Python Problem

[DavidLeslie]

I am trying to write a script that that changes the aliases of a table's fields, but when I ran it I got this code error:

ExecuteError: ERROR 001601: Failed to alter field alias.

Failed to execute (AlterField).

This makes no sense to me and I would love any input as to why this happened.

Also, here is my code that generated this error:

# Import geoprocessing
import arcpy


# Set workspace
arcpy.env.workspace = r'U:\newberry\new.gdb'


# Creates a list of fields from the Metadata_2010 table
fieldListTable = arcpy.ListFields("METADATA_2010")


# Creates a cursor - a data access object
rows = arcpy.SearchCursor("METADATA_2010")


# Creates an empty table to store row values
fullNames = []


# For loop thats iterates through the rows in
# the Full_Name field of the Metadata_2010 table
for row in rows:
    # Adds the row value to the fullNames list
    fullNames.append(row.getValue(fieldListTable[2].name))


# Creates a sliced list of fields from the census block group
# polygon feature class
fieldList = arcpy.ListFields("please")[2:630]


# For loop thats changes the existing alias name in the table
# to the name in the fullNames list
for i in range(len(fieldList)):
    arcpy.AlterField_management('please', str(fieldList.name),'',str(fullNames))

[DavidLeslie]

I did not use the descriptions from the metadata as field names, I used them as aliases. I'm guessing that replacing field names have some limitations on the length, where alias don't .

I've attached a picture of what a portion of my table looks like.

[Zeke]

Thanks. I may use this myself. I did write a script to delete the 'Margin of Error' fields. Not relevant for our uses, and they double the number of fields. My data wasn't joined to the polygon file, though, when I downloaded it. Relationship classes are there, but not actually working.