{"id":59,"date":"2013-09-23T16:03:21","date_gmt":"2013-09-23T16:03:21","guid":{"rendered":"http:\/\/drsfenner.org\/blog\/?p=59"},"modified":"2013-09-23T16:03:21","modified_gmt":"2013-09-23T16:03:21","slug":"ipython","status":"publish","type":"post","link":"https:\/\/drsfenner.org\/blog\/2013\/09\/ipython\/","title":{"rendered":"iPython"},"content":{"rendered":"

Oddly, although I’ve been using the scientific Python stack for about 10 years, I’ve never jumped on the iPython band-waggon. \u00a0Well, I’ve fired it up once or twice, but I’ve never really dug into using it. \u00a0I’ve gotten more curious about the iPython notebook facility (I assume this idea traces back to Mathematica’s notebook nomenclature). \u00a0Anyway, I decided to see what all the fuss is about (and by fuss, I mean the fact that a large number of folks at SciPy 2013 gave their presentations in iPython<\/a> or\u00a0https:\/\/www.wakari.io\/gallery<\/a>\u00a0notebooks. \u00a0So, here goes.<\/p>\n

Obviously, I could start with wakari in about five minutes, but I always like to try to “spin my own” first. \u00a0I’m on gentoo and I have iPython installed. \u00a0So, after browsing through the iPython notebook page (linked above), I found the magical incantation:<\/p>\n

ipython notebook<\/pre>\n
As is fairly typical in the roll your own universe, I got an error:<\/p>\n
Traceback (most recent call last):\r\n File \"\/usr\/bin\/ipython-python2.7\", line 9, in <module>\r\n load_entry_point('ipython==0.13.2', 'console_scripts', 'ipython')()\r\n File \"\/usr\/lib64\/python2.7\/site-packages\/IPython\/frontend\/terminal\/ipapp.py\", line 388, in launch_new_instance\r\n app.initialize()\r\n<snip> boy error messages are \"noisy\" <\/snip>\r\nFile \"\/usr\/lib64\/python2.7\/site-packages\/IPython\/frontend\/html\/notebook\/__init__.py\", line 8, in <module>\r\n raise ImportError(msg)ImportError: The IPython Notebook requires tornado >= 2.1.0<\/pre>\n
But, a quick\u00a0emerge -av www-servers\/tornado\u00a0<\/em>and ipython notebook<\/em>\u00a0I was off and running:<\/p>\n
\"ipython-start\"<\/a><\/p>\n
A simple click on the New Notebook button:<\/p>\n
\"new-notebook-button\"<\/a><\/p>\n
and I had an (i)python prompt. \u00a0Part of my goal with this is to experiment with formatting of hybrid text, mathematics, and (mostly python) source code for a book. \u00a0I have an idea in mind, but much like artistry, I have to figure out (clarify and implement) what I have in my head. \u00a0Anyway, as a simple example, I’m going to play with some description, mathematics, and code for the time-honored method of\u00a0linear regression<\/em>. \u00a0And for that, I’m going to switch over to my notebook. \u00a0Hopefully, I’ll be able to share it @http:\/\/nbviewer.ipython.org\/<\/a>. \u00a0I’ll also try the static html export facility to dump it here.<\/p>\n\n
So, it turns out I was a bit ahead of myself. \u00a0Emerging tornado<\/em> installed a half-baked, and somewhat broken, MathJax processing. \u00a0This resulted in some weird “this works, that doesn’t” \\(LaTeX\\) support. \u00a0I uninstalled iPython<\/em> and www-servers\/tornado\u00a0<\/em>and I made some edits to \/etc\/portage\/package.use:<\/em><\/p>\n
mfenner [528] % grep dev-python\/ipython \/etc\/portage\/package.use\r\ndev-python\/ipython -wxwidgets matplotlib examples notebook<\/pre>\n
The change resulted in a much happier installation.<\/p>\n
I dug up (“Googled”) a few resources for editing the notebooks, but the underlying URLs are are a bit ugly (they might break):\u00a0Rich Display System<\/a>\u00a0and \u00a0Markdown Cells<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"
Oddly, although I’ve been using the scientific Python stack for about 10 years, I’ve never jumped on the iPython band-waggon. \u00a0Well, I’ve fired it up once or twice, but I’ve never really dug into using it. \u00a0I’ve gotten more curious about the iPython notebook facility (I assume this idea traces back to Mathematica’s notebook nomenclature). […]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6,7],"tags":[],"class_list":["post-59","post","type-post","status-publish","format-standard","hentry","category-mrdr","category-sci-math-stat-python"],"_links":{"self":[{"href":"https:\/\/drsfenner.org\/blog\/wp-json\/wp\/v2\/posts\/59","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/drsfenner.org\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/drsfenner.org\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/drsfenner.org\/blog\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/drsfenner.org\/blog\/wp-json\/wp\/v2\/comments?post=59"}],"version-history":[{"count":15,"href":"https:\/\/drsfenner.org\/blog\/wp-json\/wp\/v2\/posts\/59\/revisions"}],"predecessor-version":[{"id":77,"href":"https:\/\/drsfenner.org\/blog\/wp-json\/wp\/v2\/posts\/59\/revisions\/77"}],"wp:attachment":[{"href":"https:\/\/drsfenner.org\/blog\/wp-json\/wp\/v2\/media?parent=59"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/drsfenner.org\/blog\/wp-json\/wp\/v2\/categories?post=59"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/drsfenner.org\/blog\/wp-json\/wp\/v2\/tags?post=59"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}