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  min_query_delay_seconds = 90
  url = 'https://flightaware.com/live/flight/' + flight_number

  global last_query_time
  seconds_since_last_query = time.time() - last_query_time
  if last_query_time and seconds_since_last_query < min_query_delay_seconds:
    error_msg = (
        'Unable to query FA for %s at %s since last query to FA was only'
        ' %d seconds ago; min of %d seconds needed: %s' % (
            flight_number,
            EpochDisplayTime(time.time(), format_string='%H:%M:%S'),
            seconds_since_last_query, min_query_delay_seconds, url))
    return '', error_msg, time.time()

  last_query_time = time.time()

  try:
    response = requests.get(url, timeout=5)
    query_time = time.time()
  except requests.exceptions.RequestException as e:

    error_msg = 'Unable to query FA for URL due to %s: %s' % (e, url)
    return '', error_msg, query_time

  soup = bs4.BeautifulSoup(response.text, 'html.parser')
  l = soup.find_all('script')
  flight_script = None
  for script in l:
    if 'trackpollBootstrap' in str(script):
      flight_script = str(script)
      break
  if not flight_script:
    error_msg = (
        'Unable to find trackpollBootstrap script in page: ' + response.text)
    Log(error_msg)
    return '', error_msg, query_time
  first_open_curly_brace = flight_script.find('{')
  last_close_curly_brace = flight_script.rfind('}')
  flight_json = flight_script[first_open_curly_brace:last_close_curly_brace+1]
  return flight_json, '', query_time





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  min_query_delay_seconds = 90
  url = 'https://flightaware.com/live/flight/' + flight_number

  global last_query_time
  seconds_since_last_query = time.time() - last_query_time
  if last_query_time and seconds_since_last_query < min_query_delay_seconds:
    error_msg = (
        'Unable to query FA for %s at %s since last query to FA was only'
        ' %d seconds ago; min of %d seconds needed: %s' % (
            flight_number,
            EpochDisplayTime(time.time(), format_string='%H:%M:%S'),
            seconds_since_last_query, min_query_delay_seconds, url))
    return '', error_msg, time.time()

  last_query_time = time.time()

  try:
    response = requests.get(url, timeout=5)
    query_time = time.time()
  except requests.exceptions.RequestException as e:
    query_time = time.time()  # did not get to the query_time assignment above
    error_msg = 'Unable to query FA for URL due to %s: %s' % (e, url)
    return '', error_msg, query_time

  soup = bs4.BeautifulSoup(response.text, 'html.parser')
  l = soup.find_all('script')
  flight_script = None
  for script in l:
    if 'trackpollBootstrap' in str(script):
      flight_script = str(script)
      break
  if not flight_script:
    error_msg = (
        'Unable to find trackpollBootstrap script in page: ' + response.text)
    Log(error_msg)
    return '', error_msg, query_time
  first_open_curly_brace = flight_script.find('{')
  last_close_curly_brace = flight_script.rfind('}')
  flight_json = flight_script[first_open_curly_brace:last_close_curly_brace+1]
  return flight_json, '', query_time





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