Ensure to define functions before calling them

README.org

@@ -2126,7 +2126,10 @@ follows a list detailing and motivating each listing:
                  ,(when (fboundp 'maxima-mode) '(maxima . t))
                  (org . t)
                  (perl . t)
-                 (python . t)
+                 ;; The next two functions are not bound during bootstrap.
+                 ,(when (and (fboundp 'choose-common-python-interpreter)
+                             (fboundp 'choose-common-python-linter))
+                    '(python . t))
                  (shell . t))))
    '(org-export-backends '(ascii beamer html icalendar latex odt texinfo))
    '(org-file-apps '((auto-mode . emacs)
@@ -4491,18 +4494,6 @@ rules which make [[https://flake8.pycqa.org/en/latest/][flake8]] or [[https://py
 Finally, listing [[lst:flake8-nocolor][flake8-nocolor]] and [[lst:ruff-nocolor][ruff-nocolor]] pipe the =stdout= output of the
 [[https://pypi.org/project/flake8/][flake8]] and [[https://pypi.org/project/ruff/][ruff]] executables through =cat= to remove escape sequences.
 
-#+caption[Setup Python mode]:
-#+caption: Setup Python mode.
-#+name: lst:setup-python-mode
-#+begin_src emacs-lisp
-(with-eval-after-load 'python
-  (custom-set-variables
-   '(python-indent-guess-indent-offset nil)
-   '(python-shell-completion-native-disabled-interpreters '("ipython3" "pypy")))
-  (choose-common-python-interpreter 'python)
-  (choose-common-python-linter 'ruff-nocolor))
-#+end_src
-
 #+caption[Choose a common Python interpreter]:
 #+caption: Choose a common Python interpreter for =ob-python= and =python-mode=.
 #+name: lst:choose-common-python-interpreter
@@ -4584,6 +4575,18 @@ Finally, listing [[lst:flake8-nocolor][flake8-nocolor]] and [[lst:ruff-nocolor][
                python-check-command python-flymake-command))))
 #+end_src
 
+#+caption[Setup Python mode]:
+#+caption: Setup Python mode.
+#+name: lst:setup-python-mode
+#+begin_src emacs-lisp
+(with-eval-after-load 'python
+  (custom-set-variables
+   '(python-indent-guess-indent-offset nil)
+   '(python-shell-completion-native-disabled-interpreters '("ipython3" "pypy")))
+  (choose-common-python-interpreter 'python)
+  (choose-common-python-linter 'ruff-nocolor))
+#+end_src
+
 #+caption[Access =pyenv=]:
 #+caption: Access =pyenv=.
 #+name: lst:access-pyenv