def __init__(self, item_dir = {}):
self._dir = item_dir
util._setAttrsFromDir(self, item_dir)
try:
self.details = ItemDetails(self.details)
except AttributeError:
pass
def __init__(self, listing_dir = {}):
self._dir = listing_dir
util._setAttrsFromDir(self, listing_dir)
self.buy_volume = 0
self.sell_volume = 0
self.max_buy = 0
self.min_sell = 99999999
self.mean_buy = 0
self.median_buy = 0
self.mode_buy = 0
self.mean_sell = 0
self.median_sell = 0
self.mode_sell = 0
self.margin = 0
self.volume_margin = 0
buy_objects = []
#enumerate buys.
for raw_buy in self.buys:
#Create a offer object for each one.
buy = Offer(raw_buy)
buy_objects.append(buy)
#Compute the max buy, rolling.
if buy.unit_price > self.max_buy:
self.max_buy = buy.unit_price
#Compute the first half of the mean, rolling.
self.mean_buy += buy.unit_price * buy.quantity
# TODO: an interesting thought would be deriving volume from listing count.
self.buy_volume += buy.quantity
self.buys = buy_objects
sell_objects = []
#Enumerate sells.
for raw_sell in self.sells:
#Create a offer object for each one.
sell = Offer(raw_sell)
sell_objects.append(sell)
#Compute the min sell, rolling.
if sell.unit_price < self.min_sell:
self.min_sell = sell.unit_price
#Compute the first half of the mean, rolling.
self.mean_sell += sell.unit_price * sell.quantity
self.sell_volume += sell.quantity
self.sells = sell_objects
#Calculate the second halves of the means now that we have all listings.
if self.sell_volume > 0:
self.mean_sell /= self.sell_volume
if self.buy_volume > 0:
self.mean_buy /= self.buy_volume
#TODO: Calculate the medians. remember that each listing has multiple quantity.
#Calculate the margin.
delta = self.min_sell - self.max_buy
fee = (self.min_sell - 1) * .15
self.margin = (delta - fee) / (self.max_buy + 1)
#Calculate volume margin
self.volume_margin = float("inf")
if self.sell_volume:
self.volume_margin = self.buy_volume / self.sell_volume
def __init__(self, offer_dir = {}):
self._dir = offer_dir
util._setAttrsFromDir(self, offer_dir)
def __init__(self, item_dir = {}):
self._dir = item_dir
util._setAttrsFromDir(self, item_dir)
