Row

Zusammenfassung

The Row object represents the row of a table. The Row object is returned from InsertCursor, SearchCursor, and UpdateCursor.

Vorversion:

The cursor functions and Row object only remain for use in legacy scripts. When authoring or updating scripts, it is recommended that you use the cursors in the arcpy.da module. The arcpy.da cursors provide improved performance and functionality, and support for newer field types and tokens.

Diskussion

The Row object dynamically support field names from the data source as read/write properties. Field names that cannot be supported directly as a property, such as qualified field names that include periods, can be accessed using the setValue and getValue methods.

Methodenübersicht

Methode	Erläuterung
getValue (field_name)	Returns the field value.
isNull (field_name)	Is the field value null.
setNull (field_name)	Sets the field value to null.
setValue (field_name, object)	Sets the field value.

Methoden

getValue (field_name)

Parameter	Erläuterung	Datentyp
field_name	The field from which the value will be accessed.	String

Rückgabewert

Datentyp	Erläuterung
Object	The field value.

isNull (field_name)

Parameter	Erläuterung	Datentyp
field_name	The field to be queried.	None

Rückgabewert

Datentyp	Erläuterung
Boolean	True if the field value is null.

setNull (field_name)

Parameter	Erläuterung	Datentyp
field_name	The field that will be set to null.	String

setValue (field_name, object)

Parameter	Erläuterung	Datentyp
field_name	The field that will be set to the new value.	String
object	The value used to set the field value.	Object

Codebeispiel

Row example

Use update cursor to fetch row from feature class, update field value and row, iterating through rows in cursor.

import arcpy

# Set the workspace
arcpy.env.workspace = "c:/data"

# Use row object to get and set field values
cursor = arcpy.UpdateCursor("Addresses.dbf", '"STATENAME" = \'Ariz\'' )

# Iterate through rows and update values
for row in cursor:
    row.setValue("STATENAME", "Arizona")
    cursor.updateRow(row)

del cursor, row