luzfcb

Tested only on Ubuntu 22.04, KDE Neon User Edition (based on Ubuntu 22.04) and OSX Mojave or higher.

will probably work on other newer versions, with no changes, or with few changes in non-python dependencies (apt-get packages)

NOTE: Don't create a .sh file and run it all at once. It may will not work. Copy, paste, and execute each command below manually. :-)

Ubuntu

# DO NOT RUN THIS AS A ROOT USER

neara

from django.forms import ModelForm
from django.forms.models import inlineformset_factory

from models import Sponsor, Sponsorship


class SponsorForm(ModelForm):

    class Meta:
        model = Sponsor

levidyrek

"""
Django ORM Optimization Tips

Caveats:
* Only use optimizations that obfuscate the code if you need to.
* Not all of these tips are hard and fast rules.
* Use your judgement to determine what improvements are appropriate for your code.
"""

# ---------------------------------------------------------------------------

cube-drone

Automation for the People

Long ago, the first time I read "The Pragmatic Programmer", I read some advice that really stuck with me.

"Don't Use Manual Procedures".

This in the chapter on Ubiquitous Automation. To summarize, they want you to automate all the things.

The trouble was that I hadn't much of an idea how to actually go

fleepgeek

from django.apps import AppConfig

class ForumConfig(AppConfig):
    name = 'forum'
    # This function is the only new thing in this file
    # it just imports the signal file when the app is ready
    def ready(self):
        import your_app_name.signals

vallahor

usage

python makedirs.py -f input.txt -o output.txt -indent 4

From a given txt file of directories and/or files structured by indentation generate a sh script that can create that directory tree. Be carefull with indentation.

Example:

bearfrieze

Comprehensions in Python the Jedi way

by Bjørn Friese

Beautiful is better than ugly. Explicit is better than implicit.

-- The Zen of Python

I frequently deal with collections of things in the programs I write. Collections of droids, jedis, planets, lightsabers, starfighters, etc. When programming in Python, these collections of things are usually represented as lists, sets and dictionaries. Oftentimes, what I want to do with collections is to transform them in various ways. Comprehensions is a powerful syntax for doing just that. I use them extensively, and it's one of the things that keep me coming back to Python. Let me show you a few examples of the incredible usefulness of comprehensions.

goldhand

#models.py

class Task(models.Model):
    title = models.CharField(max_length=255)
    description = models.TextField()

    def __unicode__(self):
        return self.title

fmasanori

from urllib.request import Request, urlopen
import json

req = Request(
    url='https://api.chucknorris.io/jokes/random', 
    headers={'User-Agent': 'Mozilla/5.0'}
)
resp = urlopen(req).read()
data = json.loads(resp.decode('utf-8'))

twidi

"""
Sometimes in your Django model you want to raise a ``ValidationError`` in the ``save`` method, for
some reason.
This exception is not managed by Django Rest Framework because it occurs after its validation 
process. So at the end, you'll have a 500.
Correcting this is as simple as overriding the exception handler, by converting the Django
``ValidationError`` to a DRF one.
"""

from django.core.exceptions import ValidationError as DjangoValidationError