Julien Grenier juliengrenier

juliengrenier / euler8.py

Created September 2, 2015 16:05

	from operator import mul
	def euler8(digits, n=4):
	i = 0
	_max = 0
	while i <= len(digits)-n:
	_r = reduce(mul, [int(x) for x in digits[i:i+n]])
	if _r > _max:
	_max = _r

	i += 1

juliengrenier / genprimes.py

Created September 2, 2015 15:28

Prime generator

juliengrenier / gist:3958777

Created October 26, 2012 13:20

celery retry_task decorator. Depends on django transaction.

	def retry_task(name, max_retries=3, ignore_result=True, queue="celery", countdown=10, exceptions=[]):
	"""
	This decorator allows you to retry a celery task if it raised an exception of type defined in <exceptions>.
	Tasks are also wrapped by a commit_on_success decorator to avoid incomplete data in the database.

	arguments are :
	name: The name of the task
	max_retries: The number of retries before giving up [default: 3]
	ignore_result: Should celery ignores the result [default: True]
	queue: The queue name [default: "celery"]

juliengrenier / gist:3749492

Created September 19, 2012 12:56

javascript tree generator

	function randomRange(lowerBound, upperBound){
	return lowerBound + Math.random() * (upperBound-lowerBound);
	}
	function draw() {
	var canvas = document.getElementById("canvas");
	var c = canvas.getContext("2d");

	function drawBranch(l, direction) {
	c.save();
	c.fillRect(-1, 0, 2, -l);

juliengrenier / gist:2655143

Created May 10, 2012 19:01

NullProxy and Borg objects

	class NullProxy(object):
	"""Pretend you have a model object with three attributes:

	class Person(object):
	name = String(40)
	age = Integer()
	email = Email()

	And have a sub-class adding extra attributes:

juliengrenier / gist:1561439

Created January 4, 2012 18:51

String to binary representation

	str = 'a string'
	binary_representation = ''.join([bin(ord(c))[2:].zfill(8) for c in str])

juliengrenier / gist:1545528

Created December 31, 2011 22:28

Binary to string

	str = '01001000011000010111000001110000011110010010000001001110011001010111011100100000010110010110010101100001011100100111001100100001'
	print ''.join([chr(int(str[i:i+8],2)) for i in range(len(str)) if i % 8 ==0])