Comparing fields from two Feature Classes.

Hi, and thank you for taking your time to look at my post. I am new to Python(I was in a class at this time a week ago). I am looking for a Python function(?) to compare a field in two seperate feature classes. arcpy.SelectLayerByAttribute_management looks close to what I am looking for, but I do not think it will work for my use. I cannot join the layers.

Here is my scenario. I have an address feature class and street feature class, the address feature class has a field that is tied to the street the address is located. So all addresses on Main St. have a StreetID field, the number in the StreetID field should match the ID field of Main St. in the Street feature class.

I want to create a new layer/feature class of the Addresses where the StreetID in Addresses does not match the ID of the street in Streets.

In VB.net I had it looping through the streets, searching the addresses that matched the street name (street, city, state, zip) and then comparing the StreetID - ID fields, writing errors to a selection set then creating the layer.

In my brief experience with arcpy I would think there is a funtion that allow me to do that.

Not looking for code, just wanting to find out if there is a function I can work with.

Thanks, Dale