georgepsarakis’s gists

georgepsarakis / parallel-merge-sort.py

Last active November 6, 2020 12:56

Parallel Merge Sort - Example Code & Benchmark

	from __future__ import print_function
	import random
	import sys
	import time
	from contextlib import contextmanager
	from multiprocessing import Manager, Pool


	class Timer(object):
	"""

georgepsarakis / python-to-clojure-guide.clj

Last active August 29, 2015 14:20

Python small recipes translated to their Clojure equivalents

	;; Regular Expressions
	;; import re; re.search(r'ab.*', 'cabbage').group(0) # -> 'abbage'
	(re-find #"ab.*" "cabbage") ; "abbage"
	;; re.match(r'ab.*', 'cabbage') # -> None
	(re-matches #"ab.*" "cabbage") ; nil
	;; re.match(r'ab.*', 'abracatabra').group(0) # -> 'abracatabra'
	(re-matches #"ab.*" "abracatabra") ; "abracatabra"


	;; Sequences & Map/Filter

georgepsarakis / sqlite-kv-restful.py

Created October 28, 2014 09:16

Simple SQLite-backed key-value storage Rest API. Built with Flask & flask-restful.

	import os
	import sqlite3
	from hashlib import md5
	from time import time
	import simplejson as json
	from flask import Flask
	from flask.ext import restful
	from flask import g
	from flask import request

georgepsarakis / options.py

Last active January 4, 2016 11:48

Extended version of the argparse Python module for command line option parsing.

	from __future__ import unicode_literals
	import re
	import argparse
	from functools import partial


	class Options(argparse.ArgumentParser):
	def __init__(self, **kwargs):
	self._parsed = False
	self._options = None

georgepsarakis / github-repos-gists-backup.py

Last active February 22, 2021 11:27

Github repositories & Gists backup script

	#!/usr/bin/python
	import os
	import json
	import argparse
	import time
	import requests
	from functools import partial

	class GithubBackup(object):
	def __init__(self, parameters):

georgepsarakis / itertools.php

Created December 15, 2013 17:18

Map, filter with generator for numerically-indexed and associative arrays. Inspired from Python itertools - http://docs.python.org/2/library/itertools.html.

	<?php
	class Generator implements Iterator {
	private $index = 0;
	private $array = array();
	private $keys = array();
	private $filter = NULL;
	private $mapper = NULL;
	private $size = 0;
	private $seek = 0;
	private $last = NULL;

georgepsarakis / extended-list.py

Created December 12, 2013 08:17

Extended list. Maintains a dictionary for faster lookups (optionally keeps hash of item object representation by marshalling) and with some operator overloading can perform mathematical operations among instances.

	from collections import MutableSequence
	import marshal
	from operator import add, div, mul, neg, mod, sub
	from operator import ge, gt, le, lt, eq
	from itertools import imap

	'''
	Extended list class
	- fast lookups by maintaining a dictionary with the values
	- numeric operations between 2 instances are possible (like Octave matrices)

georgepsarakis / python-c-module-example.c

Last active December 29, 2015 22:59

Python C Module example: building a simplistic hash table with the help of some Redis libraries (https://github.com/antirez/redis - http://redis.io/).

	/*
	- setup.py
	from distutils.core import setup, Extension
	module = Extension('ht', sources = ['zmalloc.c', 'sds.c', 'dict.c', 'python-c-module-example.c'])
	setup(name = 'Hash Table', version = '1.0', ext_modules = [module])

	- install.sh
	# Fetch dependencies from https://github.com/antirez/redis
	wget https://raw.github.com/antirez/redis/2.6/src/fmacros.h
	wget https://raw.github.com/antirez/redis/2.6/src/config.h

georgepsarakis / cron-file-syntax-check.py

Created November 28, 2013 09:39

Crontab file syntax check

	#!/usr/bin/python
	import argparse
	import os
	import re

	'''
	** Crontab file syntax checking *
	Useful for scripts stored under /etc/cron.d
	and for automating crontab task distribution
	'''

georgepsarakis / cli.py

Last active December 28, 2015 19:49

REPL-CLI boilerplate for simple DSLs with built-in help, autocomplete (like Redis-CLI)

	#!/usr/bin/python
	# -- coding: utf-8 --
	from __future__ import unicode_literals
	import argparse
	import readline
	import rlcompleter
	import shlex
	import os
	import re
	try:

George Psarakis georgepsarakis