new_contents: #!/usr/bin/env python
  # filename: progbar.py
  
  
  #
  # Copyright (c) 2015 Bryan Briney
  # License: The MIT license (http://opensource.org/licenses/MIT)
  #
  # Permission is hereby granted, free of charge, to any person obtaining a copy of this software
  # and associated documentation files (the "Software"), to deal in the Software without restriction,
  # including without limitation the rights to use, copy, modify, merge, publish, distribute,
  # sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
  # furnished to do so, subject to the following conditions:
  #
  # The above copyright notice and this permission notice shall be included in all copies or
  # substantial portions of the Software.
  #
  # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
  # BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
  # DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  #
  
  
  from __future__ import print_function
  
  import sys
  from datetime import datetime
  
  
  def progress_bar(finished, total, start_time=None):
  	pct = int(100. * finished / total)
  	ticks = pct / 2
  	spaces = 50 - ticks
  	if start_time is not None:
  		elapsed = (datetime.now() - start_time).seconds
  		minutes = elapsed / 60
  		seconds = elapsed % 60
  		minute_str = '0' * (2 - len(str(minutes))) + str(minutes)
  		second_str = '0' * (2 - len(str(seconds))) + str(seconds)
  		prog_bar = '\r({}/{}) |{}{}|  {}% ({}:{})'.format(finished, total,
  			'|' * ticks, ' ' * spaces, pct, minute_str, second_str)
  	else:
  		prog_bar = '\r({}/{}) |{}{}|  {}%  '.format(finished, total,
  			'|' * ticks, ' ' * spaces, pct)
  	sys.stdout.write(prog_bar)
  	sys.stdout.flush()
  
subject: add progber