old_contents: from datetime import datetime
  from os.path import expanduser
  
  class Clock():
  
      def __init__(self, label, user=None):
          self.start = datetime.now()
          self.label = label
          self.user = user
  
      def stop(self, fresh=False, user=None):
          end = datetime.now()
          with open(expanduser('~/MetricsTime'), 'a') as f:
              flag = ' fresh-account' if fresh else ''
              f.write('{} {:.5f} {} {}\n'.format((self.user or user or 'Unknown'), (end - self.start).total_seconds(), self.label, flag))
  
new_contents: from datetime import datetime
  from os.path import expanduser
  
  
  class Clock():
  
      def __init__(self, label, user=None):
          self.start = datetime.now()
          self.label = label
          self.user = user
  
      def stop(self, fresh=False, user=None):
          end = datetime.now()
          with open(expanduser('~/MetricsTime'), 'a') as f:
              flag = ' fresh-account' if fresh else ''
              f.write('{} {:.5f} {} {}\n'.format((self.user or user or 'Unknown'), (end - self.start).total_seconds(), self.label, flag))
  
subject: fix pep8