I want to change the shebang string every time I create a new Python file, some projects use Python 2 and other use Python 3, so the shebang should change according to the value of a variable in the .dir-locals.el file of the project.
To generate the header text I use header2.el. There is the code I have so far:
(defvar-local shackra:var-python-ver 2
"Indica que versión de Python estamos usando, Python2 o Python3")
(put 'shackra:var-python-ver 'safe-local-variable-values #'integerp)
;; configuración basica para python-mode y elpy-mode
(setf python-indent-guess-indent-offset nil
python-indent 4
python-indent-offset 4
elpy-modules '(elpy-module-company
elpy-module-eldoc
elpy-module-pyvenv
elpy-module-yasnippet)
elpy-rpc-backend "jedi")
;; habilita elpy
(elpy-enable)
(defun shackra:python-switch-python-version ()
"Cambia entre (i)Python2 o (i)Python3 dependiendo de ciertas variables"
(if (eq shackra:var-python-ver 2)
(setf elpy-rpc-python-command "python2"
elpy-interactive-python-command "ipython2"))
(setf elpy-rpc-python-command "python3"
elpy-interactive-python-command "ipython"))
(defun shackra:header-python-shebang-coding ()
"Inserta los famosos shebang (#!) y “coding”"
(if (eq shackra:var-python-ver 2)
(insert "#!/usr/bin/python2\n")
(insert "#!/usr/bin/python3\n"))
(insert header-prefix-string "-*- coding: utf-8 -*-\n\n"))
(add-hook 'python-mode-hook (lambda ()
(electric-indent-local-mode -1)
(shackra:python-switch-python-version)
(setf make-header-hook '(shackra:header-python-shebang-coding))
(auto-make-header)
(py-autopep8-enable-on-save)))
If the content of a .dirs-locals.el for a directory is:
((python-mode
(shackra:var-python-ver . 3)))
My configuration changes correctly in (shackra:python-switch-python-version), however, (shackra:header-python-shebang-coding) inserts the string #!/usr/bin/python2 when creating a new Python file inside that directory.
Why does this happens and how can I fix this?
