melpomene’s gists

melpomene / toy_blockchain.py

Last active November 13, 2021 07:28

Toy blockchain implementation demonstrating Proof of work

	# This Python file uses the following encoding: utf-8
	from copy import deepcopy
	from hashlib import sha256

	class Blockchain:

	def __init__(self, difficulty = 1):
	genesis_block = GenesisBlock()
	self.chain_tail = genesis_block
	self.geneis_block = genesis_block

melpomene / binarysearchtree.py

Created April 16, 2014 21:10

Binary search tree in python


	class Node():

	def __init__(self, value):
	self.value = value
	self.left = None
	self.right = None

	def append(self, value):
	if value < self.value:

melpomene / compare_duck_type_speed.py

Created January 28, 2014 11:04

Compare isinstance, type and ducktyping to see which one is quickest.

	import time

	""""
	Compare isinstance, type and ducktyping to see which one is quickest.

	Typical output
	=============
	IsInstance 0.00567038607597
	ducktyping 0.0232819545269
	type 0.004327688694

melpomene / check_vpn.py

Created September 22, 2013 14:31

VPN verification and reconnection script for Ubuntu with network-manager.

	import os, requests, time
	from datetime import datetime
	import socket

	URL = "https://showmemyip.example.com" # EDIT THIS. NEEDS TO BE A URL THAT RETURNS YOUR PUBLIC IP.
	CORRECT_REVERSE_URL = "ipredator.se" # EDIT THIS TO BE THE REVERSE-URL OF YOUR VPN PROVIDER
	VPN_CONNECTION_NAME = "Ipredator" # EDIT THIS TO THE NAME OF THE VPN CONNECTION IN NETWORK-MANAGER.
	"""
	Run this script in cron to verify that you are connected to your desired VPN service
	which is automatically reconnected if the connection is lost

melpomene / gist:6464322

Created September 6, 2013 14:08

	all_questions = None
	for database in databases:
	if all_questions is None:
	all_questions = load_questions(database=database,verified=True)
	build_something(questions)

melpomene / download.py

Last active April 25, 2021 01:58

Script to download all your images from dailyview.com (gamla bilddagboken.se)

	#!/usr/bin/env python
	# encoding: utf-8

	"""
	Python script to download all your dailyview.com images

	Run with 'python download.py'
	Depends on requests and Beautiful soup
	"""

melpomene / lasttuesdaysocietypodcast.py

Created July 13, 2013 14:05

Python script to download all the Last Tuesday Society podcasts in one swoop

	#!/usr/bin/env python
	# encoding: utf-8

	"""
	Python script to download all the Last Tuesday Society podcasts in one swoop
	Find them here: http://www.thelasttuesdaysociety.org/podcasts.html

	Run with 'python lasttuesdaysocietypodcast.py'
	Depends on requests and Beautiful soup
	"""

melpomene / graph.geoff

Created May 16, 2013 07:41

	(1000603665) {"1000046259": 1.0, "1000045077": 1.0}
	(1001390102) {"1000913520": 1.0, "1000042346": 1.0}
	(1004797975) {"1000046435": 1.0, "1003829903": 1.0}
	.... some 200k rows more ...
	(1004536000)-[:SIMILAR]->(1000840000)
	(1004536000)-[:SIMILAR]->(1005442000)

melpomene / toXRFF.py

Last active December 16, 2015 11:18

Converts the card into XRFF format, allowing WEKA to read UTF-8 data.

	#!/usr/bin/env python
	# encoding: utf-8
	import codecs
	from collections import Counter
	class Card:
	def __init__(self, data):
	self.idnr= data[0].strip("\n")
	self.category = data[1].strip("\n")
	self.star = data[2].strip("\n")
	self.name = data[3].strip("\n")

melpomene / tostringkernelarff.py

Last active December 16, 2015 09:49

This script transforms the tab seperated files to ARFF to allow us to use String Kernel from SVM. There are some issues with WEKA and UTF-8 yet to be resolved.

	#!/usr/bin/env python
	# encoding: utf-8
	import codecs
	from collections import Counter
	class Card:
	def __init__(self, data):
	self.idnr= data[0].strip("\n")
	self.category = data[1].strip("\n")
	self.star = data[2].strip("\n")
	self.name = data[3].strip("\n")

Christopher melpomene