arcgis python 获得表字段的唯一值

#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