Created
July 7, 2016 12:29
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| %matplotlib inline | |
| import matplotlib.pyplot as plt | |
| import numpy as np | |
| import random | |
| def median(series): | |
| return sum(series)/len(series) | |
| class Beverage: | |
| def __init__(self, name, median_cost, upper, lower, start, step=50): | |
| self.name = name | |
| self.series = [] | |
| self.sold_at = [] | |
| self.median_cost = median_cost | |
| self.upper = upper | |
| self.lower = lower | |
| self.step = step | |
| self.set_new(start) | |
| @property | |
| def sum_sold(self): | |
| sold = 0 | |
| for volume, index in self.sold_at: | |
| sold += volume * self.series[index] | |
| return sold | |
| @property | |
| def sell_volume(self): | |
| total = 0 | |
| for volume, _ in self.sold_at: | |
| total += volume | |
| return total | |
| @property | |
| def profit(self): | |
| total = 0 | |
| for volume, index in self.sold_at: | |
| total += volume * (self.series[index] - self.median_cost) | |
| return total | |
| @property | |
| def current(self): | |
| return self.series[-1] | |
| def tick(self): | |
| current = self.current | |
| chance = 0.5 | |
| if self.profit < 1000: | |
| chance -= 0.1 | |
| if median(self.series) < self.median_cost: | |
| chance -= 0.05 | |
| elif median(self.series) > self.median_cost * 2: | |
| chance += 0.05 | |
| if self.upper * 0.9 < current: | |
| chance += 0.1 | |
| if self.lower * 1.2 > current: | |
| chance -= 0.1 | |
| up = random.uniform(0, 1) > chance | |
| change = random.randint(0, self.step) | |
| new = current + change if up else current - change | |
| # clip to range | |
| self.set_new(max(min(self.upper, new), self.lower)) | |
| def set_new(self, value): | |
| self.series.append(value) | |
| def notify_sell(self, volume): | |
| self.sold_at.append((volume, len(self.series) - 1)) | |
| # name, median, upper, lower, start | |
| beverages = [ | |
| Beverage("Holsten", 300, 1100, 150, 150), | |
| Beverage("Astra", 300, 1100, 100, 200) | |
| ] | |
| total_profit = [] | |
| volume = [] | |
| for i in range(700): | |
| if i % 10 == 0: | |
| selected = random.choice(beverages) | |
| selected.notify_sell(bev.upper // bev.current) | |
| volume.append(bev.upper // bev.current) | |
| else: | |
| volume.append(0) | |
| local_profit = 0 | |
| for bev in beverages: | |
| bev.tick() | |
| local_profit += bev.profit | |
| total_profit.append(local_profit) | |
| plt.figure(0) | |
| for bev in beverages: | |
| plt.plot(bev.series) | |
| print("Name: ", bev.name) | |
| print("Volume:", bev.sell_volume) | |
| print("Umsatz:", bev.sum_sold) | |
| print("Gewinn:", bev.profit) | |
| plt.ylabel('Price') | |
| #plt.figure(1) | |
| #plt.plot(total_profit) | |
| #plt.ylabel('Profit') | |
| plt.figure(2) | |
| plt.plot(volume) | |
| plt.ylabel('Volume') | |
| plt.show() |
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