What a way to become immortal… One day I wrote her name upon the strand, But came the waves and washed it away: Again I wrote it with a second hand, But came the tide, and made my pains his prey. “Vain man,” said she, …
Hoy decidí hacer un post sobre Flake, Black y Pre-Commit. ¿Existe alguna relación? ¿Me sirven para algo en particular? ¿Debería comenzar a usar estas herramientas en mis proyectos? Hace un buen rato había querido investigar un poco más al respecto de esto y bueno, este es mi resumen. Continue reading Calidad de código en Python
Some years ago a coworker (Julian E.) shared this video with us, unfortunately I lost the link, weeks ago I was trying to find it because I find it interesting and I share some ideas with its author (Bryan Lunduke), but I could not find …
Siempre es bueno conocer por qué utilizar un lenguaje de programación, hoy estaré comentando un par de cosas respecto a python. Ventajas Fácil aprendizaje He visto que muchas personas, blogs, escuelas y universidades manifiestan lo fácil que es aprender python, personalmente tambien considero a python …
Hace un buen rato conocí las funciones map, reduce y filter, escribo este post ya que como no las utilizo muy menudo, siempre que necesito utilizarlas, gasto algo de tiempo volviendo a recordar su uso. So… este es mi forma de recordar cómo utilizarlas, espero les sea útil.
¿Para qué puede servir?
R:/ Realizar una operación a cada elemento de una lista
Ejemplo:
A = [1, 2, 3, 4]
B = map(lambda x: x + 1, A)
print(B)
<map object at ...>
print(list(B))
=> [2, 3, 4, 5]¿Para qué puede servir?
R:/ Obtener un resultado de una lista de elementos
Ejemplo:
from functools import reduce
A = [10, 2, 4, 1, 1]
B = reduce(lambda x, y: x + y, A)
print(B)
==> 18¿Para qué puede servir?
R:/ Seleccionar elementos de una lista
Ejemplo:
A = [1, 7, 9, 11, 19, 17, 18, 20]
B = filter(lambda x: x % 2 == 0, A)
print(B)
<filter object at ...>
print(list(B))
==> [8, 18]
Need to code something and you do not have an IDE? Try these few online coding tools, I’m sure they will help you from your rush. Repl.it One of the most useful tools, it allows you to code without an IDE, here are a few …
En aquellos días donde todo era felicidad, un día me pidieron ayuda para configurar un Mac nuevo y casi me quedé en blanco porque no sabía qué instalarle, por acá comparto un par de aplicaciones que considero son esenciales. Navegadores: Chrome, Firefox, Opera Google Chrome …
Hello, long time no see!
Recently I had a situation in which I needed to have two processes running on a docker container, and this docker container was running on my RPi. So… I solved my situation using screen.
It is an awesome tool that allows us to have multiple terminals from a physical one. You can check more information here
Easy, just type this on your RPi:
sudo apt-get install screen
It is even easier! Here is a cheatsheet of the basic usage:
screen -s session-name. After this you will be on that new terminal.ctrl + a + d.screen -lssession-namectrl + k, this will ask you and you just have to hit “y” to kill that sessionHere is some context to my situation. I need to connect to my RPi, run a docker container, and run two processes on that docker container, here is what I do.
# connect to my rpi ssh [email protected] # run docker compose on the background docker-compose up -d # create a new session with screen, this will log me in into my new session screen -S beat # list docker containers running docker ps # connect the terminal on the docker image docker exec -it name-of-the-container bash # load some env vars source env_vars # start celery beat celery beat --app config.celery -l info # close beat session ctrl + a + d # create a new session with screen, this will log me in into my new session screen -S worker # list docker containers running docker ps # connect the terminal on the docker image docker exec -it name-of-the-container bash # load some env vars source env_vars # start celery worker celery worker --app config.celery -l info # close beat session ctrl + a + d
And that is, after this, celery beat and worker will be running on background.
Here is a guide to remove docker images, containers and volumes. Purge unused Images, Containers and Volumes docker system prune -a Remove an specific docker image First, list all the images or filter by name List all the images docker images -a Filter by name …