difficulty.py

from collections import deque
import math
import itertools

bccHashRatio = 0.25

checkpoints = [30, 60, 2*60, 24*60]


def fmtTime(time):
    time = math.floor(time)
    out = str(math.floor(time / 24 / 60))
    time = time % (24 * 60)
    out += "\t"
    out += str(math.floor(time / 60))
    out += ":"
    time = time % 60
    if time < 10:
        out += "0"
    out += str(time)
    return out


time = 0
currentTime = 10 / bccHashRatio
blocksUntilAdjustment = 1400
pastBlockTimes = deque(itertools.repeat(10, 2022))
while True:
    pastBlockTimes.popleft()
    pastBlockTimes.append(currentTime)
    blocksUntilAdjustment -= 1
    while len(checkpoints):
        if currentTime < checkpoints[-1]:
            print(str(checkpoints.pop()) + ":\t" + str(fmtTime(time)))
        else:
            break
    if len(checkpoints) == 0:
        break
    time += currentTime
    if blocksUntilAdjustment == 0:
        blocksUntilAdjustment = 2016
        adj = max(20160 / sum(pastBlockTimes[n] for n in range(2016)), 0.25)
        currentTime *= adj
    elif sum(pastBlockTimes[n] for n in range(2004, 2010)) > 12*60:
        currentTime *= 0.8