Popular recipes tagged "meta:loc=12"

How to handle PDF embedded files with PyMuPDF (Python)

2017-07-11T18:57:54-07:00

Python recipe 580796 by Jorj X. McKie (embedded_files, fitz, mupdf, pdf, pymupdf). Revision 3.

Version 1.11.0 (based on MuPDF v1.11) allows exporting, importing and interrogating files embedded in a PDF.

PDF "/EmbeddedFiles" are similar to ZIP archives (or the Microsoft OLE technique), allowing arbitrary data to be incorporated in a PDF and benefit from its unique features.

Number of bits needed to store an integer, and its binary representation (Python)

2017-03-12T23:10:48-07:00

Python recipe 580762 by Vasudev Ram (binary, formats, integers, numbers, representation, type).

This recipe shows how to find, via Python code, the number of bits needed to store an integer, and how to generate its binary representation. It does this for integers from 0 to 256.

More details and full output here:

https://jugad2.blogspot.in/2017/03/find-number-of-bits-needed-to-store.html

Installed Modules (Perl)

2015-07-17T04:18:15-07:00

Perl recipe 579084 by Roger Mbiama Assogo (application, debugging, network).

Additional Perl modules are installed on the server (aside from the standard libraries) run from a web broswer.

Draw a diamond with asterisks using recursion (Python)

2014-11-07T17:51:32-08:00

Python recipe 578959 by Stephen Chappell (drawing).

Given the following function header:

def triangles(n):

If n for example is 5, then the drawing would be like this:

    *
  * * *
* * * * *
  * * *
    *

First n primes numbers (Python)

2014-09-20T19:33:41-07:00

Python recipe 578923 by juan . Revision 6.

Using the Sieve of Eratosthenes find the first n primes numbers.

Name a lambda (Python)

2014-07-02T20:54:01-07:00

Python recipe 578902 by David Weil (func_name, introspection, lambda, name, naming).

A very simple recipe to allow you easily name lambda-objects (or other kind of objects, callable, for example, partial objects) you create, with little overhead and friendly syntax.

php backwards compatibility porting tips (PHP)

2013-02-10T00:40:26-08:00

PHP recipe 578452 by imam ferianto (backwards, compatibility, old, php4, php5).

Hello again, on december 2012, I was porting my old php code (php4) to new php 5.4.3. There are to many errors within code, especially for session, eregi, global variables and others. This some pieces step for compatibility porting:

add global variable definiton on some function that need outside variable <code> function getuser(){ global $loginid,$password; } </code>
replace eregi(/find/,str) with preg_match(//,str)
add function exists for function that not exists in php5.4.3. for example: <code> if(!function_exists("session_is_registered")){ function session_is_registered($var){ return isset($_SESSION[$var]); } } if(!function_exists("session_register")){ function session_register($var){ $_SESSION[$var]=$_GLOBALS[$var]; } } </code>

Ok there is my tips, how about you?

Traverse dotted attribute of an object using built-in function reduce (Python)

2013-01-05T05:49:27-08:00

Python recipe 578398 by Chaobin Tang (唐超斌) (attributes, bif, recursive, reduce).

Making good use of reduce() to traverse dotted attribute of an object.

General decorators decorator (Python)

2012-11-13T09:44:07-08:00

Python recipe 578325 by Hans Zauber (decorators).

A general decorator aimed to decorate decorators, letting them keep (some of) the original attributes of the functions they decorate.

Running linux command inside your python script (Python)

2012-09-09T08:08:46-07:00

Python recipe 578254 by Ahmed Kamel (linux, python, sysadmin).

Running any linux command line inside your python script.

Primes (Python)

2012-06-05T05:16:42-07:00

Python recipe 578155 by wycao2k .

This program is to produce prime numbers less than and equal to n.

List of datasets in SPSS (Python)

2011-10-27T06:12:13-07:00

Python recipe 577925 by Petr Zizka (dataset, spss).

Return list with opened datasets

using `from somename.api import *` when somename is a single module (Python)

2011-08-12T20:24:11-07:00

Python recipe 577839 by Ethan Furman (api, import, modules, __all__).

Allow a module to export a subset of __all__, so a user can do from module.api import *

sleep_min: Sleep for a minimum number of seconds (Python)

2011-02-08T16:44:36-08:00

Python recipe 577568 by Drew Vogel (sleep, time).

time.sleep(delay) will sleep for, at most, delay seconds. This function will sleep for at least delay seconds.

Write a PNG image in native Python (Python)

2010-10-28T12:03:52-07:00

Python recipe 577443 by Campbell Barton (alpha, image, pil, png, save).

This is a simple PNG writing function, intended to be as small as possible. It only supports RGBA 32bit PNGs and the input should be a buffer of rgba bytes.

Tested for python 2 and 3.

Calculating PI using random numbers (Monte Carlo method) (Python)

2010-03-27T00:58:24-07:00

Python recipe 577154 by FB36 (math, pi, random).

Calculating PI using random numbers (Monte Carlo method)

Convert XML to Dictionary (Python)

2009-10-28T10:42:17-07:00

Python recipe 576940 by Adam M Prost (convert, dict, dictionary, json, simple, xml). Revision 2.

A simple function to convert a headerless XML string into a dictionary using only simplejson and re.

touch (Python)

2009-09-28T16:19:23-07:00

Python recipe 576915 by Trent Mick (file, shell, touch, unix).

Python function a la the Unix touch program (man touch).

lazy property (Python)

2009-04-26T18:10:55-07:00

Python recipe 576720 by Sridhar Ratnakumar (evaluation, lazy, lazy_evaluation). Revision 6.

Python does not have lazy evaluation syntax features built-in, but fortunately decorators can be used with new-style classes to emulate such a feature. There are cases where one wants foo.property to return the actual property whose calculation takes significant amount of time.

This recipe adapts the existing property to provide a lazypropery decorator that does this.

See the first comment below for an example usage.

Also see: lazy initialization

quick Python profiling with hotshot (Python)

2009-02-20T22:35:07-08:00

Python recipe 576656 by Trent Mick (hotshot, performance, profile). Revision 2.

This is a quick snippet that I use occasionally to profile some pure-Python code, using hotshot. Basically it is this:

Put this @hotshotit decorator on the function you want to profile.
Run your code through some representative paces. The result will be a <functionname>.prof in the current directory.
Process the .prof file and print the top 20 hotspots with the given "show_stats.py" script.

Props to Todd for slapping this code together.

Hotshot is a little out of favour now, so I should -- or Todd :) -- should really come up with an equivalent that uses cProfile.