code: def write_th(self, s, header=False, indent=0, tags=None):
          
          if header and self.fmt.col_space is not None:
              tags = (tags or "")
              tags += ('style="min-width: {colspace};"'
                       .format(colspace=self.fmt.col_space))
  
          return self._write_cell(s, kind='th', indent=indent, tags=tags)
docs: Method for writting a formatted <th> cell.
  
          If col_space is set on the formatter then that is used for
          the value of min-width.
  
          Parameters
          ----------
          s : object
              The data to be written inside the cell.
          header : boolean, default False
              Set to True if the <th> is for use inside <thead>.  This will
              cause min-width to be set if there is one.
          indent : int, default 0
              The indentation level of the cell.
          tags : string, default None
              Tags to include in the cell.
  
          Returns
          -------
          A written <th> cell.