Field

Récapitulatif

The field object represents a column in a table. A field has many properties, the most obvious ones being its name and its type.

Discussion

Field properties can be accessed through the ListFields and Describe functions.

Updating a field property only updates the field object, no changes are made to the actual field in the table or feature class.

Syntaxe

Field ()

Propriétés

Propriété	Explication	Type de données
aliasName (Lecture et écriture)	The alias name of the field.	String
baseName (Lecture et écriture)	The unqualified field name.	String
domain (Lecture et écriture)	The name of the associated domain.	String
editable (Lecture et écriture)	The editable state: True if the field is editable.	Boolean
isNullable (Lecture et écriture)	The nullable state: True if the field allows null values.	Boolean
length (Lecture et écriture)	The field's length.	Integer
name (Lecture et écriture)	The name of the field.	String
precision (Lecture et écriture)	The precision of the field.	Integer
required (Lecture et écriture)	The required state: True if the field must contain a value.	Boolean
scale (Lecture et écriture)	The field's scale.	Integer
type (Lecture et écriture)	The field type: SmallInteger, Integer, Single, Double, String, Date, OID, Geometry, Blob.	String

Exemple de code

Field example

Display field properties for the specified feature class.

import arcpy

fc = "C:/Data/Counties.shp"

# Create a list of fields using the ListFields function
#
fields = arcpy.ListFields(fc)

# Iterate through the list of fields
#
for field in fields:
    # Print field properties
    #
    print("Field:       {0}".format(field.name))
    print("Alias:       {0}".format(field.aliasName))
    print("Type:        {0}".format(field.type))
    print("Is Editable: {0}".format(field.editable)) 
    print("Required:    {0}".format(field.required))
    print("Scale:       {0}".format(field.scale))
    print("Precision:   {0}".format(field.precision))