ListFields

摘要

可返回指定数据集中的要素类、shapefile 或表中的字段的列表。 返回的列表可用针对名称和字段类型的搜索条件进行限制，并将包含 Field 对象。

语法

ListFields (dataset, {wild_card}, {field_type})

参数	说明	数据类型
dataset	The specified feature class or table with the fields to be returned.	String
wild_card	限制返回的结果。如果未指定某一值，则返回所有值。通配符不区分大小写。 符号 说明 示例 * 表示零个或多个字符。 Te* 可找到田纳西州和德克萨斯州。 (默认值为 None)	String
field_type	Specifies the field type that will be returned. All— All field types are returned. This is the default. Blob—Fields of Blob type are returned. BigInteger—Fields of Big Integer type are returned. Date—Fields of Date type are returned. DateOnly—Fields of Date Only type are returned. Double—Fields of Double type are returned. Geometry—Fields of Geometry type are returned. GlobalID—Fields of Global ID type are returned. Guid—Fields of GUID type are returned. Integer—Fields of Integer type are returned. OID—Fields of Object ID type are returned. Raster—Fields of Raster type are returned. Single—Fields of Single type are returned. SmallInteger—Fields of Small Integer type are returned. String—Fields of String type are returned. TimeOnly—Fields of Time Only type are returned. TimestampOffset—Fields of Timestamp Offset type are returned. (默认值为 All)	String

返回值

数据类型	说明
Field	返回包含 Field 对象的列表。

代码示例

ListFields 示例

列出字段属性。

import arcpy

# For each field in the Hospitals feature class, print
# the field name, type, and length.
fields = arcpy.ListFields("c:/data/municipal.gdb/hospitals")

for field in fields:
    print(f"{field.name} has a type of {field.type} with a length of {field.length}")

ListFields 示例 2

生成字段名称列表。

import arcpy

featureclass = "c:/data/municipal.gdb/hospitals"
field_names = [f.name for f in arcpy.ListFields(featureclass)]