random sampling

# number of comics read per week
READ_COMICS = 400

# number of comics released per week
RELEASED_COMICS = 3

START = 1700
END = 2140
import random
import matplotlib
matplotlib.use('agg')
from matplotlib import pyplot as plt

def get_week(start=START, count_dict={}):
    if start < END:
        sample = random.sample(range(1, start), READ_COMICS)
        for index in sample:
            count = count_dict.get(index, 0)
            count_dict.update({index: count + 1})
        start += RELEASED_COMICS
        get_week(start, count_dict)
    return count_dict


def draw_graph(count={}):
    plt.xkcd()
    plt.figure(figsize=(12,6), dpi=100)
    plt.scatter(count.keys(), count.values())
    plt.savefig('graph.png')

counts_per_comic = get_week()
draw_graph(counts_per_comic)