filipeximenes

# Leaky bucket implementation from:
# https://blog.callr.tech/rate-limiting-for-distributed-systems-with-redis-and-lua/

LEAKY_BUCKET_SCRIPT = b"""
    local ts  = tonumber(ARGV[1]) -- current timestamp
    local cps = tonumber(ARGV[2]) -- calls per second
    local key = KEYS[1]
    
    -- remove tokens older than 1 second ago
    local min = ts - 1

filipeximenes

User.objects.filter(
    Q(internal_groups__id=1) &
    ~Q(
        enrollments__event__id=15,
        enrollments__pre_status=ENROLLMENT_PRE_STATUS.going,
    )
)

filipeximenes

from django.db import transaction, connection
from events.models import Event


def count_events():
    with transaction.atomic():
        print(Event.objects.count())

        input()

filipeximenes

# serializers.py

from django.contrib.auth.models import User
from rest_framework import serializers
from bikes.models import Bike

class BikeSerializer(serializers.ModelSerializer):

    class Meta:
        model = Bike

filipeximenes

spinners = (
   Spinner.objects
          .using(request.customer.name)
          .annotate(
              avg_duration=Avg('owned_spinners__spins__duration'))
          .order_by('-avg_duration'))

filipeximenes

from django.utils import timezone

from myapp.models import Event

class EventListView(generics.ListView):

    def get_queryset(self):
        now = timezone.now()
        upcoming = Event.objects.filter(date__gte=now).order_by('date')
        passed = Event.objects.filter(date__lt=now).order_by('-date')

filipeximenes

import mock
from django.test import TestCase
from django.contrib.auth.models import User

class EmailTests(TestCase):
    
    def setUp(self):
        self.user = User.objects.create(
            username='theusername', email='the@email.com',
            first_name='Filipe', last_name='Ximenes',

filipeximenes

from django.db import models


class Bike(models.Model):
    COLOR_OPTIONS = (('yellow', 'Yellow'), ('red', 'Red'), ('black', 'Black'))

    color = models.CharField(max_length=255, null=True, blank=True,
                             choices=COLOR_OPTIONS)
    size = models.DecimalField(max_digits=4, decimal_places=2, null=True, blank=True)

filipeximenes

def categorize(lst, attrs):
    """
    Generate a dictionary of lists where the keys are generated from
    some specified attribute of the items in the list
    """
    def dive_in(obj, attrs, index=0):
        if not obj or index >= len(attrs):
            return obj
        new_obj = getattr(obj, attrs[index])
        if len(attrs) > 0:

filipeximenes

url(r'^example/$', 'account.views.example_view', name='user_info'),