peterdemin’s gists

peterdemin / one_session_per_user.middleware.py

Last active May 8, 2023 17:10

django middleware that disallows concurent user login while allowing such for administrators

	from one_session_per_user.models import User, Visitor
	from django.contrib.sessions.models import Session


	class OneSessionPerUserMiddleware(object):
	"""http://stackoverflow.com/a/1814797"""

	def process_request(self, request):
	if isinstance(request.user, User):
	current_key = request.session.session_key

peterdemin / serializer.py

Created July 15, 2013 04:59

Abstract django model serializer. Instead of flat structure, allows using hierarchies. You must override Model in descendants. Constructor works in two ways: 1. Passing only model instance - serializes it to dict (self.data); 2. Passing both instance and data - in that order - deserializes data into passed instance. See attached usage.py for exa…

	import os
	from django.db import models


	class SimpleSerializer(object):
	Model = None
	exclude = ()
	ingored_fields = (
	models.AutoField,
	models.ForeignKey,

peterdemin / User-Default (Linux).sublime-keymap

Last active December 21, 2015 05:18

My sublime text settings Command "prompt_insert_nums" is available through sublime package Insert Sequences

	[
	{ "keys": ["ctrl+alt+up"], "command": "select_lines", "args": {"forward": false} },
	{ "keys": ["ctrl+alt+down"], "command": "select_lines", "args": {"forward": true} },
	{ "keys": ["ctrl+q"], "command": "close" },
	{ "keys": ["ctrl+w"], "command": "find_under_expand" },
	{ "keys": ["ctrl+r"], "command": "wrap" },
	{ "keys": ["ctrl+alt+n"], "command": "prompt_insert_nums" }
	]

peterdemin / twitter-unfollow.js

Created August 17, 2013 12:25

Web browser console command to unfollow everyone on https://twitter.com/following page by issuing onclick() on all "Unfollow" buttons.

$('button span.unfollow-text').parent().each(function(i, a) {a.click();})

peterdemin / commit-msg.py

Created September 8, 2013 11:07

git commit message hook, that automatically adds ticket number to commit message

	#!/usr/bin/python
	#-- coding: utf-8 --
	import os
	import re
	import sys
	import shutil
	import subprocess


	re_ticket = re.compile(ur'(?u)^([0-9]+)-.+')

peterdemin / install-build-agent.sh

Last active December 22, 2015 15:59 — forked from ianbattersby/gist:4641450

Script meant to be used as vagrant shell provisioner. It doesn't use /vagrant shared folder though. That means it can be launched from any remote debian machine.

	#!/bin/bash

	# Replace this with actual server address
	serverUrl="10.1.136.242:80"

	if [ -e "/etc/init.d/teamcity" ]
	then
	echo "TeamCity allready installed"
	exit 0
	fi

peterdemin / stress_heap.c

Created October 15, 2013 05:25

Slightly rewritten test from http://bugs.python.org/issue19246 that demonstrates memory fragmentation issue.

	#include <stdio.h>
	#include <stdlib.h>
	#include <assert.h>


	int create_huge_linked_list(void **last_item) {
	int i;
	void *prev_item = NULL;

	for(i = sizeof(void *); i < 1000000; i++) {

peterdemin / .gitconfig

Last active December 26, 2015 20:49

Git settings for using Meld under Windows. (C:\Users\user\.gitconfig) Note: Meld's executable path must not contain spaces or non-ascii characters!

	[merge]
	tool = meld
	[mergetool "meld"]
	prompt = false
	keepBackup = false
	keepTemporaries = false
	path = C:/Meld/meld/meld.exe
	cmd = "/c/Meld/meld/meld.exe $PWD/$LOCAL $PWD/$BASE $PWD/$REMOTE --output=$PWD/$MERGED"

peterdemin / #2682 regression

Last active August 29, 2015 14:06

	#!/usr/bin/env python
	# regression test for https://bitbucket.org/zzzeek/sqlalchemy/issue/2682/is_-and-isnot-in-conjunction-with-boolean

	from sqlalchemy import create_engine, Column, Integer, Boolean
	from sqlalchemy.orm import sessionmaker
	from sqlalchemy.ext.declarative import declarative_base


	Base = declarative_base()
	engine = create_engine('mysql://user:password@localhost/mre')

peterdemin / description

Last active August 29, 2015 14:10

celery retry task in chain of groups

	Steps to reproduce:
	1. apply async chain of groups of tasks;
	2. raise retry inside task(s) of first group;
	3. watch, how tasks of second group are finished before those in first group.

	Particularly in attached logs all 'add' tasks should finish before starting of 'mul' tasks.
	But as retry occurs, order does not hold anymore.

	The actual order was:

Peter Demin peterdemin