arcgis python 列出一个表所有字段

import arcpy

inFeature = arcpy.GetParameterAsText(0) #原始数据
try:
    fieldList = arcpy.ListFields(inFeature)
    for field in fieldList:
        arcpy.AddMessage("{0} is a type of {1} with a length of {2}"
        .format(field.name, field.type, field.length))

except Exception,e:
    print e.message();