1.9.37 • Public • Published

    Copyright 2008 Google Inc. All rights reserved.

    App Engine SDK - Development tools for Google App Engine


    • Installing on Mac OSX
    • Installing on Windows
    • Installing on Linux and other platforms
    • Running the SDK
    • Using the SDK
    • Using the App Engine Launcher


    1. Download and install Python 2.7 from
    2. Download the SDK installer from
    3. Install the SDK by double-clicking on the GoogleAppEngine.dmg file and running the installer.


    1. Download and install Python 2.7 from
    2. Download the SDK installer from
    3. Install the SDK by double-clicking on the GoogleAppEngine.msi file and running the installer.


    1. Download and install Python 2.7 from
    2. Download the SDK zip file from
    3. Unpack the zip file.


    You can run the SDK with the following command: [options]

    Application root must be the path to the application to run in this server. Must contain a valid app.yaml or app.yml file.

    Options: --address=ADDRESS, -a ADDRESS Address to which this server should bind. (Default localhost). --clear_datastore, -c Clear the Datastore on startup. (Default false) --debug, -d Use debug logging. (Default false) --help, -h View this helpful message. --port=PORT, -p PORT Port for the server to run on. (Default 8080)

    --allow_skipped_files Allow access to files matched by app.yaml's skipped_files (default False) --auth_domain Authorization domain that this app runs in. (Default --auto_id_policy=POLICY Dictate how automatic IDs are assigned by the datastore stub, "sequential" or "scattered". (Default sequential) --backends Run the dev_appserver with backends support (multiprocess mode). --blobstore_path=DIR Path to directory to use for storing Blobstore file stub data. --clear_prospective_search Clear the Prospective Search subscription index (Default false). --clear_search_indexes Clear the Full Text Search indexes (Default false). --datastore_path=DS_FILE Path to file to use for storing Datastore file stub data. (Default /tmp/dev_appserver.datastore) --debug_imports Enables debug logging for module imports, showing search paths used for finding modules and any errors encountered during the import process. --default_partition Default partition to use in the APPLICATION_ID. (Default dev) --disable_static_caching Never allow the browser to cache static files. (Default enable if expiration set in app.yaml) --disable_task_running When supplied, tasks will not be automatically run after submission and must be run manually in the local admin console. --enable_sendmail Enable sendmail when SMTP not configured. (Default false) --high_replication Use the high replication datastore consistency model. (Default false). --history_path=PATH Path to use for storing Datastore history. (Default /tmp/dev_appserver.datastore.history) --persist_logs Enables storage of all request and application logs to enable later access. (Default false). --logs_path=LOGS_FILE Path to use for storing request logs. If this is set, logs will be persisted to the given path. If this is not set and --persist_logs is true, logs are stored in /tmp/dev_appserver.logs. --multiprocess_min_port When running in multiprocess mode, specifies the lowest port value to use when choosing ports. If set to 0, select random ports. (Default 9000) --mysql_host=HOSTNAME MySQL database host that the rdbms API will use. (Default localhost) --mysql_port=PORT MySQL port to connect to. (Default 3306) --mysql_user=USER MySQL user to connect as. (Default '') --mysql_password=PASSWORD MySQL password to use. (Default '') --mysql_socket=PATH MySQL Unix socket file path. (Default '%(mysql_socket)s') --require_indexes Disallows queries that require composite indexes not defined in index.yaml. --search_indexes_path=PATH Path to file to use for storing Full Text Search indexes (Default %(search_indexes_path)s). --show_mail_body Log the body of emails in mail stub. (Default false) --skip_sdk_update_check Skip checking for SDK updates. If false, fall back to opt_in setting specified in .appcfg_nag (Default false) --smtp_host=HOSTNAME SMTP host to send test mail to. Leaving this unset will disable SMTP mail sending. (Default '') --smtp_port=PORT SMTP port to send test mail to. (Default 25) --smtp_user=USER SMTP user to connect as. Stub will only attempt to login if this field is non-empty. (Default ''). --smtp_password=PASSWORD Password for SMTP server. (Default '') --task_retry_seconds How long to wait in seconds before retrying a task after it fails during execution. (Default '30') --use_sqlite Use the new, SQLite based datastore stub. (Default false) --port_sqlite_data Converts the data from the file based datastore stub to the new SQLite stub, one time use only. Requires enough RAM to hold all of the entities. (Default false) --[enable|disable]_console Enables/disables the interactive console. (Default enabled if --address is unset, disabled if --address is set)


    For instructions on getting started with Google App Engine, please see the Google App Engine Getting Started Guide


    The Windows and Mac OSX Python SDKs include an additional development tool called the App Engine Launcher. This tool provides a simple graphical interface to create projects, run them locally, and deploy them to Google's App Engine servers. It can be used in place of the dev_appserver and appcfg command-line tools.

    The Windows SDK can optionally install a desktop short-cut during installation. If you are missing the short-cut, you can find the launcher in the launcher subdirectory of your App Engine installation. The default location is C:\Program Files\Google\google_appengine\launcher\GoogleAppEngineLauncher.exe

    In Mac OSX, the Launcher is installed by dragging it out of the .dmg to a location specified by the user. The Launcher contains the SDK inside of it. A typical drag-install destination for the Launcher and SDK is /Applications/


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