tymofij

# creates a spiral of numbers in a matrix NxN

from copy import copy

def vortex(n):
    i = 1
    row = [0] * n
    matrix = [copy(row) for _ in range(n)]

    pos_row = 0

tymofij

President of Ukraine Avtodiy Dormidontovych Kromyeshnyy was crazy.
That means he wasn`t inadequate fool - but persistent paranoid.
It is as nothing had harmed if a potential fad of variatsko`s hospital A.D. Kromyeshnoho not suffered all Ukraine.

Immediatly after the inauguration of President-elect, then more or less mentally healthy person, according to tradition, decided to find out about his future.
For this he turned not to the astrologers, not to diviners, not the wizards, as did his predecessors, and - to fashion a professor of occult sciences, a magician and mystic, linguist and Bible scholars, Playboy and Player A. Cop-Aum.
The professor at that time was relatively young, irresponsible and for laughing predicted newly elected for A.D.Kromyeshnom long and happy Presidency, but warned of jewelry made of gold, they hiding death for Kromyeshniy.

Since that moment the President went crazy.
First, he ordered to everyone of his surroundings, begining with office chief and ending with maid, immediately to ge

tymofij

from math import log, e, copysign

def div(x, y):
    """ divide x by y without using / operator
    """
    sign = x * y
    res = e ** (log(abs(x)) - log(abs(y)))
    res = copysign(res, sign)
    rounded = int(round(res))
    if rounded * y == x:

tymofij

# make port available for your main machine
vagrant halt
# edit Vagrantfile, to line 72 (near other port forwarding stuff) add:
`  config.vm.network :forwarded_port, guest: 8120, host: 8120`
vagrant up

# installing and starting API service
sudo su edxapp
pip install virtualenvwrapper
source virtualenvwrapper.sh

tymofij

import math

def cube_root(x):
    # negative number cannot be raised to a fractional power
    res = math.copysign(abs(x) ** (1.0/3), x)
    # 64 ** (1/3.0) gives us 3.9999999999999996
    # and it breaks things up pretty bad. let's try finding int one
    rounded_res = int(round(res))
    if rounded_res ** 3 == x:
        res = rounded_res

tymofij

# https://codility.com/demo/take-sample-test/array_inversion_count
import bisect

def solution(A):
    """ computes the number of inversions in A, or returns -1 if it exceeds 1,000,000,000
    """
    # the idea is to store elements left of n-th sorted,
    # which would allow us to easily find the number of them greater than n-th.
    sorted_left = []
    res = 0

tymofij

#!/usr/bin/env python

from datetime import date, timedelta
import urllib, os

day = date(2000,1,17) # the first day

while day <= date.today():
    name = day.strftime("%Y-%m-%d") + '.gif'
    if not os.path.isfile(name):

tymofij

from operator import attrgetter
from django.db import models

class DiligentQuerySet(models.query.QuerySet):
    """
    Represents a QuerySet that allows filtering with lambdas,
    and sorting on object properties.
    """
    def __init__(self, *args, **kwargs):
        self._custom_filters = []