Zusammenfassung
Determines the existence of the specified data object. This function tests for the existence of various data types including feature classes, tables, datasets, shapefiles, workspaces, layers, and files. The function returns a Boolean indicating whether the element exists.
Diskussion
Layers in a stand-alone script and layers in an active map can be used as input to Exists.
Syntax
Exists (dataset)
| Parameter | Erläuterung | Datentyp |
dataset | The path to the dataset to be checked for existence. | String |
| Datentyp | Erläuterung |
| Boolean | A Boolean value of True will be returned if the specified element exists. |
Codebeispiel
Check for the existence of specified data object.
import arcpy
# Set the current workspace
arcpy.env.workspace = "c:/base/data.gdb"
# Check for existence of data before deleting
if arcpy.Exists("roadbuffer"):
arcpy.Delete_management("roadbuffer")