old_contents: try:
      # python 2
      from ConfigParser import ConfigParser
      from StringIO import StringIO
  except ImportError:
      # python 3
      from configparser import ConfigParser
      from io import StringIO
  
  
  class WZConfigParser(ConfigParser):
      """
      Extended ConfigParser
      Add handling space comments started from spaces.
      Save ini files on ini :)
      """
  
      def optionxform(self, optionstr):
          """default implementation makes it lowercase"""
          return optionstr
  
      def load(self, path):
          with open(path) as f:
              lines = f.readlines()
          is_header = True
          self.header = []
          new_lines = []
          for original_line in lines:
              line = original_line.strip()
              if line:
                  if is_header:
                      if line.startswith(';'):
                          self.header.append(original_line.rstrip())
                      else:
                          is_header = False
                  new_lines.append(line)
          fp = StringIO('\n'.join(new_lines))
          self.read_file(fp)
  
      def save(self, fp):
          if self.header:
              fp.write('\n'.join(self.header))
              fp.write('\n')
          self.write(fp)
new_contents: try:
      # python 2
      from ConfigParser import ConfigParser
      from StringIO import StringIO
  except ImportError:
      # python 3
      from configparser import ConfigParser
      from io import StringIO
  
  
  class WZConfigParser(ConfigParser):
      """
      Extended ConfigParser
      Add handling space comments started from spaces.
      Save ini files on ini :)
      """
  
      def optionxform(self, optionstr):
          """default implementation makes it lowercase"""
          return optionstr
  
      def load(self, path):
          with open(path) as f:
              lines = f.readlines()
          is_header = True
          self.header = []
          new_lines = []
          for original_line in lines:
              line = original_line.strip()
              if line:
                  if is_header:
                      if line.startswith(';'):
                          self.header.append(original_line.rstrip())
                      else:
                          is_header = False
                  new_lines.append(line)
          fp = StringIO('\n'.join(new_lines))
          if hasattr(self, 'read_file'):
              self.read_file(fp)  # python 3.3
          else:
              self.readfp(fp)     # python 2.7
  
      def save(self, fp):
          if self.header:
              fp.write('\n'.join(self.header))
              fp.write('\n')
          self.write(fp)
subject: fix config parser to work with python 2.7