Assigning field value based on location without join - Two different feature layers

Question

I'm interested in updating a field in N-geodatabase feature classes based on their location to another feature class in the geodatabase, but without having to perform join.

I am new to Python, and have tried to use the similar answer to my question in : Assigning field value based on location without join

I have a feature layer "zone - M" and a feature layer "Zone - Z", these features have a field called "name_M" and "name_Z". I will draw several others layers "on" these zones. These others layers have all a field "name_zone_M" and "name_zone_Z". I would like that if the layer is contained completely inside a zone, the value "name" of each zone get assigned to the field "name_zone_M" and "name_zone_Z". These feature class are all polygons.

I have tried the following code to try to get the first one right, and then to try to loop inside the others layers, but I did not succeed.

Any toughts?

import arcpy
# Set overwrite option
arcpy.env.overwriteOutput = True
# KEEPING ORIGINAL LAYERS (NOT CREATING ADDITIONAL "JOINED" LAYER)
# Create FeatureLayers
arcpy.MakeFeatureLayer_management(r"Zone-M")
arcpy.MakeFeatureLayer_management(r"DRAW1")
# Create a search cursor for the states
rows = arcpy.SearchCursor(r"Zone-M")
for row in rows:
 # What you'll do is select each neighborhood one at a time, and then select all the parcels in that neighborhood and calculate the SITE_CODE field
 # NOTE: If you are using not using shapefiles, then you'll have to change the FID in the line below to OBJECTID (or similar)
 arcpy.SelectLayerByAttribute_management(r"Zone-M", "NEW_SELECTION", "\"FID\" = " + str(row.getValue("FID")))
 arcpy.SelectLayerByLocation_management(r"DRAW1", "COMPLETELY_CONTAINS", r"Zone-M", "", "NEW_SELECTION")
 arcpy.CalculateField_management(r"DRAW1", "name_zone_M", "'{0}'".format(str(row.getValue("name_M"))), "PYTHON_9.3", "")
 print "Finished processing " + str(row.getValue("name_M")) 

• Son of a Beach: Please explain what you mean by, "did not succeed". Post full text of any errors. Or if nothing at all happened, post that. If something unexpected happened, what was it?
• Son of a Beach: Why do you wish to avoid a join? This is what joins are for.
• CAM: Thanks for your repply. Nothing happened. I am trying to avoid join because I got the "join" function to work, but I couldn't get the "Spatial Relationship If, else" to work... Also, I have a lot of different feature classes, it seemed that it would be a lot of work to join each single one.