code: def add_columns(t0, t1):
      
  
      for colname in t1.colnames:
          col = t1.columns[colname]
          if colname in t0.columns:
              continue
          new_col = Column(name=col.name, length=len(t0), dtype=col.dtype)  # ,
          # shape=col.shape)
          t0.add_column(new_col)
docs: Add columns of table t1 to table t0.