Ensure

def get_exp_list_from_file(filename)
    begin
      if @exp_file_error
        return
      end
      f = File.open(filename)
      list = f.readlines
      list = correct_malformed_input(list)
      if @exp_file_error
        return
      end
      for i in 0..list.size - 1
        list[i] = list[i].to_i
      end
      list = correct_erroneous_data(list)
      for i in list.size..100
        list[i] = 0
      end
      list.unshift(0)
      @exp_list = list
      rescue StandardError
        s1 = "Unrecoverable error while reading " + @name + "'s EXP list.\n"
        s2 = "Experience curve declared in the database will be used instead."
        print(s1 + s2)
        @exp_file_error = true
        retry
      ensure
        if f != nil
          f.close
        end
      end
  end