Jorge Arévalo jorgeas80

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Python/Django developer

jorgeas80 / oneliner_join.py

Last active October 4, 2018 14:44

Python one-liner to show a comma-separated string of all the not None elements of a list

	from operator import is_not
	from functools import partial

	fruits = ["apple", "banana", None, "pear", None, "peach", None, None, "grapes"]

	# Prints: apple, banana, pear, peach, grapes
	print(", ".join(filter(partial(is_not, None), fruits)))

jorgeas80 / celery.sh

Created June 18, 2018 13:23 — forked from amatellanes/celery.sh

Celery handy commands

	/* Useful celery config.

	app = Celery('tasks',
	broker='redis://localhost:6379',
	backend='redis://localhost:6379')

	app.conf.update(
	CELERY_TASK_RESULT_EXPIRES=3600,
	CELERY_QUEUES=(
	Queue('default', routing_key='tasks.#'),

jorgeas80 / encodings y python

Last active May 23, 2018 12:04

encodings y python

	- Encoding es una manera de transformar símbolos en bytes.
	- Populares: ASCII (solo sabe transformar 127 símbolos), UTF-8 (sabe transformar todos los símbolos unicode, que son 1.1M)
	- Python 2: usa ASCII como encoding por defecto => cuando intenta transformar un símbolo en bytes, aplica ASCII. Si encuentra algo que no entiende, por defecto peta :-(

jorgeas80 / Python 3.4+ with OpenCV 3.1.0 Binding on Ubuntu 14.04

Created May 19, 2018 18:04 — forked from Asymptote/Python 3.4+ with OpenCV 3.1.0 Binding on Ubuntu 14.04

Python 3.4+ with OpenCV 3.1.0 Binding on Ubuntu 14.04

	# I have followed PyImageSearch tutorial http://www.pyimagesearch.com/2015/07/20/install-opencv-3-0-and-python-3-4-on-ubuntu/

	# Ubuntu upgrade & update current libraries
	sudo apt-get update
	sudo apt-get upgrade

	# Install dependancies
	sudo apt-get install build-essential cmake git pkg-config
	sudo apt-get install libjpeg8-dev libtiff4-dev libjasper-dev libpng12-dev
	sudo apt-get install libavcodec-dev libavformat-dev libswscale-dev libv4l-dev

jorgeas80 / get_sizes.sql

Created October 15, 2017 09:17

Get size of database objects

	SELECT
	relname as "Table",
	pg_size_pretty(pg_total_relation_size(relid)) As "Size",
	pg_size_pretty(pg_total_relation_size(relid) - pg_relation_size(relid)) as "External Size"
	FROM pg_catalog.pg_statio_user_tables ORDER BY pg_total_relation_size(relid) DESC;

jorgeas80 / initial_data.sh

Created May 12, 2017 11:13

Django dumpdata for initial data fixtures

python manage.py dumpdata app_name --indent=4 > initial_data.json

jorgeas80 / GIT Cheatsheet

Last active February 17, 2017 09:40

Some useful git commands

	# Go back to the previous commit version of a file
	```git checkout -- /path/to/file```

	# Go back to the previous commit version of everything
	```git reset --hard HEAD```

	# Revert the last PUSHED commit and make a new one to amend the changes
	```git revert HEAD```

	# Reset the last PUSHED commit and detach our working copy from the last commit

jorgeas80 / what_to_push_files.sh

Created January 19, 2017 10:00

Check the files we're about to push

	#!/bin/bash
	git diff --stat --cached $1

jorgeas80 / what_to_push_content.sh

Created January 19, 2017 09:59

Check the content of the files we're about to push

	#!/bin/bash
	git diff remote $1

jorgeas80 / check_conflicts.sh

Created January 19, 2017 09:55

Check git conflicts after a merge

	#!/bin/bash
	git diff --name-only --diff-filter=U