my_delorean.py

import delorean
import parse
from decimal import Decimal
class PriceLog(object):
  def __init__(self, timestamp, product_id, price):
    self.timestamp = timestamp
    self.product_id = product_id
    self.price = price
  def __repr__(self):
    return '<PriceLog ({}, {}, {})>'.format(self.timestamp,
                                            self.product_id,
                                            self.price)
  @classmethod
  def parse(cls, text_log):
    '''
    Parse from a text log with the format
    [<Timestamp>] - SALE - PRODUCT: <product id> - PRICE: $<price>
    to a PriceLog object
    '''
    divide_it = text_log.split(' - ')
    tmp_string, _, product_string, price_string = divide_it
    timestamp = delorean.parse(tmp_string.strip('[]'))
    product_id = int(product_string.split(':')[-1])
    price = Decimal(price_string.split('$')[-1])
    return cls(timestamp=timestamp, product_id=product_id, price=price)

  # test code
log = '[2018-05-05T11:07:12.267897] - SALE - PRODUCT: 1345 - PRICE: $09.99'
PriceLog.parse(log)