jorgeas80

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

/* 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

- 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

# 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

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

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

jorgeas80

# 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

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

jorgeas80

#!/bin/bash
git diff remote $1

jorgeas80

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