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Recursive Unix bang-bang in Python 20 Aug 2013 | 11:14 pm
There is a new series that goes 2, 3, 5, 17, 161, 15681, … and has been added to OEIS as well as being blogged about by both Shadab Ahmed and Robin Houston. The series comes from a recurrence relatio...
Set divisions/partitions 8 Jul 2013 | 02:23 am
You all remember Venn diagrams don't you? Well, after needing to split two sets into: Items unique to set1 Items common to both sets items unique to set2 For yet another time, I thought that the ...
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What's the best way to interleave two Python lists? blog.jarrodmillman.com 10 Oct 2010 | 01:05 pm
[NOTE: I wrote this in January 2009, but didn't publish it. Originally, I planned to provide a short discussion about each of the potential solutions listed below, which I never got around to doing....
Randomly select element from python list w3mentor.com 19 Jul 2013 | 04:36 pm
mylist = ['z', 'y', 'x', 'v', 'u'] from random import choice print choice(mylist)
15 Python Array Examples – Declare, Append, Index, Remove, Count thegeekstuff.com 14 Aug 2013 | 05:00 pm
An array is a data structure that stores values of same data type. In Python, this is the main difference between arrays and lists. While python lists can contain values corresponding to different dat...
Case Study: An Organized Index of Law Professionals fuzzyfuture.com 11 Sep 2008 | 08:13 pm
Technologies AJAX, JQuery, JavaScript, PHP, MySQL, SEO, Python, Google Maps, PayPal Canada Lawyer Listingwww.canadalawyerlist.com Canada Laywer Listing: An Organized Index of Canadian Law Professional...
How to sort instance by key or values inside list in Python obroll.com 4 May 2012 | 04:43 pm
Sometimes we need to sorting a list which contain instances. And we need to sort by instances keys or values. This commonly happen in Django. So, basically, we just assign instance into dictionary an...
Practical Django Projects Book Review djangoapp.com 25 Dec 2008 | 03:21 pm
I’ve started working on Python & Django sometime around March 2008 and from then on started following Django IRC and Django blogs of which b-list by James Bennett is most useful/helpful till date. Als...
Use Python + Gmail to connect your email list to Twitter, Flickr, and everything ck37.com 22 Feb 2009 | 11:44 am
Tweet Online social media is growing in complexity The role of online social media continues to grow in importance for political organizations. Facebook, MySpace, YouTube, Flickr, Twitter, and dozen...
PostgreSQL UPSERT (in Python) dound.com 10 Jan 2011 | 01:53 pm
PostgreSQL does not yet support the UPSERT command (though it is on their Todo list). If you have a row you want to update (if it already exists in the database) or insert (if it doesn’t exist yet), t...
如何在 Python 中构建一个自递归的 tuple blog.ieph.net 16 Feb 2012 | 07:26 am
Python 中的 tuple 是 immutable 的，也就是一旦创建就不能改动，这样一来操作没有副作用，在函数式编程中很有意义。但是 immutable 也有些不便，例如只能构建树和有向无环图，不能构建环。 list 可以轻松地实现自递归： 但是由于 tuple 不能修改，这种方式是不行的。 另一个思路是 Pickle ，不过 Pickle 实际上也是以类似执行 Python 代码的方...
将 Vim 打开的文件加入 Windows 7 跳转列表 blog.ieph.net 10 Sep 2011 | 12:23 am
Windows 7 的跳转列表（Jump List）是我挺喜欢的一个功能，可惜不知为何用 Vim 打开的文件并不会加入列表。这个小问题让我纠结了一年，直至最近发现 Vim script 可以内嵌 Python 才得以解决。 软件： 1、使用 DYNAMIC_PYTHON 编译的 gVim 2、Python 3、PyWin32 另外虽然名字是 PyWin32，但是 64 位下一点问题都没有...
