code: def get_filetypes2wildcards(filetypes):
      
  
      def is_available(filetype):
          return filetype not in FILETYPE_AVAILABILITY or \
                 FILETYPE_AVAILABILITY[filetype]
  
      available_filetypes = filter(is_available, filetypes)
  
      return OrderedDict((ft, FILETYPE2WILDCARD[ft])
                         for ft in available_filetypes)
docs: Returns OrderedDict of filetypes to wildcards
  
      The filetypes that are provided in the filetypes parameter are checked for
      availability. Only available filetypes are inluded in the return ODict.
  
      Parameters
      ----------
      filetypes: Iterable of strings
      \tFiletype list