old_contents: import yaml
  import logging
  import os
  
  def loadYaml(filename):
      with open(filename, 'r') as yaml_file:
          return yaml.load(yaml_file)
  
  def dumpYaml(filename, obj):
      with open(filename, 'w') as yaml_file:
          yaml.dump(obj, yaml_file, default_flow_style=False)
  
  def write(filename, content):
      with open(filename, 'w') as output_file:
          output_file.write(content)
  
  def new_logger(name, handler = logging.StreamHandler()):
      logger = logging.getLogger(name)
      logger.setLevel(logging.DEBUG)
      fmt = "%(asctime)-15s\t%(message)s"
      datefmt = "%Y-%m-%d %H:%M:%S"
      formatter = logging.Formatter(fmt=fmt, datefmt=datefmt)
      handler.setFormatter(formatter)
      if not logger.handlers:
          logger.addHandler(handler)
  
      return logger
  
  def new_log_file_handler(dbfile):
      (prefix, ext) =  os.path.splitext(dbfile)
      log_file = prefix + '.log'
      return logging.FileHandler(log_file)
  
  def human_size(num):
      for unit in ['','K','M','G','T','P','E','Z']:
          if abs(num) < 1024.0:
              return "%3.1f%sB" % (num, unit)
          num /= 1024.0
      return "%.1f%sB" % (num, 'Y')
  
  concat = lambda x, y: x + y
  
new_contents: import yaml
  import logging
  import os
  
  def loadYaml(filename):
      with open(filename, 'r') as yaml_file:
          return yaml.load(yaml_file)
  
  def dumpYaml(filename, obj):
      with open(filename, 'w') as yaml_file:
          yaml.dump(obj, yaml_file, default_flow_style=False)
  
  def write(filename, content):
      with open(filename, 'w') as output_file:
          output_file.write(content)
  
  def new_logger(name, handler = logging.StreamHandler()):
      logger = logging.getLogger(name)
      logger.setLevel(logging.DEBUG)
      fmt = "%(asctime)-15s\t%(message)s"
      datefmt = "%Y-%m-%d %H:%M:%S"
      formatter = logging.Formatter(fmt=fmt, datefmt=datefmt)
      handler.setFormatter(formatter)
      if not logger.handlers:
          logger.addHandler(handler)
  
      return logger
  
  def new_log_file_handler(dbfile):
      (prefix, ext) =  os.path.splitext(dbfile)
      log_file = prefix + '.log'
      return logging.FileHandler(log_file)
  
  def human_size(num):
      for unit in ['','K','M','G','T','P','E','Z']:
          if abs(num) < 1024.0:
              return "%3.1f %sB" % (num, unit)
          num /= 1024.0
      return "%.1f %sB" % (num, 'Y')
  
  concat = lambda x, y: x + y
  
subject: add space between num and unit