arkanister

class Unset:
    """
    This class represent an unset instance.
    """


unset = Unset()


def first_or_default(sequence, condition=unset, default=None):

arkanister

import datetime

from django.conf import settings
from django.utils import timezone
from django.utils.translation import ugettext_lazy as _
from rest_framework import serializers, compat


class TimestampField(serializers.Field):
    default_error_messages = {

arkanister

import itertools
import random


def _cnpj_dv(digits):
    """
    Returns the calculated verification digit.
    """
    mul = list(itertools.chain(*[range(len(digits) - 7, 1, -1), range(9, 1, -1)]))
    return ((sum([a * b for a, b in zip(digits, mul)]) * 10) % 11) % 10

arkanister

import random


def _cpf_dv(digits):
    """
    Returns the calculated verification digit.
    """
    mod = sum(a * b for a, b in zip(digits, range(len(digits) + 1, 1, -1))) % 11
    return 0 if mod < 2 else 11 - mod

arkanister

"""
Cep query by brazilian correios web services.

requirements:
    - zeep==3.4.0
"""

from zeep import Client, exceptions

arkanister

## Função para o calculo do coeficiente de Pearson 
## e do intervalo de confiança de Pearson.
pearsonr_ci <- function(x, y, alpha = 0.05) {
  r <- cor(x, y)
  p <- cor.test(x, y)$p.value
  r_z <- tanh(r)
  se <- 1 / sqrt(length(x) - 3)
  z <- qnorm(1 - alpha / 2)
  lo_z <- r_z - z * se
  hi_z <- r_z + z * se

arkanister

"""
@author: arkanister;
"""

def cache_it(method=None, name=None):
    """
    Decorator to cache a function result in the class.

    Using this is expected that the function can only be called once by instance,
    which means that the second time the function is called, the cached result

arkanister

# coding: utf-8
"""
This is an interface for simplify the django queryset handler 
when we need to apply a filter on it.

Usage:

>>> from core import models
>>> from filters import FilterableQuerysetMixin, SimpleFilter, SimpleSearchFilter
>>> 

arkanister

const express = require('express');

const { MyModel } = require('../models/index');
const { paginate } = require('./pagination');

const router = express.Router();


router.get('/', async (request, response) => {

arkanister

def singleton(kls):
    """
    A decorator to grant that only a single class 
    instance will be created.
    
    Usage:
    >>> @singleton
    >>> class MyCustomClass:
    >>>     ... do something ...
    >>>