code: def head(self, obs=5):
          
          topts = dict(self.dsopts)
          topts['obs'] = obs
          code = "proc print data=" + self.libref + '.' + self.table + self.sas._dsopts(topts) + ";run;"
  
          if self.sas.nosub:
              print(code)
              return
  
          if self.results.upper() == 'PANDAS':
              code = "data _head ; set %s.%s %s; run;" % (self.libref, self.table, self.sas._dsopts(topts))
              return self._returnPD(code, '_head')
          else:
              ll = self._is_valid()
              if self.HTML:
                  if not ll:
                      ll = self.sas._io.submit(code)
                  if not self.sas.batch:
                      self.sas.DISPLAY(self.sas.HTML(ll['LST']))
                  else:
                      return ll
              else:
                  if not ll:
                      ll = self.sas._io.submit(code, "text")
                  if not self.sas.batch:
                      print(ll['LST'])
                  else:
                      return ll
docs: display the first n rows of a table
  
          :param obs: the number of rows of the table that you want to display. The default is 5
          :return: