CheckOutExtension

Zusammenfassung

Lizenz:

CheckOutExtension is only needed when using a Concurrent Use license; for all other cases it has no effect. When using a Concurrent Use license, once the extension license has been retrieved by the script, tools using that extension can be used. Once a script is finished with an extension's tools, the CheckInExtension function should be used to return the license so other applications can use it. All checked-out extension licenses and set product licenses are returned when a script completes.

Auswertung

Hinweis:

CheckOutExtension is only needed when using a Concurrent Use license; for all other cases it has no effect. When using a Concurrent Use license, once the extension license has been retrieved by the script, tools using that extension can be used. Once a script is finished with an extension's tools, the CheckInExtension function should be used to return the license to the license manager so other applications can use it. All checked-out extension licenses and set product licenses are returned to the license manager when a script completes.

Syntax

CheckOutExtension (extension_code)
ParameterErklärungDatentyp
extension_code

Keyword for the extension product that is being checked.

  • 3DErweiterung "ArcGIS 3D Analyst"
  • AeronauticalArcGIS Aviation Charting
  • AirportsArcGIS Aviation Airports
  • ArcScanArcScan
  • BathymetryArcGIS Bathymetry
  • BusinessPremArcGIS Business Analyst
  • DataReviewerArcGIS Data Reviewer Desktop
  • DataInteroperabilityErweiterung "ArcGIS Data Interoperability for Desktop"
  • DefenseArcGIS Defense Mapping
  • FoundationArcGIS Production Mapping
  • GeoStatsErweiterung "ArcGIS Geostatistical Analyst"
  • ImageAnalystImage Analyst
  • JTXArcGIS Workflow Manager (Classic) Desktop
  • LocationReferencingArcGIS Pipeline Referencing or ArcGIS Roads and Highways
  • LocateXTLocateXT extension
  • NauticalArcGIS Maritime
  • NetworkErweiterung "ArcGIS Network Analyst"
  • PublisherArcGIS Publisher
  • SchematicsErweiterung "ArcGIS Schematics"
  • SMPAsiaPacificStreetMap Premium Asia Pacific
  • SMPEuropeStreetMap Premium Europe
  • SMPJapanStreetMap Premium Japan
  • SMPLatinAmericaStreetMap Premium Latin America
  • SMPMiddleEastAfricaStreetMap Premium Middle East Africa
  • SMPNorthAmericaStreetMap Premium North America
  • SpatialErweiterung "ArcGIS Spatial Analyst"
  • TrackingErweiterung "ArcGIS Tracking Analyst"
String
Rückgabewert
DatentypErklärung
String

There are three possible returned values for CheckOutExtension:

  • NotInitializedNo desktop license has been set.
  • UnavailableThe requested license is unavailable to be set.
  • CheckedOutThe license has been set successfully.

Codebeispiel

CheckOutExtension example

Check out 3D extension for use by tools.

import arcpy

class LicenseError(Exception):
    pass

try:
    if arcpy.CheckExtension("3D") == "Available":
        arcpy.CheckOutExtension("3D")
    else:
        # raise a custom exception
        raise LicenseError

    arcpy.env.workspace = "c:/GrosMorne"
    arcpy.HillShade_3d("WesternBrook", "wbrook_hill", 300)
    arcpy.Aspect_3d("WesternBrook", "wbrook_aspect")
    arcpy.CheckInExtension("3D")

except LicenseError:
    print("3D Analyst license is unavailable")
except arcpy.ExecuteError:
    print(arcpy.GetMessages(2))

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