from django.utils import timezone
import random


def take(coll, n):
    chunk = coll[0:n]
    del coll[0:n]
    return chunk


def take_random(coll, n):
    if n == 0:
        return []
    
    chunk = _.sample(coll, n)
    
    for item in chunk:
        coll.remove(item)
    
    return chunk


def take_one_random(coll):
    if len(coll) == 0:
        return None
    
    return coll.pop(_.random(0, len(coll)-1))


def random_phone():
    return '+7' + str(_.sample((917, 964, 965, 987, 912, 935))) + str(_.random(1000000, 9999999))


def random_date():
    return timezone.datetime(_.random(2012, 2018), _.random(1, 12), _.random(1, 28))


def random_amount():
    return random.random() * random.choice((100, 1000, 10000))