code: def read(self, template, find=False, begin=1):
          
          result = []
          self.matched = False
          for sheet in self.get_sheet():
              r = template.get_data(sheet, find=find, begin=begin)
              if r is not None: #not matched
                  self.matched = True
                  if self.merge:
                      self.merge.add(r)
                      result = self.merge.result
                  else:
                      result.extend(r)
          return result
docs: :param find: 是否使用find模式.True为递归查找.缺省为False
          :param begin: 开始行号. 缺省为 1