w495’s gists

w495 / content_group_dao.py

Created October 29, 2017 16:25

	# -- coding: utf8 --

	from __future__ import absolute_import, print_function

	import six


	class BaseFieldDao(object):
	_value = None
	_entity = None

w495 / cyrillic2latin_file_renamer.py

Created August 13, 2017 00:48 — forked from etrushkin/cyrillic2latin_file_renamer.py

Cyrillic to Latin File Changer

	#!/usr/bin/python
	# -- coding: utf-8 --

	# http://stackoverflow.com/questions/5574702/how-to-print-to-stderr-in-python
	from __future__ import print_function
	import sys
	def eprint(args, *kwargs):
	print(args, file=sys.stderr, *kwargs)

	import errno

w495 / one_line_handler.py

Last active May 19, 2017 04:25

OneLineHandler for http://stackoverflow.com/a/38895482/2586820

	import logging


	class OneLineHandler(logging.StreamHandler):

	def emit(self, record):
	try:
	msg = self.format(record)
	stream = self.stream
	stream.write('\u001b[1000D' + msg)

w495 / pyav_rtmp_example.py

Last active June 15, 2019 21:15

Пример работы с видео в Python. Есть RTMP-поток и RTMP-сервер, на который нужно отправить этот поток. Создано по мотивам https://ru.stackoverflow.com/a/664973/203032

	# -- coding: utf8 --

	import av

	# Откроем ресурс на чтение
	input_resource = av.open(
	'rtmp://src_stream:1935/play'
	)
	# Откроем ресурс на запись.
	output_resource = av.open(

w495 / aggregate_concat.py

Last active April 18, 2017 17:09 — forked from ludoo/aggregate_concat.py

Django aggregates GROUP_CONCAT support for MySQL

	"""
	From http://harkablog.com/inside-the-django-orm-aggregates.html
	with a couple of fixes.

	Usage: MyModel.objects.all().annotate(new_attribute=GroupConcat('related__attribute', separator=':')
	"""

	from django.db.models import Aggregate
	from django.db.models.sql.aggregates import Aggregate as SQLAggregate

w495 / dns_resolver_middleware.py

Last active June 21, 2017 00:19

Scrapy downloader middleware class for handling IPv6-only hosts.

	# -- coding: utf8 --

	from __future__ import absolute_import, division, print_function

	import socket
	from urlparse import urlparse


	class DnsResolverMiddleware(object):
	"""

w495 / region_tree.py

Created November 7, 2016 16:32


	from apps.genapi import models


	class RegionTreeManager(models.Manager):

	def handle_qs(self, qs):
	not_detailed_query = "not find_in_set('detailed', Options)"
	not_deleted_query = "not find_in_set('deleted', Options)"
	qs = qs.extra(where=[not_detailed_query, not_deleted_query])

w495 / bashline.sty

Last active October 24, 2016 22:13

bashline.sty — simple implementation of command line calls for [Xe]LaTeX.

	% !TeX encoding = UTF-8
	\ProvidesPackage{bashline}[2016/10/24 v. 0.1]

	\makeatletter
	\newcommand{\bashline@file@name}[1]{%
	/tmp/${USER}-${HOSTNAME}-\jobname-#1.tex%
	}
	\newread\bashline@file
	\newcommand{\bashline@command@one}[2][tmp]{%
	\immediate\write18{#2 > \bashline@file@name{#1}}

w495 / dict_to_xml.py

Created October 10, 2016 16:42

Dumps python dict to xml string. Current example is suitable for dumping OVS-XML format from python dictionay

	# -- coding: utf-8 --

	from __future__ import absolute_import, division, print_function

	import lxml.etree as et
	import six

	def dumps(data):
	name = data.keys()[0]
	value = data[name]

w495 / process_pool_executor_example.py

Last active April 21, 2017 00:30

Example for concurrent.futures.ProcessPoolExecutor. One of the key ideas to use `as_completed` to get un-ordered result. If a sequence order is import, you should sort result by yourself. This is part of https://github.com/w495/python-video-shot-detector

	import itertools
	import multiprocessing as mp
	from concurrent.futures import ProcessPoolExecutor, as_completed

	from .base_extractor import BaseExtractor

	class ParallelExtractor(BaseExtractor):

	POOL_SIZE = mp.cpu_count()
	IMAGE_GROUP_SIZE = 512

w-495 w495