サマリ
The field object represents a column in a table. A field has many properties, the most obvious ones being its name and its type.
説明
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.
構文
Field ()
特性
| プロパティ | 説明 | データ タイプ |
| aliasName (読み書き) | The alias name of the field. | String |
| baseName (読み書き) | The unqualified field name. | String |
| defaultValue (読み書き) | The default value of the field. | Variant |
| domain (読み書き) | The name of the associated domain. | String |
| editable (読み書き) | The editable state: True if the field is editable. | Boolean |
| isNullable (読み書き) | The nullable state: True if the field allows null values. | Boolean |
| length (読み書き) | The field's length. | Integer |
| name (読み書き) | The name of the field. | String |
| precision (読み書き) | The precision of the field. | Integer |
| required (読み書き) | The required state: True if the field must contain a value. | Boolean |
| scale (読み書き) | The field's scale. | Integer |
| type (読み書き) | The field type.
Learn more about ArcGIS field data types | String |
コードのサンプル
Field example
Display field properties for the specified feature class.
import arcpy
feature_class = "c:/data/counties.shp"
# Create a list of fields using the ListFields function
fields = arcpy.ListFields(feature_class)
# 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))