Popular recipes tagged "meta:loc=8"

Inserting Images on PDF Pages (Python)

2017-05-17T21:10:26-07:00

Python recipe 580803 by Jorj X. McKie (fitz, mupdf, pdf, pymupdf).

Version 1.11.0 of PyMuPDF allows putting an image on an existing PDF page. The following example puts the same image on every page of a given PDF - like a thumbnail.

groupby() For Unsorted Input (Python)

2017-05-12T10:40:58-07:00

Python recipe 580800 by Alfe (algorithm, datastructures, generators, grouping, lazy).

We all know the groupby() which is available in the itertools standard module. This one yields groups of consecutive elements in the input which are meant to be together in one group. For non-consecutive elements this will yield more than one group for the same key.

So effectively, groupby() only reformats a flat list into bunches of elements from that list without reordering anything. In practice this means that for input sorted by key this works perfect, but for unsorted input it might yield several groups for the same key (with groups for other keys in between). Typically needed, though, is a grouping with reordering if necessary.

I implemented a likewise lazy function (yielding generators) which also accepts ungrouped input.

Hivemind (Python)

2015-07-15T12:37:13-07:00

Python recipe 579082 by Oscar Byrne (borg, defaultdict, hash, hashing, hivemind, python, singleton, state).

Inspired by the ever-popular Borg pattern, objects inheriting from Hivemind share state if initialised with the same arguments

list all locale (Python)

2014-04-19T13:41:38-07:00

Python recipe 578863 by Shane Wang .

list all locales via Python

mac address from ip address (Python)

2013-07-07T17:34:06-07:00

Python recipe 578593 by judy (address, adress, ip, mac, python).

get the mac address from ip address work only in linux system

Generating Balanced Parenthesis (Python)

2013-02-14T22:00:22-08:00

Python recipe 578458 by bartender (algorithm).

The python code generates balanced parenthesis recursively. Example for depth=3 i.e. 3 opening brackets and 3 closing brackets,the sample output should be:

((())) (()()) (())() ()(()) ()()()

The number of such output ( 5 in above case) is a Catalan Number.

Checking letters for drives that already using (Batch)

2012-11-19T08:32:33-08:00

Batch recipe 578334 by greg zakharov (disk).

For keeping order drive naming with active diskpart using.

Counting TCP\UDP endpoints (Batch)

2013-10-10T16:26:33-07:00

Batch recipe 578335 by greg zakharov (endpoint, tcp, udp). Revision 2.

Needs just for statistic, no further.

2D polygon area (Python)

2012-10-01T16:22:13-07:00

Python recipe 578275 by Jamie Bull (2d, area, geometry, polygon).

Function for finding the area of a polygon in a 2D co-ordinate system.

Zcgi Test (Python)

2012-07-02T22:44:58-07:00

Python recipe 578185 by Stephen Chappell (archive, cgi, old, test).

While trying to implement a bare-bones CGI module with little support for the then-new-to-me concept, the Zcgi module was written, and this experiment was designed to test what it could do. This is committed for archival to be run under Python 2.5 or later versions.

Minimalistic Word Wrap using Regex (Python)

2012-06-07T14:31:44-07:00

Python recipe 578162 by Alfe (minimalistic, python, regex, word, wrap).

I know there is the module textwrap and other recipes like http://code.activestate.com/recipes/148061-one-liner-word-wrap-function/

But in some constellations my recipe for a very simple word wrap might come in handy nevertheless.

Komodo JS Macro: move tabs (JavaScript)

2012-04-10T17:39:47-07:00

JavaScript recipe 578093 by Todd Whiteman (editor, komodo, macro, position, tabs, toddw).

This Komodo macro is an example to show how to programmatically re-position a Komodo editor tab. This macro moves the currently selected tab to the start of the tab list.

Base64 encode-decode Five Liner (Python)

2013-04-26T09:37:21-07:00

Python recipe 577626 by ccpizza (base64). Revision 2.

Encodes or decodes base64-encoded files. If the input or output file(s) are ommited standard input/output will be used.

The encoding direction is detected from the file name: for decoding save the script e.g. as encode64.py. For decoding create a symlink with decode in the name.

Flattening lists (Python)

2010-12-21T16:04:38-08:00

Python recipe 577509 by Michael Puckett (flatten, list).

Classic / frequently asked, 'How to flatten a list, regardless the nesting.'

hexadecimal CSS colors, convert the six-digit to the three-digit notation (Bash)

2010-10-02T14:07:23-07:00

Bash recipe 577416 by Romain Dartigues (color, css, regex, rgb, sed, shortening).

Want to replace all six-digit RGB notation (#rrggbb) to the short (three-digit #rgb) form? Or the opposite?

node.js quicklog method to log to a file (JavaScript)

2010-08-11T05:08:57-07:00

JavaScript recipe 577351 by Trent Mick (logging, nodejs).

I tend to have a "quicklog" method for a few of the languages I'm working in to do logging when stdout/stderr isn't necessarily available (GUI app) or convenient (lots of other output on stdout, etc.). My usage with nodejs was while working on the node REPL. Log output to stdout interfered with the REPL.

Flatten a list (or list of lists, etc.) (Python)

2011-03-01T03:46:26-08:00

Python recipe 577255 by Sunjay Varma (extend, flatten, list, optimization, python, smart). Revision 2.

I created this function sometime ago for my own purposes. It simply flattens a list.

Check out the first comment for another version of someone else's design.

Eight queens. Six lines. (Python)

2009-02-10T14:59:07-08:00

Python recipe 576647 by Raymond Hettinger . Revision 3.

What six lines of Python can do

Countdown to screenshot (PIL). (Python)

2009-12-03T20:07:52-08:00

Python recipe 576976 by me me (countdown, screenshot, time). Revision 2.

Tested on Linux and Windows-XP, Python 2.6 ...

Counts down to a number and takes a screenshot. I simplified one of my long lost screenshot taking codes for linux removing sound, graphics and all other unnecessary bits.

Self-Printing Program (C)

2009-06-05T01:19:17-07:00

C recipe 576798 by J Y (tricky).

The two key tricks here are using a string with an embedded %s specifier to allow the string to contain itself when printed, and to use the %c format specifier to allow printing out special characters like newlines, which could not otherwise be embedded in the output string.