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jasongorman/daily_song_sales.py Secret

Last active October 4, 2019 06:47
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daily_song_sales.py
class DailySongSales(object):
def __init__(self, all_sales, charts):
self.all_sales = all_sales
self.charts = charts
def sales_of(self, song):
song_sales = len(list(filter(lambda sale: sale.song == song, self.all_sales)))
self.charts.send(song, song_sales)
return song_sales
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