first need to setup the orgmode plugin for nikola refer to here, then put this into init.el ;;; set up new nikola new post directly in emacs ;; does not work on windows (defun publish-blog-post () "nikola github-deploy" (interactive) (save-buffer) (let ((my-blog-repo "path to your blog repo"))) ;; (let (my-blog-repo)) ;; (setq my-blog-repo "~/shelper.github.io") (cd my-blog-repo) (shell-command "nikola github_deploy")) (defun new-blog-post (title) "new blog post to shelper.github.io" (interactive "sEnter post title: ") (let ((my-blog-repo "path to your blog repo"))) (cd my-blog-repo) (setq new-post-cmd (concat "nikola new_post -f orgmode -t " "\"" title "\"")) (shell-command new-post-cmd) (setq new-post-file (concat my-blog-repo "/posts/" (replace-regexp-in-string " " "-" title) "....

use jupyterlab use interact for interactive widget use qgrid for better dataframe display within ipython notebook, follow instructions here %load_ext sql for sql query within the notebook, refer to here

A few things to setup the IPython and Jupyter for a best practise. IPython configuration Change ~/.ipython/profile_default/startup/init.ipy for their usage respectively To enable versioning of the python/jupyter environment, you need to pip install version_information and then add below, afterward for each IPython notebook file I put %version_information numpy, scipy, matplotlib, pandas to display my python environment version information %load_ext version_information To enable autoloading of modified modules in IPython, add below %load_ext version_information %load_ext autoreload %autoreload 2 I also added the lines below just because I use them everytime I open IPython import numpy as np import matplotlib....

so there is a post described using key chord for fast buffer switching between most recent two buffers. it works for most cases, but if you are using org babel mode and editing source code in the *org src .* buffer, then this *org src .* buffer cannot be accessed by the method described here. so I made another function to solve this issue, and here it is: (defun get-next-buffer () (interactive) (if (string= (car (helm-buffer-list)) " *Minibuf-1*") (switch-to-buffer (car (cdr (helm-buffer-list)))) (switch-to-buffer (car (helm-buffer-list))))) (key-chord-define-global "jk" 'get-next-buffer) strangely when switching buffer using `helm-buffer-lists`, and if you exit without selecting any buffer, you gets `*Minibuf-1*` into the buffer list and will switch to minibuffer....

using Nikola with Travis CI on github.io pages major reference here it is noticeable that instead of running travis login travis enable travis encrypt-file id_rsa --add we should run travis login travis encrypt-file id_rsa --add travis enable