luzfcb

"""
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

luzfcb

from io import BytesIO

from defusedxml import ElementTree
from django.core.exceptions import ValidationError
from django.core.validators import (
    FileExtensionValidator,
    get_available_image_extensions,
)
from django.forms import ImageField as DjangoImageField
from PIL import Image

luzfcb

# Rate limiting with Celery + Django + Redis
# Multiple Fixed Windows Algorithm inspired by Figma https://www.figma.com/blog/an-alternative-approach-to-rate-limiting/
#   and Celery's sometimes ambiguous, vague, and one-paragraph documentation
#
# Celery's Task is subclassed and the is_rate_okay function is added


# celery.py or however your App is implemented in Django
import os
import math

luzfcb

from pycallgraph import PyCallGraph
from pycallgraph import Config
from pycallgraph import GlobbingFilter
from pycallgraph.output import GraphvizOutput


class ProfilerMiddleware(object):
    includes = []

    def can(self, request):

luzfcb

#!/usr/bin/env bash
# Original Source: https://blog.godatadriven.com/black-formatting-selection
# This is a modified version of
# https://gist.github.com/JDusub83/ba2848d71644f4c3496def4c1a1d9fc8
# 
# changes:
# - Added debugging prints, permissioning/cleanup, and also a bugfix for
# selecting whole file.
# - Now the original file can only be modified from black to run without errors.
# - Added support to black pyproject.toml - https://black.readthedocs.io/en/stable/pyproject_toml.html

luzfcb

Calibre Server on Linux

Introduction

Calibre is a powerful cross-platform, open source, ebook manager and editing platform. Its calibre-server component can be used to publish an e-book library on a local network. While you can launch calibre-server as a desktop application, it can also be run as a daemon on a headless Linux server.

This tutorial on setting up calibre-server using Ubuntu 14.04 is very good, but dated.

luzfcb

from django.db import models

class Person(models.Model):
    name = models.CharField(max_length=200)
    groups = models.ManyToManyField('Group', through='GroupMember', through_fields=('person', 'group'), related_name='people')
    
    class Meta:
        ordering = ['name']
    
    def __unicode__(self):

luzfcb

<script>
    function printDiv(divName) {
         var printContents = document.getElementById(divName).innerHTML;
         var originalContents = document.body.innerHTML;

         document.body.innerHTML = printContents;

         window.print();

         document.body.innerHTML = originalContents;

luzfcb

import os

import pandas
from dateutil import parser
from django.conf import settings

#from iptu.core.models import Iptu
from core.models import Iptu

luzfcb

import os

from dateutil import parser
import pandas
from django.conf import settings

from iptu.core.models import Iptu


def gera_db_iptu():