old_contents: # Copyright (c) 2015 Jörg Thalheim (Mic92)
  #
  # 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 division
  from libqtile.widget import base
  
  
  def get_meminfo():
      val = {}
      with open('/proc/meminfo') as file:
          for line in file:
              key, tail = line.split(':')
              uv = tail.split()
              val[key] = int(uv[0]) // 1000
      val['MemUsed'] = val['MemTotal'] - val['MemFree']
      return val
  
  
  class Memory(base.InLoopPollText):
      """Displays memory usage."""
      orientations = base.ORIENTATION_HORIZONTAL
      defaults = [
          ("fmt", "{MemUsed}M/{MemTotal}M", "see /proc/meminfo for field names")
      ]
  
      def __init__(self, **config):
          super(Memory, self).__init__(**config)
          self.add_defaults(Memory.defaults)
  
      def poll(self):
          return self.fmt.format(**get_meminfo())
  
new_contents: # -*- coding: utf-8 -*-
  # Copyright (c) 2015 Jörg Thalheim (Mic92)
  #
  # 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 division
  from libqtile.widget import base
  
  
  def get_meminfo():
      val = {}
      with open('/proc/meminfo') as file:
          for line in file:
              key, tail = line.split(':')
              uv = tail.split()
              val[key] = int(uv[0]) // 1000
      val['MemUsed'] = val['MemTotal'] - val['MemFree']
      return val
  
  
  class Memory(base.InLoopPollText):
      """Displays memory usage."""
      orientations = base.ORIENTATION_HORIZONTAL
      defaults = [
          ("fmt", "{MemUsed}M/{MemTotal}M", "see /proc/meminfo for field names")
      ]
  
      def __init__(self, **config):
          super(Memory, self).__init__(**config)
          self.add_defaults(Memory.defaults)
  
      def poll(self):
          return self.fmt.format(**get_meminfo())
  
subject: Add utf-8 encoding to memory.py