fix ob-python

lisp/my/my.el

@@ -91,7 +91,8 @@
   *Table*
   [[help:org-shiftleft][Move cell left]] .......... =S-left=    [[help:org-shiftup][Move cell up]] .............. =S-up=
   [[help:org-shiftright][Move cell right]] ........ =S-right=    [[help:org-shiftdown][Move cell down]] .......... =S-down=
-  [[help:org-table-blank-field][Clear cell]] ................. =SPC=
+  [[help:org-table-blank-field][Clear cell]] ................. =SPC=    [[help:org-table-shrink][Shrink columns]] ..... =C-u C-c TAB=
+  [[help:org-table-toggle-column-width][Shrink/expand column]] ... =C-c TAB=    [[help:org-table-expand][Expand columns]] . =C-u C-u C-c TAB=
 
   [[help:org-table-create-or-convert-from-region][Convert seperator (1. tab, 2. comma, 3. space)]] ............... =C-c= =|=
   , comma .............. =C-u= =C-c= =|=    , tab separator .. =C-u= =C-u= =C-c= =|=
@@ -130,6 +131,7 @@
   - [[help:eval-last-sexp][last to echo]] ......... =C-x= =C-e=    [[help:backward-sexp][Jump tp prev. expression]] . =C-M-b=
   - [[help:eval-print-last-sexp][last to buffer]]                    [[help:kill-sexp][Cut expression]] ........... =C-M-k=
   [[help:mark-sexp][Mark expression]] .......... =C-M-@=    [[help:backward-kill-sexp][Cut last expression]] . =C-M-backsp=
+  [[help:counsel-set-variable][Set variable]] .............. =F2 j=
 
 
 *IBuffer*
@@ -310,6 +312,15 @@ print it in the message buffer."
   ;; https://emacs.stackexchange.com/questions/7375/can-i-format-cells-in-an-org-mode-table-differently-depending-on-a-formula
   (require 'ov)
 
+  (defun my-org-toggle-emphasis ()
+    "Toggle hiding/showing of org emphasize markers."
+    (interactive)
+    (if org-hide-emphasis-markers
+        (set-variable 'org-hide-emphasis-markers nil)
+      (set-variable 'org-hide-emphasis-markers t))
+    (org-mode-restart))
+  (define-key org-mode-map (kbd "C-c C-x C-e") 'my-org-toggle-emphasis)
+
   (defun my-org-keywords ()
     "Parse the buffer and return a cons list of (key . value)
 from lines like:

scripts/test/test.org

@@ -1,6 +1,7 @@
 
+* syntax highlighting
 
-* graphviz dot
+** graphviz dot
 #+begin_src dot
 digraph G {
   main -> parse -> execute;
@@ -14,7 +15,7 @@ digraph G {
 }
 #+end_src
 
-* gnuplot
+** gnuplot
 #+begin_src gnuplot :results silent
 reset
 
@@ -35,3 +36,30 @@ h(x) = 10*sqrt(abs(x))
 
 plot f(x) w lp lw 1, g(x) w p lw 2, h(x) w l lw 3
 #+end_src
+
+
+* custom header
+
+** python
+
+- interactive inside org
+- html export creates a svg file
+- latex export creates a pgf file
+
+#+HEADER: :var fname=(mpl-var "img/peltier-characteristic")
+#+HEADER: :epilogue (by-backend (html "fig.savefig(fname);print(fname, end='')") (t "plt.show()"))
+#+HEADER: :results (by-backend (html "output file") (t "none"))
+#+begin_src python :exports results
+import numpy as np
+import matplotlib.pyplot as plt
+x = [-4, -3, -2, -1, 0, 1, 2, 3]
+y1 = [-11.2, -11.6, -7.0, 3.2, 18.3, 39.0, 68.2, 125.0]
+y2 = [-8.2, -8.3, -3.9, 7.3, 22.9, 47.3, 87.1, 136.2]
+fig, ax = plt.subplots(1, 1, dpi=100, layout='constrained', figsize=[6.4*1.5/2, 4.8*1.5/2])
+ax.plot(x, y1, '.-', label='15°C')
+ax.plot(x, y2, '.-', label='20°C')
+ax.legend()
+ax.set_xlabel('Electrical current, A')
+ax.set_ylabel('Temperature, °C')
+ax.set_title('Characteristic curve of the peltier element')
+#+end_src

settings/org-settings.el

@@ -955,7 +955,12 @@ usage: #+HEADER: :results (tpl-results)
   )
 
 (use-package ob-python
-  :defer t
+  :after (org-src python)
+  ;; :commands (org-babel-execute:python
+  ;;            org-babel-variable-assignments:python)
+  ;; :init
+  ;; (with-eval-after-load 'org
+  ;;   (add-to-list 'org-babel-load-languages '(python . t)))
   :config
   (defun mpl-var (filename)
     "\