code: def write_fundamental(self, keyTimeValueDict):
          ''' write fundamental '''
          if self.first:
              Base.metadata.create_all(self.__getEngine(), checkfirst=True)
              self.first=False
  
          sqls=self._fundamentalToSqls(keyTimeValueDict)
          session=self.Session()
          try:
              session.add_all(sqls)
          finally:
              self.Session.remove(f write_fundamental(self, keyTimeValueDict):
          ''' write fundamental '''
          if self.first:
              Base.metadata.create_all(self.__getEngine(), checkfirst=True)
              self.first=False
  
          sqls=self._fundamentalToSqls(keyTimeValueDict)
          session=self.Session()
          try:
              session.add_all(sqls)
          finally:
              self.Session.remove()
docs: write fundamental