Copy attribute values from one table to another, in a loop

I am trying to copy the attribute values from one table to another, inside a loop. I am looping through one table and inside that loop I want to copy the attribute values to another table. I have copied attribute values over before, but using JoinField, but I do not want to use that in this code, as I am already looping through records. I have seen different code attempting to do this, but so far nothing has worked for me. The code I'm working with is:

Code:

import arcpy

import os

import string

import subprocess



arcpy.env.workspace = r"c:\Users\matt\Desktop\Ditch\Database\Centerline.mdb"

assetFeatureClass = "[Assets]"

assetrows = arcpy.UpdateCursor(assetFeatureClass,"[Processed] <> 'Y'","","","")



# for each row in the result set

for row in assetrows:

        print row.getValue("Ditch_ID")



        #create asset

        #Insert code to call out ArcObjects utility...

        centerline = "[Pipeline_Centerline]"

        

        #update asset record attributes from asset table

        rows = arcpy.UpdateCursor(centerline)

        for row in rows:

                row.Ditch_ID = assetFeatureClass.Ditch_ID 

                rows.updateRow(row)

I get an error that states:

Code:

Runtime error 

Traceback (most recent call last):

  File "<string>", line 24, in <module>

AttributeError: 'str' object has no attribute 'Ditch_ID'

and I assume what is causing this is the row.Ditch_ID = assetFeatureClass.Ditch_ID section. What I am trying to do in this section is to copy to the current record in the Centerline table the 'Ditch_ID' attribute value from the outer loop's record in the Assets table. Also, I have to do this for several attributes (both tables have the same schema) and need to either iterate over the code for each, or somehow copy several attributes at once.