code: def date(self, col: str, **kwargs):
          
          try:
              self.df[col] = pd.to_datetime(self.df[col], **kwargs)
          except Exception as e:
              self.err(e, "Can not convert to date")
docs: Convert a column to date type
  
          :param col: column name
          :type col: str
          :param \*\*kwargs: keyword arguments for ``pd.to_datetime`` 
          :type \*\*kwargs: optional
  
          :example: ``ds.date("mycol")``