#获得唯一值 by gisoracle

def getuniqueValue(inTable,inField):

    rows = arcpy.da.SearchCursor(inTable,[inField])

    # Create an empty list

    uniqueList = []

    try:

        for row in rows:

            v=row[0]

            # If the value is not already in the list, append it

            if v not in uniqueList:

                uniqueList.append(v)

        return uniqueList

    finally:

        if rows:

            del rows