ListFields

Zusammenfassung

Returns a list of fields in a feature class, shapefile, or table in a specified dataset. The returned list can be limited with search criteria for name and field type and will contain field objects.

Syntax

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

Parameter	Erläuterung	Datentyp
dataset	The specified feature class or table with the fields to be returned.	String
wild_card	Limits the results returned. If a value is not specified, all values are returned. The wildcard is not case sensitive. Symbol Description Example * Represents zero or more characters. Te* finds Tennessee and Texas. (Der Standardwert ist None)	String
field_type	The specified field type to be returned. The following are valid field types:: All — All field types are returned. This is the default. BLOB —Only field types of BLOB are returned. Date —Only field types of Date are returned. Double —Only field types of Double are returned. Geometry —Only field types of Geometry are returned. GlobalID —Only field types of GlobalID are returned. GUID —Only field types of GUID are returned. Integer —Only field types of Integer are returned. OID —Only field types of OID are returned. Raster —Only field types of Raster are returned. Single —Only field types of Single are returned. SmallInteger —Only field types of SmallInteger are returned. String —Only field types of String are returned. (Der Standardwert ist All)	String

Rückgabewert

Datentyp	Erläuterung
Field	A list containing Field objects is returned.

Codebeispiel

ListFields example

List field properties.

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("{0} is a type of {1} with a length of {2}"
          .format(field.name, field.type, field.length))

ListFields example 2

Generate a list of field names.

import arcpy

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