code: def get_file(self,pattern):
          '''
          returns a flag array of the data loaded from a given file pattern
          
          :parameter pattern: pattern to match in the file list. 
          '''
          flag=[fnmatch.fnmatch(l,pattern) for l in self.filelist]
          id=self.fid_list.compress(flag)
          flag = self.fileid == id
          return flaf get_file(self,pattern):
          '''
          returns a flag array of the data loaded from a given file pattern
          
          :parameter pattern: pattern to match in the file list. 
          '''
          flag=[fnmatch.fnmatch(l,pattern) for l in self.filelist]
          id=self.fid_list.compress(flag)
          flag = self.fileid == id
          return flag
docs: returns a flag array of the data loaded from a given file pattern
          
          :parameter pattern: pattern to match in the file list.