Exists

概要

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.

ディスカッション

Layers in a stand-alone script and layers in an active map can be used as input to Exists.

構文

Exists (dataset)

パラメーター	説明	データ タイプ
dataset	The path to the dataset to be checked for existence.	String

戻り値

データ タイプ	説明
Boolean	A Boolean value of True will be returned if the specified element exists.

コードのサンプル

Exists example

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")