old_contents: from datetime import datetime, timedelta
  
  from flask import current_app
  from notifications_utils.statsd_decorators import statsd
  
  from app import notify_celery
  from app.dao.fact_billing_dao import (
      fetch_billing_data_for_day,
      update_fact_billing
  )
  
  
  @notify_celery.task(name="create-nightly-billing")
  @statsd(namespace="tasks")
  def create_nightly_billing(day_start=None):
      # day_start is a datetime.date() object. e.g.
      # 3 days of data counting back from day_start is consolidated
      if day_start is None:
          day_start = datetime.today() - timedelta(days=1)
  
      for i in range(0, 3):
          process_day = day_start - timedelta(days=i)
  
          transit_data = fetch_billing_data_for_day(process_day=process_day)
  
          for data in transit_data:
              update_fact_billing(data, process_day)
  
      current_app.logger.info("create-nightly-billing task complete. {} rows updated".format(len(transit_data)))
  
new_contents: from datetime import datetime, timedelta
  
  from flask import current_app
  from notifications_utils.statsd_decorators import statsd
  
  from app import notify_celery
  from app.dao.fact_billing_dao import (
      fetch_billing_data_for_day,
      update_fact_billing
  )
  
  
  @notify_celery.task(name="create-nightly-billing")
  @statsd(namespace="tasks")
  def create_nightly_billing(day_start=None):
      # day_start is a datetime.date() object. e.g.
      # 3 days of data counting back from day_start is consolidated
      if day_start is None:
          day_start = datetime.today() - timedelta(days=1)
  
      for i in range(0, 3):
          process_day = day_start - timedelta(days=i)
  
          transit_data = fetch_billing_data_for_day(process_day=process_day)
  
          for data in transit_data:
              update_fact_billing(data, process_day)
  
          current_app.logger.info(
              "create-nightly-billing task complete. {} rows updated for day: {}".format(len(transit_data, process_day)))
  
subject: Fix the logging message in the nightly task