old_contents: # pylint: disable=C0111,R0903
  
  """Displays sensor temperature
  
  Requires the following executable:
      * sensors
  
  Parameters:
      * sensors.match: Line to match against output of 'sensors -u' (default: temp1_input)
      * sensors.match_number: which of the matches you want (default -1: last match).
  """
  
  import re
  import decimal
  
  from subprocess import call
  
  import bumblebee.input
  import bumblebee.output
  import bumblebee.engine
  
  class Module(bumblebee.engine.Module):
      def __init__(self, engine, config):
          super(Module, self).__init__(engine, config,
                                       bumblebee.output.Widget(full_text=self.temperature))
          self._temperature = "unknown"
          pattern = self.parameter("match", "temp1_input")
          pattern_string = r"^\s*{}:\s*([\d.]+)$".format(pattern)
          self._match_number = int(self.parameter("match_number", "-1"))
          self._pattern = re.compile(pattern_string, re.MULTILINE)
          engine.input.register_callback(self, button=bumblebee.input.LEFT_MOUSE, cmd="xsensors")
  
      def get_temp(self):
          temperatures = bumblebee.util.execute("sensors -u")
          matching_temp = self._pattern.findall(temperatures)
          temperature = "unknown"
          if matching_temp:
              temperature = int(float(matching_temp[self._match_number]))
  
          return temperature
  
      def get_mhz( self ):
          output = open( '/proc/cpuinfo' ).read()
          m      = re.search( r"cpu MHz\s+:\s+(\d+)", output )
          mhz    = int( m.group( 1 ) )
  
          if mhz < 1000:
              return "{} MHz".format( mhz )
          else:
              return "%.1f GHz" % ( decimal.Decimal( mhz ) / 1000 )
  
      def temperature(self, _):
          return u"{}°c @ {}".format( self._temperature, self._mhz )
  
      def update(self, widgets):
          self._temperature = self.get_temp()
          self._mhz = self.get_mhz()
  
  # vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4
  
new_contents: # -*- coding: UTF-8 -*-
  # pylint: disable=C0111,R0903
  
  """Displays sensor temperature
  
  Requires the following executable:
      * sensors
  
  Parameters:
      * sensors.match: Line to match against output of 'sensors -u' (default: temp1_input)
      * sensors.match_number: which of the matches you want (default -1: last match).
  """
  
  import re
  
  import bumblebee.input
  import bumblebee.output
  import bumblebee.engine
  
  class Module(bumblebee.engine.Module):
      def __init__(self, engine, config):
          super(Module, self).__init__(engine, config,
                                       bumblebee.output.Widget(full_text=self.temperature))
          self._temperature = "unknown"
          self._mhz = "n/a"
          pattern = self.parameter("match", "temp1_input")
          pattern_string = r"^\s*{}:\s*([\d.]+)$".format(pattern)
          self._match_number = int(self.parameter("match_number", "-1"))
          self._pattern = re.compile(pattern_string, re.MULTILINE)
          engine.input.register_callback(self, button=bumblebee.input.LEFT_MOUSE, cmd="xsensors")
  
      def get_temp(self):
          temperatures = bumblebee.util.execute("sensors -u")
          matching_temp = self._pattern.findall(temperatures)
          temperature = "unknown"
          if matching_temp:
              temperature = int(float(matching_temp[self._match_number]))
  
          return temperature
  
      def get_mhz( self ):
          output = open("/proc/cpuinfo").read()
          m      = re.search(r"cpu MHz\s+:\s+(\d+)", output)
          mhz    = int(m.group(1))
  
          if mhz < 1000:
              return "{} MHz".format(mhz)
          else:
              return "{:0.01f} GHz".format(float(mhz)/1000.0)
  
      def temperature(self, _):
          return u"{}°c @ {}".format(self._temperature, self._mhz)
  
      def update(self, widgets):
          self._temperature = self.get_temp()
          self._mhz = self.get_mhz()
  
  # vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4
  
subject: Remove unused imports and minor reformatting