code: def strip_cols(self):
          
          cols = {}
          skipped = []
          for col in self.df.columns.values:
              try:
                  cols[col] = col.strip()
              except Exception:
                  skipped.append(str(col))
          self.df = self.df.rename(columns=cols)
          self.ok("White spaces removed in columns names")
          if len(skipped) > 0:
              self.info("Skipped columns", ','.join(
                  skipped), "while removing white spaces")
docs: Remove leading and trailing white spaces in columns names
  
          :example: ``ds.strip_cols()``