old_contents: import re
  import time
  
  from datetime import date, timedelta
  
  
  def get_ticker_from_link(link):
      m = re.search(r"\d{3,}", link)
      return m.group(0)
  
  
  def str2int(to_convert):
      if not to_convert:  # empty string
          return 0
      num = 0
      try:
          int(to_convert.replace(" ", ""))
      except ValueError:
          pass  # TODO: log exception
      return num
  
  
  def str2float(to_convert):
      if not to_convert:  # empty string
          return 0
  
      stripped = to_convert.replace(" ", "")
      if stripped.find(",") > 0:
          stripped = stripped.replace(",", ".")
      num = 0
      try:
          num = float(stripped)
      except ValueError:
          pass  # TODO: log exception
      return num
  
  
  def shift_day(day_str, day_delta):
      day_elem = day_str.parse(".")
      day = date(day_elem[2], day_elem[1], day_elem[0])
      day_shifted = day + timeshift(days=day_delta)
      return "%i.%i.%i" % (day_shifted.day, day_shifted.month, day_shifted.year)
  
  
  def shift_today(day_delta):
      day_shifted = date.today() + timedelta(days=day_delta)
      return "%i.%i.%i" % (day_shifted.day, day_shifted.month, day_shifted.year)
  
  
  def sleep(seconds):
      print("Sleeping for %i seconds" % seconds)
      time.sleep(seconds)
  
  
  def sort_requests_by_amount(requests, reverse=True):
      return sorted(requests, key=lambda request: request.amount, reverse=reverse)
  
  
  def sort_requests_by_price(requests, reverse=True):
      return sorted(requests, key=lambda request: request.price, reverse=reverse)
  
  
  def get_sell_requests(requests):
      return filter(lambda req: req.req_type == BrokerRequest.SELL, requests)
  
  
  def get_buy_requests(requests):
      return filter(lambda req: req.req_type == BrokerRequest.BUY, requests)
  
new_contents: import re
  import time
  
  from datetime import date, timedelta
  
  
  def get_ticker_from_link(link):
      m = re.search(r"\d{3,}", link)
      return m.group(0)
  
  
  def str2int(to_convert):
      if not to_convert:  # empty string
          return 0
      num = 0
      try:
          int(to_convert.replace(" ", ""))
      except ValueError:
          pass  # TODO: log exception
      return num
  
  
  def str2float(to_convert):
      if not to_convert:  # empty string
          return 0
  
      stripped = to_convert.replace(" ", "")
      if stripped.find(",") > 0:
          stripped = stripped.replace(",", ".")
      num = 0
      try:
          num = float(stripped)
      except ValueError:
          pass  # TODO: log exception
      return num
  
  
  def shift_today(day_delta):
      day_shifted = date.today() + timedelta(days=day_delta)
      return "%i.%i.%i" % (day_shifted.day, day_shifted.month, day_shifted.year)
  
  
  def sleep(seconds):
      print("Sleeping for %i seconds" % seconds)
      time.sleep(seconds)
  
  
  def sort_requests_by_amount(requests, reverse=True):
      return sorted(requests, key=lambda request: request.amount, reverse=reverse)
  
  
  def sort_requests_by_price(requests, reverse=True):
      return sorted(requests, key=lambda request: request.price, reverse=reverse)
  
subject: remove unused functions