┌────
> > 
> > │ ## Sage version
> > 
> > │ L=[]
> > 
> > │ for i in range(1,6):
> > 
> > │ 
> > 
> > │ L
> > 
> > └────
> > 
> > 
> > 
> > But using the same syntax in Python fails miserably:
> > 
> > 
> > 
> > ┌────
> > 
> > │ #+name: Ah
> > 
> > │ #+begin_src python
> > 
> > │   L.append(i)
> > 
> > │ #+end_src
> > 
> > │ 
> > 
> > │ #+name: Beee
> > 
> > │ #+begin_src python :noweb yes :exports both
> > 
> > │   ## Python version
> > 
> > │   L=[]
> > 
> > │   for i in range(1,6):
> > 
> > │       <<Ah>>
> > 
> > │   L
> > 
> > │ #+end_src
> > 
> > └────
> > 
> > 
> > 
> > ┌────
> > 
> > │ L.append(i)
> > 
> > └────
> > 
> > 
> > 
> > ┌────
> > 
> > │ ## Python version
> > 
> > │ L=[]
> > 
> > │ for i in range(1,6):
> > 
> > │     <<Ah>>
> > 
> > │ L
> > 
> > └────
> > 
> > 
> > 
> > ┌────
> > 
> > │ []
> > 
> > └────
> > 
> > 
> > 
> > 
> > 
> > It *seems* that the "Ah" block is not expanded.
> > 
> > 
> > 
> > The code itself should be sound *if* it expanded:
> > 
> > 
> > 
> > ┌────
> > 
> > │ #+name: B0
> > 
> > │ #+begin_src python :exports both
> > 
> > │   L=[]
> > 
> > │   for i in range(1,6):
> > 
> > │       L.append(i)
> > 
> > │   L
> > 
> > │ #+end_src
> > 
> > └────
> > 
> > 
> > 
> > ┌────
> > 
> > │ L=[]
> > 
> > │ for i in range(1,6):
> > 
> > │     L.append(i)
> > 
> > │ L
> > 
> > └────
> > 
> > 
> > 
> > ━━━━━━━━━━━━━━━
> > 
> >  1  2  3  4  5 
> > 
> > ━━━━━━━━━━━━━━━
> > 
> > 
> > 
> > During the compilation of the source of this mail, the following is
> > 
> > printed in the `*Python*' buffer:
> > 
> > 
> > 
> > ┌────
> > 
> > │ >>> L.append(i)
> > 
> > │ >>> 
> > 
> > │ >>> open('/tmp/babel-OJSsxf/python-dVESY4', 'w').write(str(_))
> > 
> > │ >>> 
> > 
> > │ >>> 
> > 
> > │ >>> 'org_babel_python_eoe'
> > 
> > │ 'org_babel_python_eoe'
> > 
> > │ >>> ## Python version
> > 
> > │ ... L=[]
> > 
> > │ >>> for i in range(1,6):
> > 
> > │ ...     <<Ah>>
> > 
> > │   File "<stdin>", line 2
> > 
> > │     <<Ah>>
> > 
> > │      ^
> > 
> > │ SyntaxError: invalid syntax
> > 
> > │ >>> 
> > 
> > │ >>> L
> > 
> > │ []
> > 
> > │ >>> 
> > 
> > │ >>> open('/tmp/babel-OJSsxf/python-9NR46u', 'w').write(str(_))
> > 
> > │ >>> 
> > 
> > │ >>> 
> > 
> > │ >>> 'org_babel_python_eoe'
> > 
> > │ 'org_babel_python_eoe'
> > 
> > │ >>> L=[]
> > 
> > │ >>> for i in range(1,6):
> > 
> > │ ...     L.append(i)
> > 
> > │ ... 
> > 
> > │ >>> L
> > 
> > │ [1, 2, 3, 4, 5]
> > 
> > │ >>> 
> > 
> > │ >>> open('/tmp/babel-OJSsxf/python-fW5gK0', 'w').write(str(_))
> > 
> > │ >>> 
> > 
> > │ >>> 
> > 
> > │ >>> 'org_babel_python_eoe'
> > 
> > │ 'org_babel_python_eoe'
> > 
> > │ >>> 
> > 
> > └────
> > 
> > 
> > 
> > The source code of this mail is attached.
> > 
> > 
> > 
> > --
> > 
> > Emmanuel Charpentier
> >