.. _other-full-config: Config file and command line options ==================================== The Jupyter Server can be run with a variety of command line arguments. A list of available options can be found below in the :ref:`options section `. Defaults for these options can also be set by creating a file named ``jupyter_server_config.py`` in your Jupyter folder. The Jupyter folder is in your home directory, ``~/.jupyter``. To create a ``jupyter_server_config.py`` file, with all the defaults commented out, you can use the following command line:: $ jupyter server --generate-config .. _options: Options ------- This list of options can be generated by running the following and hitting enter:: $ jupyter server --help-all Application.log_datefmt : Unicode Default: ``'%Y-%m-%d %H:%M:%S'`` The date format used by logging formatters for %(asctime)s Application.log_format : Unicode Default: ``'[%(name)s]%(highlevel)s %(message)s'`` The Logging format template Application.log_level : any of ``0``|``10``|``20``|``30``|``40``|``50``|``'DEBUG'``|``'INFO'``|``'WARN'``|``'ERROR'``|``'CRITICAL'`` Default: ``30`` Set the log level by value or name. Application.logging_config : Dict Default: ``{}`` Configure additional log handlers. The default stderr logs handler is configured by the log_level, log_datefmt and log_format settings. This configuration can be used to configure additional handlers (e.g. to output the log to a file) or for finer control over the default handlers. If provided this should be a logging configuration dictionary, for more information see: https://docs.python.org/3/library/logging.config.html#logging-config-dictschema This dictionary is merged with the base logging configuration which defines the following: * A logging formatter intended for interactive use called ``console``. * A logging handler that writes to stderr called ``console`` which uses the formatter ``console``. * A logger with the name of this application set to ``DEBUG`` level. This example adds a new handler that writes to a file: .. code-block:: python c.Application.logging_config = { "handlers": { "file": { "class": "logging.FileHandler", "level": "DEBUG", "filename": "", } }, "loggers": { "": { "level": "DEBUG", # NOTE: if you don't list the default "console" # handler here then it will be disabled "handlers": ["console", "file"], }, }, } Application.show_config : Bool Default: ``False`` Instead of starting the Application, dump configuration to stdout Application.show_config_json : Bool Default: ``False`` Instead of starting the Application, dump configuration to stdout (as JSON) JupyterApp.answer_yes : Bool Default: ``False`` Answer yes to any prompts. JupyterApp.config_file : Unicode Default: ``''`` Full path of a config file. JupyterApp.config_file_name : Unicode Default: ``''`` Specify a config file to load. JupyterApp.generate_config : Bool Default: ``False`` Generate default config file. JupyterApp.log_datefmt : Unicode Default: ``'%Y-%m-%d %H:%M:%S'`` The date format used by logging formatters for %(asctime)s JupyterApp.log_format : Unicode Default: ``'[%(name)s]%(highlevel)s %(message)s'`` The Logging format template JupyterApp.log_level : any of ``0``|``10``|``20``|``30``|``40``|``50``|``'DEBUG'``|``'INFO'``|``'WARN'``|``'ERROR'``|``'CRITICAL'`` Default: ``30`` Set the log level by value or name. JupyterApp.logging_config : Dict Default: ``{}`` Configure additional log handlers. The default stderr logs handler is configured by the log_level, log_datefmt and log_format settings. This configuration can be used to configure additional handlers (e.g. to output the log to a file) or for finer control over the default handlers. If provided this should be a logging configuration dictionary, for more information see: https://docs.python.org/3/library/logging.config.html#logging-config-dictschema This dictionary is merged with the base logging configuration which defines the following: * A logging formatter intended for interactive use called ``console``. * A logging handler that writes to stderr called ``console`` which uses the formatter ``console``. * A logger with the name of this application set to ``DEBUG`` level. This example adds a new handler that writes to a file: .. code-block:: python c.Application.logging_config = { "handlers": { "file": { "class": "logging.FileHandler", "level": "DEBUG", "filename": "", } }, "loggers": { "": { "level": "DEBUG", # NOTE: if you don't list the default "console" # handler here then it will be disabled "handlers": ["console", "file"], }, }, } JupyterApp.show_config : Bool Default: ``False`` Instead of starting the Application, dump configuration to stdout JupyterApp.show_config_json : Bool Default: ``False`` Instead of starting the Application, dump configuration to stdout (as JSON) ServerApp.allow_credentials : Bool Default: ``False`` Set the Access-Control-Allow-Credentials: true header ServerApp.allow_external_kernels : Bool Default: ``False`` Whether or not to allow external kernels, whose connection files are placed in external_connection_dir. ServerApp.allow_origin : Unicode Default: ``''`` Set the Access-Control-Allow-Origin header Use '*' to allow any origin to access your server. Takes precedence over allow_origin_pat. ServerApp.allow_origin_pat : Unicode Default: ``''`` Use a regular expression for the Access-Control-Allow-Origin header Requests from an origin matching the expression will get replies with: Access-Control-Allow-Origin: origin where `origin` is the origin of the request. Ignored if allow_origin is set. ServerApp.allow_password_change : Bool Default: ``True`` DEPRECATED in 2.0. Use PasswordIdentityProvider.allow_password_change ServerApp.allow_remote_access : Bool Default: ``False`` Allow requests where the Host header doesn't point to a local server By default, requests get a 403 forbidden response if the 'Host' header shows that the browser thinks it's on a non-local domain. Setting this option to True disables this check. This protects against 'DNS rebinding' attacks, where a remote web server serves you a page and then changes its DNS to send later requests to a local IP, bypassing same-origin checks. Local IP addresses (such as 127.0.0.1 and ::1) are allowed as local, along with hostnames configured in local_hostnames. ServerApp.allow_root : Bool Default: ``False`` Whether to allow the user to run the server as root. ServerApp.allow_unauthenticated_access : Bool Default: ``True`` Allow unauthenticated access to endpoints without authentication rule. When set to `True` (default in jupyter-server 2.0, subject to change in the future), any request to an endpoint without an authentication rule (either `@tornado.web.authenticated`, or `@allow_unauthenticated`) will be permitted, regardless of whether user has logged in or not. When set to `False`, logging in will be required for access to each endpoint, excluding the endpoints marked with `@allow_unauthenticated` decorator. This option can be configured using `JUPYTER_SERVER_ALLOW_UNAUTHENTICATED_ACCESS` environment variable: any non-empty value other than "true" and "yes" will prevent unauthenticated access to endpoints without `@allow_unauthenticated`. ServerApp.answer_yes : Bool Default: ``False`` Answer yes to any prompts. ServerApp.authenticate_prometheus : Bool Default: ``True`` " Require authentication to access prometheus metrics. ServerApp.authorizer_class : Type Default: ``'jupyter_server.auth.authorizer.AllowAllAuthorizer'`` The authorizer class to use. ServerApp.autoreload : Bool Default: ``False`` Reload the webapp when changes are made to any Python src files. ServerApp.base_url : Unicode Default: ``'/'`` The base URL for the Jupyter server. Leading and trailing slashes can be omitted, and will automatically be added. ServerApp.browser : Unicode Default: ``''`` Specify what command to use to invoke a web browser when starting the server. If not specified, the default browser will be determined by the `webbrowser` standard library module, which allows setting of the BROWSER environment variable to override it. ServerApp.certfile : Unicode Default: ``''`` The full path to an SSL/TLS certificate file. ServerApp.client_ca : Unicode Default: ``''`` The full path to a certificate authority certificate for SSL/TLS client authentication. ServerApp.config_file : Unicode Default: ``''`` Full path of a config file. ServerApp.config_file_name : Unicode Default: ``''`` Specify a config file to load. ServerApp.config_manager_class : Type Default: ``'jupyter_server.services.config.manager.ConfigManager'`` The config manager class to use ServerApp.contents_manager_class : Type Default: ``'jupyter_server.services.contents.largefilemanager.AsyncLarge...`` The content manager class to use. ServerApp.cookie_options : Dict Default: ``{}`` DEPRECATED. Use IdentityProvider.cookie_options ServerApp.cookie_secret : Bytes Default: ``b''`` The random bytes used to secure cookies. By default this is generated on first start of the server and persisted across server sessions by writing the cookie secret into the `cookie_secret_file` file. When using an executable config file you can override this to be random at each server restart. Note: Cookie secrets should be kept private, do not share config files with cookie_secret stored in plaintext (you can read the value from a file). ServerApp.cookie_secret_file : Unicode Default: ``''`` The file where the cookie secret is stored. ServerApp.custom_display_url : Unicode Default: ``''`` Override URL shown to users. Replace actual URL, including protocol, address, port and base URL, with the given value when displaying URL to the users. Do not change the actual connection URL. If authentication token is enabled, the token is added to the custom URL automatically. This option is intended to be used when the URL to display to the user cannot be determined reliably by the Jupyter server (proxified or containerized setups for example). ServerApp.default_url : Unicode Default: ``'/'`` The default URL to redirect to from `/` ServerApp.disable_check_xsrf : Bool Default: ``False`` Disable cross-site-request-forgery protection Jupyter server includes protection from cross-site request forgeries, requiring API requests to either: - originate from pages served by this server (validated with XSRF cookie and token), or - authenticate with a token Some anonymous compute resources still desire the ability to run code, completely without authentication. These services can disable all authentication and security checks, with the full knowledge of what that implies. ServerApp.external_connection_dir : Unicode Default: ``None`` The directory to look at for external kernel connection files, if allow_external_kernels is True. Defaults to Jupyter runtime_dir/external_kernels. Make sure that this directory is not filled with left-over connection files, that could result in unnecessary kernel manager creations. ServerApp.extra_services : List Default: ``[]`` handlers that should be loaded at higher priority than the default services ServerApp.extra_static_paths : List Default: ``[]`` Extra paths to search for serving static files. This allows adding javascript/css to be available from the Jupyter server machine, or overriding individual files in the IPython ServerApp.extra_template_paths : List Default: ``[]`` Extra paths to search for serving jinja templates. Can be used to override templates from jupyter_server.templates. ServerApp.file_to_run : Unicode Default: ``''`` Open the named file when the application is launched. ServerApp.file_url_prefix : Unicode Default: ``'notebooks'`` The URL prefix where files are opened directly. ServerApp.generate_config : Bool Default: ``False`` Generate default config file. ServerApp.get_secure_cookie_kwargs : Dict Default: ``{}`` DEPRECATED. Use IdentityProvider.get_secure_cookie_kwargs ServerApp.identity_provider_class : Type Default: ``'jupyter_server.auth.identity.PasswordIdentityProvider'`` The identity provider class to use. ServerApp.iopub_data_rate_limit : Float Default: ``0.0`` DEPRECATED. Use ZMQChannelsWebsocketConnection.iopub_data_rate_limit ServerApp.iopub_msg_rate_limit : Float Default: ``0.0`` DEPRECATED. Use ZMQChannelsWebsocketConnection.iopub_msg_rate_limit ServerApp.ip : Unicode Default: ``'localhost'`` The IP address the Jupyter server will listen on. ServerApp.jinja_environment_options : Dict Default: ``{}`` Supply extra arguments that will be passed to Jinja environment. ServerApp.jinja_template_vars : Dict Default: ``{}`` Extra variables to supply to jinja templates when rendering. ServerApp.jpserver_extensions : Dict Default: ``{}`` Dict of Python modules to load as Jupyter server extensions.Entry values can be used to enable and disable the loading ofthe extensions. The extensions will be loaded in alphabetical order. ServerApp.kernel_manager_class : Type Default: ``'jupyter_server.services.kernels.kernelmanager.MappingKernelM...`` The kernel manager class to use. ServerApp.kernel_spec_manager_class : Type Default: ``'builtins.object'`` The kernel spec manager class to use. Should be a subclass of `jupyter_client.kernelspec.KernelSpecManager`. The Api of KernelSpecManager is provisional and might change without warning between this version of Jupyter and the next stable one. ServerApp.kernel_websocket_connection_class : Type Default: ``'jupyter_server.services.kernels.connection.base.BaseKernelWe...`` The kernel websocket connection class to use. ServerApp.kernel_ws_protocol : Unicode Default: ``''`` DEPRECATED. Use ZMQChannelsWebsocketConnection.kernel_ws_protocol ServerApp.keyfile : Unicode Default: ``''`` The full path to a private key file for usage with SSL/TLS. ServerApp.limit_rate : Bool Default: ``False`` DEPRECATED. Use ZMQChannelsWebsocketConnection.limit_rate ServerApp.local_hostnames : List Default: ``['localhost']`` Hostnames to allow as local when allow_remote_access is False. Local IP addresses (such as 127.0.0.1 and ::1) are automatically accepted as local as well. ServerApp.log_datefmt : Unicode Default: ``'%Y-%m-%d %H:%M:%S'`` The date format used by logging formatters for %(asctime)s ServerApp.log_format : Unicode Default: ``'[%(name)s]%(highlevel)s %(message)s'`` The Logging format template ServerApp.log_level : any of ``0``|``10``|``20``|``30``|``40``|``50``|``'DEBUG'``|``'INFO'``|``'WARN'``|``'ERROR'``|``'CRITICAL'`` Default: ``30`` Set the log level by value or name. ServerApp.logging_config : Dict Default: ``{}`` Configure additional log handlers. The default stderr logs handler is configured by the log_level, log_datefmt and log_format settings. This configuration can be used to configure additional handlers (e.g. to output the log to a file) or for finer control over the default handlers. If provided this should be a logging configuration dictionary, for more information see: https://docs.python.org/3/library/logging.config.html#logging-config-dictschema This dictionary is merged with the base logging configuration which defines the following: * A logging formatter intended for interactive use called ``console``. * A logging handler that writes to stderr called ``console`` which uses the formatter ``console``. * A logger with the name of this application set to ``DEBUG`` level. This example adds a new handler that writes to a file: .. code-block:: python c.Application.logging_config = { "handlers": { "file": { "class": "logging.FileHandler", "level": "DEBUG", "filename": "", } }, "loggers": { "": { "level": "DEBUG", # NOTE: if you don't list the default "console" # handler here then it will be disabled "handlers": ["console", "file"], }, }, } ServerApp.login_handler_class : Type Default: ``'jupyter_server.auth.login.LegacyLoginHandler'`` The login handler class to use. ServerApp.logout_handler_class : Type Default: ``'jupyter_server.auth.logout.LogoutHandler'`` The logout handler class to use. ServerApp.max_body_size : Int Default: ``536870912`` Sets the maximum allowed size of the client request body, specified in the Content-Length request header field. If the size in a request exceeds the configured value, a malformed HTTP message is returned to the client. Note: max_body_size is applied even in streaming mode. ServerApp.max_buffer_size : Int Default: ``536870912`` Gets or sets the maximum amount of memory, in bytes, that is allocated for use by the buffer manager. ServerApp.min_open_files_limit : Int Default: ``0`` Gets or sets a lower bound on the open file handles process resource limit. This may need to be increased if you run into an OSError: [Errno 24] Too many open files. This is not applicable when running on Windows. ServerApp.notebook_dir : Unicode Default: ``''`` DEPRECATED, use root_dir. ServerApp.open_browser : Bool Default: ``False`` Whether to open in a browser after starting. The specific browser used is platform dependent and determined by the python standard library `webbrowser` module, unless it is overridden using the --browser (ServerApp.browser) configuration option. ServerApp.password : Unicode Default: ``''`` DEPRECATED in 2.0. Use PasswordIdentityProvider.hashed_password ServerApp.password_required : Bool Default: ``False`` DEPRECATED in 2.0. Use PasswordIdentityProvider.password_required ServerApp.port : Int Default: ``0`` The port the server will listen on (env: JUPYTER_PORT). ServerApp.port_retries : Int Default: ``50`` The number of additional ports to try if the specified port is not available (env: JUPYTER_PORT_RETRIES). ServerApp.preferred_dir : Unicode Default: ``''`` Preferred starting directory to use for notebooks and kernels. ServerApp.preferred_dir is deprecated in jupyter-server 2.0. Use FileContentsManager.preferred_dir instead ServerApp.pylab : Unicode Default: ``'disabled'`` DISABLED: use %pylab or %matplotlib in the notebook to enable matplotlib. ServerApp.quit_button : Bool Default: ``True`` If True, display controls to shut down the Jupyter server, such as menu items or buttons. ServerApp.rate_limit_window : Float Default: ``0.0`` DEPRECATED. Use ZMQChannelsWebsocketConnection.rate_limit_window ServerApp.reraise_server_extension_failures : Bool Default: ``False`` Reraise exceptions encountered loading server extensions? ServerApp.root_dir : Unicode Default: ``''`` The directory to use for notebooks and kernels. ServerApp.session_manager_class : Type Default: ``'builtins.object'`` The session manager class to use. ServerApp.show_config : Bool Default: ``False`` Instead of starting the Application, dump configuration to stdout ServerApp.show_config_json : Bool Default: ``False`` Instead of starting the Application, dump configuration to stdout (as JSON) ServerApp.shutdown_no_activity_timeout : Int Default: ``0`` Shut down the server after N seconds with no kernelsrunning and no activity. This can be used together with culling idle kernels (MappingKernelManager.cull_idle_timeout) to shutdown the Jupyter server when it's not in use. This is not precisely timed: it may shut down up to a minute later. 0 (the default) disables this automatic shutdown. ServerApp.sock : Unicode Default: ``''`` The UNIX socket the Jupyter server will listen on. ServerApp.sock_mode : Unicode Default: ``'0600'`` The permissions mode for UNIX socket creation (default: 0600). ServerApp.ssl_options : Dict Default: ``{}`` Supply SSL options for the tornado HTTPServer. See the tornado docs for details. ServerApp.static_immutable_cache : List Default: ``[]`` Paths to set up static files as immutable. This allow setting up the cache control of static files as immutable. It should be used for static file named with a hash for instance. ServerApp.terminado_settings : Dict Default: ``{}`` Supply overrides for terminado. Currently only supports "shell_command". ServerApp.terminals_enabled : Bool Default: ``False`` Set to False to disable terminals. This does *not* make the server more secure by itself. Anything the user can in a terminal, they can also do in a notebook. Terminals may also be automatically disabled if the terminado package is not available. ServerApp.token : Unicode Default: ``''`` DEPRECATED. Use IdentityProvider.token ServerApp.tornado_settings : Dict Default: ``{}`` Supply overrides for the tornado.web.Application that the Jupyter server uses. ServerApp.trust_xheaders : Bool Default: ``False`` Whether to trust or not X-Scheme/X-Forwarded-Proto and X-Real-Ip/X-Forwarded-For headerssent by the upstream reverse proxy. Necessary if the proxy handles SSL ServerApp.use_redirect_file : Bool Default: ``True`` Disable launching browser by redirect file For versions of notebook > 5.7.2, a security feature measure was added that prevented the authentication token used to launch the browser from being visible. This feature makes it difficult for other users on a multi-user system from running code in your Jupyter session as you. However, some environments (like Windows Subsystem for Linux (WSL) and Chromebooks), launching a browser using a redirect file can lead the browser failing to load. This is because of the difference in file structures/paths between the runtime and the browser. Disabling this setting to False will disable this behavior, allowing the browser to launch by using a URL and visible token (as before). ServerApp.webbrowser_open_new : Int Default: ``2`` Specify where to open the server on startup. This is the `new` argument passed to the standard library method `webbrowser.open`. The behaviour is not guaranteed, but depends on browser support. Valid values are: - 2 opens a new tab, - 1 opens a new window, - 0 opens in an existing window. See the `webbrowser.open` documentation for details. ServerApp.websocket_compression_options : Any Default: ``None`` Set the tornado compression options for websocket connections. This value will be returned from :meth:`WebSocketHandler.get_compression_options`. None (default) will disable compression. A dict (even an empty one) will enable compression. See the tornado docs for WebSocketHandler.get_compression_options for details. ServerApp.websocket_ping_interval : Int Default: ``0`` Configure the websocket ping interval in seconds. Websockets are long-lived connections that are used by some Jupyter Server extensions. Periodic pings help to detect disconnected clients and keep the connection active. If this is set to None, then no pings will be performed. When a ping is sent, the client has ``websocket_ping_timeout`` seconds to respond. If no response is received within this period, the connection will be closed from the server side. ServerApp.websocket_ping_timeout : Int Default: ``0`` Configure the websocket ping timeout in seconds. See ``websocket_ping_interval`` for details. ServerApp.websocket_url : Unicode Default: ``''`` The base URL for websockets, if it differs from the HTTP server (hint: it almost certainly doesn't). Should be in the form of an HTTP origin: ws[s]://hostname[:port] ConnectionFileMixin.connection_file : Unicode Default: ``''`` JSON file in which to store connection info [default: kernel-.json] This file will contain the IP, ports, and authentication key needed to connect clients to this kernel. By default, this file will be created in the security dir of the current profile, but can be specified by absolute path. ConnectionFileMixin.control_port : Int Default: ``0`` set the control (ROUTER) port [default: random] ConnectionFileMixin.hb_port : Int Default: ``0`` set the heartbeat port [default: random] ConnectionFileMixin.iopub_port : Int Default: ``0`` set the iopub (PUB) port [default: random] ConnectionFileMixin.ip : Unicode Default: ``''`` Set the kernel's IP address [default localhost]. If the IP address is something other than localhost, then Consoles on other machines will be able to connect to the Kernel, so be careful! ConnectionFileMixin.shell_port : Int Default: ``0`` set the shell (ROUTER) port [default: random] ConnectionFileMixin.stdin_port : Int Default: ``0`` set the stdin (ROUTER) port [default: random] ConnectionFileMixin.transport : any of ``'tcp'``|``'ipc'`` (case-insensitive) Default: ``'tcp'`` No description KernelManager.autorestart : Bool Default: ``True`` Should we autorestart the kernel if it dies. KernelManager.cache_ports : Bool Default: ``False`` True if the MultiKernelManager should cache ports for this KernelManager instance KernelManager.connection_file : Unicode Default: ``''`` JSON file in which to store connection info [default: kernel-.json] This file will contain the IP, ports, and authentication key needed to connect clients to this kernel. By default, this file will be created in the security dir of the current profile, but can be specified by absolute path. KernelManager.control_port : Int Default: ``0`` set the control (ROUTER) port [default: random] KernelManager.hb_port : Int Default: ``0`` set the heartbeat port [default: random] KernelManager.iopub_port : Int Default: ``0`` set the iopub (PUB) port [default: random] KernelManager.ip : Unicode Default: ``''`` Set the kernel's IP address [default localhost]. If the IP address is something other than localhost, then Consoles on other machines will be able to connect to the Kernel, so be careful! KernelManager.shell_port : Int Default: ``0`` set the shell (ROUTER) port [default: random] KernelManager.shutdown_wait_time : Float Default: ``5.0`` Time to wait for a kernel to terminate before killing it, in seconds. When a shutdown request is initiated, the kernel will be immediately sent an interrupt (SIGINT), followedby a shutdown_request message, after 1/2 of `shutdown_wait_time`it will be sent a terminate (SIGTERM) request, and finally at the end of `shutdown_wait_time` will be killed (SIGKILL). terminate and kill may be equivalent on windows. Note that this value can beoverridden by the in-use kernel provisioner since shutdown times mayvary by provisioned environment. KernelManager.stdin_port : Int Default: ``0`` set the stdin (ROUTER) port [default: random] KernelManager.transport : any of ``'tcp'``|``'ipc'`` (case-insensitive) Default: ``'tcp'`` No description Session.buffer_threshold : Int Default: ``1024`` Threshold (in bytes) beyond which an object's buffer should be extracted to avoid pickling. Session.check_pid : Bool Default: ``True`` Whether to check PID to protect against calls after fork. This check can be disabled if fork-safety is handled elsewhere. Session.copy_threshold : Int Default: ``65536`` Threshold (in bytes) beyond which a buffer should be sent without copying. Session.debug : Bool Default: ``False`` Debug output in the Session Session.digest_history_size : Int Default: ``65536`` The maximum number of digests to remember. The digest history will be culled when it exceeds this value. Session.item_threshold : Int Default: ``64`` The maximum number of items for a container to be introspected for custom serialization. Containers larger than this are pickled outright. Session.key : CBytes Default: ``b''`` execution key, for signing messages. Session.keyfile : Unicode Default: ``''`` path to file containing execution key. Session.metadata : Dict Default: ``{}`` Metadata dictionary, which serves as the default top-level metadata dict for each message. Session.packer : DottedObjectName Default: ``'json'`` The name of the packer for serializing messages. Should be one of 'json', 'pickle', or an import name for a custom callable serializer. Session.session : CUnicode Default: ``''`` The UUID identifying this session. Session.signature_scheme : Unicode Default: ``'hmac-sha256'`` The digest scheme used to construct the message signatures. Must have the form 'hmac-HASH'. Session.unpacker : DottedObjectName Default: ``'json'`` The name of the unpacker for unserializing messages. Only used with custom functions for `packer`. Session.username : Unicode Default: ``'username'`` Username for the Session. Default is your system username. MultiKernelManager.default_kernel_name : Unicode Default: ``'python3'`` The name of the default kernel to start MultiKernelManager.kernel_manager_class : DottedObjectName Default: ``'jupyter_client.ioloop.IOLoopKernelManager'`` The kernel manager class. This is configurable to allow subclassing of the KernelManager for customized behavior. MultiKernelManager.shared_context : Bool Default: ``True`` Share a single zmq.Context to talk to all my kernels MappingKernelManager.allow_tracebacks : Bool Default: ``True`` Whether to send tracebacks to clients on exceptions. MappingKernelManager.allowed_message_types : List Default: ``[]`` White list of allowed kernel message types. When the list is empty, all message types are allowed. MappingKernelManager.buffer_offline_messages : Bool Default: ``True`` Whether messages from kernels whose frontends have disconnected should be buffered in-memory. When True (default), messages are buffered and replayed on reconnect, avoiding lost messages due to interrupted connectivity. Disable if long-running kernels will produce too much output while no frontends are connected. MappingKernelManager.cull_busy : Bool Default: ``False`` Whether to consider culling kernels which are busy. Only effective if cull_idle_timeout > 0. MappingKernelManager.cull_connected : Bool Default: ``False`` Whether to consider culling kernels which have one or more connections. Only effective if cull_idle_timeout > 0. MappingKernelManager.cull_idle_timeout : Int Default: ``0`` Timeout (in seconds) after which a kernel is considered idle and ready to be culled. Values of 0 or lower disable culling. Very short timeouts may result in kernels being culled for users with poor network connections. MappingKernelManager.cull_interval : Int Default: ``300`` The interval (in seconds) on which to check for idle kernels exceeding the cull timeout value. MappingKernelManager.default_kernel_name : Unicode Default: ``'python3'`` The name of the default kernel to start MappingKernelManager.kernel_info_timeout : Float Default: ``60`` Timeout for giving up on a kernel (in seconds). On starting and restarting kernels, we check whether the kernel is running and responsive by sending kernel_info_requests. This sets the timeout in seconds for how long the kernel can take before being presumed dead. This affects the MappingKernelManager (which handles kernel restarts) and the ZMQChannelsHandler (which handles the startup). MappingKernelManager.kernel_manager_class : DottedObjectName Default: ``'jupyter_client.ioloop.IOLoopKernelManager'`` The kernel manager class. This is configurable to allow subclassing of the KernelManager for customized behavior. MappingKernelManager.root_dir : Unicode Default: ``''`` No description MappingKernelManager.shared_context : Bool Default: ``True`` Share a single zmq.Context to talk to all my kernels MappingKernelManager.traceback_replacement_message : Unicode Default: ``'An exception occurred at runtime, which is not shown due to ...`` Message to print when allow_tracebacks is False, and an exception occurs MappingKernelManager.untracked_message_types : List Default: ``['comm_info_request', 'comm_info_reply', 'kernel_info_request...`` List of kernel message types excluded from user activity tracking. This should be a superset of the message types sent on any channel other than the shell channel. KernelSpecManager.allowed_kernelspecs : Set Default: ``set()`` List of allowed kernel names. By default, all installed kernels are allowed. KernelSpecManager.ensure_native_kernel : Bool Default: ``True`` If there is no Python kernelspec registered and the IPython kernel is available, ensure it is added to the spec list. KernelSpecManager.kernel_spec_class : Type Default: ``'jupyter_client.kernelspec.KernelSpec'`` The kernel spec class. This is configurable to allow subclassing of the KernelSpecManager for customized behavior. KernelSpecManager.whitelist : Set Default: ``set()`` Deprecated, use `KernelSpecManager.allowed_kernelspecs` AsyncMultiKernelManager.default_kernel_name : Unicode Default: ``'python3'`` The name of the default kernel to start AsyncMultiKernelManager.kernel_manager_class : DottedObjectName Default: ``'jupyter_client.ioloop.AsyncIOLoopKernelManager'`` The kernel manager class. This is configurable to allow subclassing of the AsyncKernelManager for customized behavior. AsyncMultiKernelManager.shared_context : Bool Default: ``True`` Share a single zmq.Context to talk to all my kernels AsyncMultiKernelManager.use_pending_kernels : Bool Default: ``False`` Whether to make kernels available before the process has started. The kernel has a `.ready` future which can be awaited before connecting AsyncMappingKernelManager.allow_tracebacks : Bool Default: ``True`` Whether to send tracebacks to clients on exceptions. AsyncMappingKernelManager.allowed_message_types : List Default: ``[]`` White list of allowed kernel message types. When the list is empty, all message types are allowed. AsyncMappingKernelManager.buffer_offline_messages : Bool Default: ``True`` Whether messages from kernels whose frontends have disconnected should be buffered in-memory. When True (default), messages are buffered and replayed on reconnect, avoiding lost messages due to interrupted connectivity. Disable if long-running kernels will produce too much output while no frontends are connected. AsyncMappingKernelManager.cull_busy : Bool Default: ``False`` Whether to consider culling kernels which are busy. Only effective if cull_idle_timeout > 0. AsyncMappingKernelManager.cull_connected : Bool Default: ``False`` Whether to consider culling kernels which have one or more connections. Only effective if cull_idle_timeout > 0. AsyncMappingKernelManager.cull_idle_timeout : Int Default: ``0`` Timeout (in seconds) after which a kernel is considered idle and ready to be culled. Values of 0 or lower disable culling. Very short timeouts may result in kernels being culled for users with poor network connections. AsyncMappingKernelManager.cull_interval : Int Default: ``300`` The interval (in seconds) on which to check for idle kernels exceeding the cull timeout value. AsyncMappingKernelManager.default_kernel_name : Unicode Default: ``'python3'`` The name of the default kernel to start AsyncMappingKernelManager.kernel_info_timeout : Float Default: ``60`` Timeout for giving up on a kernel (in seconds). On starting and restarting kernels, we check whether the kernel is running and responsive by sending kernel_info_requests. This sets the timeout in seconds for how long the kernel can take before being presumed dead. This affects the MappingKernelManager (which handles kernel restarts) and the ZMQChannelsHandler (which handles the startup). AsyncMappingKernelManager.kernel_manager_class : DottedObjectName Default: ``'jupyter_client.ioloop.AsyncIOLoopKernelManager'`` The kernel manager class. This is configurable to allow subclassing of the AsyncKernelManager for customized behavior. AsyncMappingKernelManager.root_dir : Unicode Default: ``''`` No description AsyncMappingKernelManager.shared_context : Bool Default: ``True`` Share a single zmq.Context to talk to all my kernels AsyncMappingKernelManager.traceback_replacement_message : Unicode Default: ``'An exception occurred at runtime, which is not shown due to ...`` Message to print when allow_tracebacks is False, and an exception occurs AsyncMappingKernelManager.untracked_message_types : List Default: ``['comm_info_request', 'comm_info_reply', 'kernel_info_request...`` List of kernel message types excluded from user activity tracking. This should be a superset of the message types sent on any channel other than the shell channel. AsyncMappingKernelManager.use_pending_kernels : Bool Default: ``False`` Whether to make kernels available before the process has started. The kernel has a `.ready` future which can be awaited before connecting ContentsManager.allow_hidden : Bool Default: ``False`` Allow access to hidden files ContentsManager.checkpoints : Instance Default: ``None`` No description ContentsManager.checkpoints_class : Type Default: ``'jupyter_server.services.contents.checkpoints.Checkpoints'`` No description ContentsManager.checkpoints_kwargs : Dict Default: ``{}`` No description ContentsManager.event_logger : Instance Default: ``None`` No description ContentsManager.files_handler_class : Type Default: ``'jupyter_server.files.handlers.FilesHandler'`` handler class to use when serving raw file requests. Default is a fallback that talks to the ContentsManager API, which may be inefficient, especially for large files. Local files-based ContentsManagers can use a StaticFileHandler subclass, which will be much more efficient. Access to these files should be Authenticated. ContentsManager.files_handler_params : Dict Default: ``{}`` Extra parameters to pass to files_handler_class. For example, StaticFileHandlers generally expect a `path` argument specifying the root directory from which to serve files. ContentsManager.hide_globs : List Default: ``['__pycache__', '*.pyc', '*.pyo', '.DS_Store', '*.so', '*.dyl...`` Glob patterns to hide in file and directory listings. ContentsManager.post_save_hook : Any Default: ``None`` Python callable or importstring thereof to be called on the path of a file just saved. This can be used to process the file on disk, such as converting the notebook to a script or HTML via nbconvert. It will be called as (all arguments passed by keyword):: hook(os_path=os_path, model=model, contents_manager=instance) - path: the filesystem path to the file just written - model: the model representing the file - contents_manager: this ContentsManager instance ContentsManager.pre_save_hook : Any Default: ``None`` Python callable or importstring thereof To be called on a contents model prior to save. This can be used to process the structure, such as removing notebook outputs or other side effects that should not be saved. It will be called as (all arguments passed by keyword):: hook(path=path, model=model, contents_manager=self) - model: the model to be saved. Includes file contents. Modifying this dict will affect the file that is stored. - path: the API path of the save destination - contents_manager: this ContentsManager instance ContentsManager.preferred_dir : Unicode Default: ``''`` Preferred starting directory to use for notebooks. This is an API path (`/` separated, relative to root dir) ContentsManager.root_dir : Unicode Default: ``'/'`` No description ContentsManager.untitled_directory : Unicode Default: ``'Untitled Folder'`` The base name used when creating untitled directories. ContentsManager.untitled_file : Unicode Default: ``'untitled'`` The base name used when creating untitled files. ContentsManager.untitled_notebook : Unicode Default: ``'Untitled'`` The base name used when creating untitled notebooks. FileManagerMixin.hash_algorithm : any of ``'sha384'``|``'sha224'``|``'sha3_256'``|``'sha1'``|``'sha512_256'``|``'sha512_224'``|``'sha256'``|``'blake2s'``|``'sha3_512'``|``'shake_128'``|``'sha3_224'``|``'shake_256'``|``'sm3'``|``'blake2b'``|``'sha512'``|``'md5-sha1'``|``'md5'``|``'sha3_384'`` Default: ``'sha256'`` Hash algorithm to use for file content, support by hashlib FileManagerMixin.use_atomic_writing : Bool Default: ``True`` By default notebooks are saved on disk on a temporary file and then if successfully written, it replaces the old ones. This procedure, namely 'atomic_writing', causes some bugs on file system without operation order enforcement (like some networked fs). If set to False, the new notebook is written directly on the old one which could fail (eg: full filesystem or quota ) FileContentsManager.allow_hidden : Bool Default: ``False`` Allow access to hidden files FileContentsManager.always_delete_dir : Bool Default: ``False`` If True, deleting a non-empty directory will always be allowed. WARNING this may result in files being permanently removed; e.g. on Windows, if the data size is too big for the trash/recycle bin the directory will be permanently deleted. If False (default), the non-empty directory will be sent to the trash only if safe. And if ``delete_to_trash`` is True, the directory won't be deleted. FileContentsManager.checkpoints : Instance Default: ``None`` No description FileContentsManager.checkpoints_class : Type Default: ``'jupyter_server.services.contents.checkpoints.Checkpoints'`` No description FileContentsManager.checkpoints_kwargs : Dict Default: ``{}`` No description FileContentsManager.delete_to_trash : Bool Default: ``True`` If True (default), deleting files will send them to the platform's trash/recycle bin, where they can be recovered. If False, deleting files really deletes them. FileContentsManager.event_logger : Instance Default: ``None`` No description FileContentsManager.files_handler_class : Type Default: ``'jupyter_server.files.handlers.FilesHandler'`` handler class to use when serving raw file requests. Default is a fallback that talks to the ContentsManager API, which may be inefficient, especially for large files. Local files-based ContentsManagers can use a StaticFileHandler subclass, which will be much more efficient. Access to these files should be Authenticated. FileContentsManager.files_handler_params : Dict Default: ``{}`` Extra parameters to pass to files_handler_class. For example, StaticFileHandlers generally expect a `path` argument specifying the root directory from which to serve files. FileContentsManager.hash_algorithm : any of ``'sha384'``|``'sha224'``|``'sha3_256'``|``'sha1'``|``'sha512_256'``|``'sha512_224'``|``'sha256'``|``'blake2s'``|``'sha3_512'``|``'shake_128'``|``'sha3_224'``|``'shake_256'``|``'sm3'``|``'blake2b'``|``'sha512'``|``'md5-sha1'``|``'md5'``|``'sha3_384'`` Default: ``'sha256'`` Hash algorithm to use for file content, support by hashlib FileContentsManager.hide_globs : List Default: ``['__pycache__', '*.pyc', '*.pyo', '.DS_Store', '*.so', '*.dyl...`` Glob patterns to hide in file and directory listings. FileContentsManager.max_copy_folder_size_mb : Int Default: ``500`` The max folder size that can be copied FileContentsManager.post_save_hook : Any Default: ``None`` Python callable or importstring thereof to be called on the path of a file just saved. This can be used to process the file on disk, such as converting the notebook to a script or HTML via nbconvert. It will be called as (all arguments passed by keyword):: hook(os_path=os_path, model=model, contents_manager=instance) - path: the filesystem path to the file just written - model: the model representing the file - contents_manager: this ContentsManager instance FileContentsManager.pre_save_hook : Any Default: ``None`` Python callable or importstring thereof To be called on a contents model prior to save. This can be used to process the structure, such as removing notebook outputs or other side effects that should not be saved. It will be called as (all arguments passed by keyword):: hook(path=path, model=model, contents_manager=self) - model: the model to be saved. Includes file contents. Modifying this dict will affect the file that is stored. - path: the API path of the save destination - contents_manager: this ContentsManager instance FileContentsManager.preferred_dir : Unicode Default: ``''`` Preferred starting directory to use for notebooks. This is an API path (`/` separated, relative to root dir) FileContentsManager.root_dir : Unicode Default: ``''`` No description FileContentsManager.untitled_directory : Unicode Default: ``'Untitled Folder'`` The base name used when creating untitled directories. FileContentsManager.untitled_file : Unicode Default: ``'untitled'`` The base name used when creating untitled files. FileContentsManager.untitled_notebook : Unicode Default: ``'Untitled'`` The base name used when creating untitled notebooks. FileContentsManager.use_atomic_writing : Bool Default: ``True`` By default notebooks are saved on disk on a temporary file and then if successfully written, it replaces the old ones. This procedure, namely 'atomic_writing', causes some bugs on file system without operation order enforcement (like some networked fs). If set to False, the new notebook is written directly on the old one which could fail (eg: full filesystem or quota ) AsyncContentsManager.allow_hidden : Bool Default: ``False`` Allow access to hidden files AsyncContentsManager.checkpoints : Instance Default: ``None`` No description AsyncContentsManager.checkpoints_class : Type Default: ``'jupyter_server.services.contents.checkpoints.AsyncCheckpoints'`` No description AsyncContentsManager.checkpoints_kwargs : Dict Default: ``{}`` No description AsyncContentsManager.event_logger : Instance Default: ``None`` No description AsyncContentsManager.files_handler_class : Type Default: ``'jupyter_server.files.handlers.FilesHandler'`` handler class to use when serving raw file requests. Default is a fallback that talks to the ContentsManager API, which may be inefficient, especially for large files. Local files-based ContentsManagers can use a StaticFileHandler subclass, which will be much more efficient. Access to these files should be Authenticated. AsyncContentsManager.files_handler_params : Dict Default: ``{}`` Extra parameters to pass to files_handler_class. For example, StaticFileHandlers generally expect a `path` argument specifying the root directory from which to serve files. AsyncContentsManager.hide_globs : List Default: ``['__pycache__', '*.pyc', '*.pyo', '.DS_Store', '*.so', '*.dyl...`` Glob patterns to hide in file and directory listings. AsyncContentsManager.post_save_hook : Any Default: ``None`` Python callable or importstring thereof to be called on the path of a file just saved. This can be used to process the file on disk, such as converting the notebook to a script or HTML via nbconvert. It will be called as (all arguments passed by keyword):: hook(os_path=os_path, model=model, contents_manager=instance) - path: the filesystem path to the file just written - model: the model representing the file - contents_manager: this ContentsManager instance AsyncContentsManager.pre_save_hook : Any Default: ``None`` Python callable or importstring thereof To be called on a contents model prior to save. This can be used to process the structure, such as removing notebook outputs or other side effects that should not be saved. It will be called as (all arguments passed by keyword):: hook(path=path, model=model, contents_manager=self) - model: the model to be saved. Includes file contents. Modifying this dict will affect the file that is stored. - path: the API path of the save destination - contents_manager: this ContentsManager instance AsyncContentsManager.preferred_dir : Unicode Default: ``''`` Preferred starting directory to use for notebooks. This is an API path (`/` separated, relative to root dir) AsyncContentsManager.root_dir : Unicode Default: ``'/'`` No description AsyncContentsManager.untitled_directory : Unicode Default: ``'Untitled Folder'`` The base name used when creating untitled directories. AsyncContentsManager.untitled_file : Unicode Default: ``'untitled'`` The base name used when creating untitled files. AsyncContentsManager.untitled_notebook : Unicode Default: ``'Untitled'`` The base name used when creating untitled notebooks. AsyncFileManagerMixin.hash_algorithm : any of ``'sha384'``|``'sha224'``|``'sha3_256'``|``'sha1'``|``'sha512_256'``|``'sha512_224'``|``'sha256'``|``'blake2s'``|``'sha3_512'``|``'shake_128'``|``'sha3_224'``|``'shake_256'``|``'sm3'``|``'blake2b'``|``'sha512'``|``'md5-sha1'``|``'md5'``|``'sha3_384'`` Default: ``'sha256'`` Hash algorithm to use for file content, support by hashlib AsyncFileManagerMixin.use_atomic_writing : Bool Default: ``True`` By default notebooks are saved on disk on a temporary file and then if successfully written, it replaces the old ones. This procedure, namely 'atomic_writing', causes some bugs on file system without operation order enforcement (like some networked fs). If set to False, the new notebook is written directly on the old one which could fail (eg: full filesystem or quota ) AsyncFileContentsManager.allow_hidden : Bool Default: ``False`` Allow access to hidden files AsyncFileContentsManager.always_delete_dir : Bool Default: ``False`` If True, deleting a non-empty directory will always be allowed. WARNING this may result in files being permanently removed; e.g. on Windows, if the data size is too big for the trash/recycle bin the directory will be permanently deleted. If False (default), the non-empty directory will be sent to the trash only if safe. And if ``delete_to_trash`` is True, the directory won't be deleted. AsyncFileContentsManager.checkpoints : Instance Default: ``None`` No description AsyncFileContentsManager.checkpoints_class : Type Default: ``'jupyter_server.services.contents.checkpoints.AsyncCheckpoints'`` No description AsyncFileContentsManager.checkpoints_kwargs : Dict Default: ``{}`` No description AsyncFileContentsManager.delete_to_trash : Bool Default: ``True`` If True (default), deleting files will send them to the platform's trash/recycle bin, where they can be recovered. If False, deleting files really deletes them. AsyncFileContentsManager.event_logger : Instance Default: ``None`` No description AsyncFileContentsManager.files_handler_class : Type Default: ``'jupyter_server.files.handlers.FilesHandler'`` handler class to use when serving raw file requests. Default is a fallback that talks to the ContentsManager API, which may be inefficient, especially for large files. Local files-based ContentsManagers can use a StaticFileHandler subclass, which will be much more efficient. Access to these files should be Authenticated. AsyncFileContentsManager.files_handler_params : Dict Default: ``{}`` Extra parameters to pass to files_handler_class. For example, StaticFileHandlers generally expect a `path` argument specifying the root directory from which to serve files. AsyncFileContentsManager.hash_algorithm : any of ``'sha384'``|``'sha224'``|``'sha3_256'``|``'sha1'``|``'sha512_256'``|``'sha512_224'``|``'sha256'``|``'blake2s'``|``'sha3_512'``|``'shake_128'``|``'sha3_224'``|``'shake_256'``|``'sm3'``|``'blake2b'``|``'sha512'``|``'md5-sha1'``|``'md5'``|``'sha3_384'`` Default: ``'sha256'`` Hash algorithm to use for file content, support by hashlib AsyncFileContentsManager.hide_globs : List Default: ``['__pycache__', '*.pyc', '*.pyo', '.DS_Store', '*.so', '*.dyl...`` Glob patterns to hide in file and directory listings. AsyncFileContentsManager.max_copy_folder_size_mb : Int Default: ``500`` The max folder size that can be copied AsyncFileContentsManager.post_save_hook : Any Default: ``None`` Python callable or importstring thereof to be called on the path of a file just saved. This can be used to process the file on disk, such as converting the notebook to a script or HTML via nbconvert. It will be called as (all arguments passed by keyword):: hook(os_path=os_path, model=model, contents_manager=instance) - path: the filesystem path to the file just written - model: the model representing the file - contents_manager: this ContentsManager instance AsyncFileContentsManager.pre_save_hook : Any Default: ``None`` Python callable or importstring thereof To be called on a contents model prior to save. This can be used to process the structure, such as removing notebook outputs or other side effects that should not be saved. It will be called as (all arguments passed by keyword):: hook(path=path, model=model, contents_manager=self) - model: the model to be saved. Includes file contents. Modifying this dict will affect the file that is stored. - path: the API path of the save destination - contents_manager: this ContentsManager instance AsyncFileContentsManager.preferred_dir : Unicode Default: ``''`` Preferred starting directory to use for notebooks. This is an API path (`/` separated, relative to root dir) AsyncFileContentsManager.root_dir : Unicode Default: ``''`` No description AsyncFileContentsManager.untitled_directory : Unicode Default: ``'Untitled Folder'`` The base name used when creating untitled directories. AsyncFileContentsManager.untitled_file : Unicode Default: ``'untitled'`` The base name used when creating untitled files. AsyncFileContentsManager.untitled_notebook : Unicode Default: ``'Untitled'`` The base name used when creating untitled notebooks. AsyncFileContentsManager.use_atomic_writing : Bool Default: ``True`` By default notebooks are saved on disk on a temporary file and then if successfully written, it replaces the old ones. This procedure, namely 'atomic_writing', causes some bugs on file system without operation order enforcement (like some networked fs). If set to False, the new notebook is written directly on the old one which could fail (eg: full filesystem or quota ) NotebookNotary.algorithm : any of ``'md5'``|``'sha384'``|``'sha3_384'``|``'sha224'``|``'sha3_256'``|``'sha256'``|``'sha3_224'``|``'blake2s'``|``'sha3_512'``|``'sha1'``|``'sha512'``|``'blake2b'`` Default: ``'sha256'`` The hashing algorithm used to sign notebooks. NotebookNotary.data_dir : Unicode Default: ``''`` The storage directory for notary secret and database. NotebookNotary.db_file : Unicode Default: ``''`` The sqlite file in which to store notebook signatures. By default, this will be in your Jupyter data directory. You can set it to ':memory:' to disable sqlite writing to the filesystem. NotebookNotary.secret : Bytes Default: ``b''`` The secret key with which notebooks are signed. NotebookNotary.secret_file : Unicode Default: ``''`` The file where the secret key is stored. NotebookNotary.store_factory : Callable Default: ``traitlets.Undefined`` A callable returning the storage backend for notebook signatures. The default uses an SQLite database. GatewayMappingKernelManager.allow_tracebacks : Bool Default: ``True`` Whether to send tracebacks to clients on exceptions. GatewayMappingKernelManager.allowed_message_types : List Default: ``[]`` White list of allowed kernel message types. When the list is empty, all message types are allowed. GatewayMappingKernelManager.buffer_offline_messages : Bool Default: ``True`` Whether messages from kernels whose frontends have disconnected should be buffered in-memory. When True (default), messages are buffered and replayed on reconnect, avoiding lost messages due to interrupted connectivity. Disable if long-running kernels will produce too much output while no frontends are connected. GatewayMappingKernelManager.cull_busy : Bool Default: ``False`` Whether to consider culling kernels which are busy. Only effective if cull_idle_timeout > 0. GatewayMappingKernelManager.cull_connected : Bool Default: ``False`` Whether to consider culling kernels which have one or more connections. Only effective if cull_idle_timeout > 0. GatewayMappingKernelManager.cull_idle_timeout : Int Default: ``0`` Timeout (in seconds) after which a kernel is considered idle and ready to be culled. Values of 0 or lower disable culling. Very short timeouts may result in kernels being culled for users with poor network connections. GatewayMappingKernelManager.cull_interval : Int Default: ``300`` The interval (in seconds) on which to check for idle kernels exceeding the cull timeout value. GatewayMappingKernelManager.default_kernel_name : Unicode Default: ``'python3'`` The name of the default kernel to start GatewayMappingKernelManager.kernel_info_timeout : Float Default: ``60`` Timeout for giving up on a kernel (in seconds). On starting and restarting kernels, we check whether the kernel is running and responsive by sending kernel_info_requests. This sets the timeout in seconds for how long the kernel can take before being presumed dead. This affects the MappingKernelManager (which handles kernel restarts) and the ZMQChannelsHandler (which handles the startup). GatewayMappingKernelManager.kernel_manager_class : DottedObjectName Default: ``'jupyter_client.ioloop.AsyncIOLoopKernelManager'`` The kernel manager class. This is configurable to allow subclassing of the AsyncKernelManager for customized behavior. GatewayMappingKernelManager.root_dir : Unicode Default: ``''`` No description GatewayMappingKernelManager.shared_context : Bool Default: ``True`` Share a single zmq.Context to talk to all my kernels GatewayMappingKernelManager.traceback_replacement_message : Unicode Default: ``'An exception occurred at runtime, which is not shown due to ...`` Message to print when allow_tracebacks is False, and an exception occurs GatewayMappingKernelManager.untracked_message_types : List Default: ``['comm_info_request', 'comm_info_reply', 'kernel_info_request...`` List of kernel message types excluded from user activity tracking. This should be a superset of the message types sent on any channel other than the shell channel. GatewayMappingKernelManager.use_pending_kernels : Bool Default: ``False`` Whether to make kernels available before the process has started. The kernel has a `.ready` future which can be awaited before connecting GatewayKernelSpecManager.allowed_kernelspecs : Set Default: ``set()`` List of allowed kernel names. By default, all installed kernels are allowed. GatewayKernelSpecManager.ensure_native_kernel : Bool Default: ``True`` If there is no Python kernelspec registered and the IPython kernel is available, ensure it is added to the spec list. GatewayKernelSpecManager.kernel_spec_class : Type Default: ``'jupyter_client.kernelspec.KernelSpec'`` The kernel spec class. This is configurable to allow subclassing of the KernelSpecManager for customized behavior. GatewayKernelSpecManager.whitelist : Set Default: ``set()`` Deprecated, use `KernelSpecManager.allowed_kernelspecs` SessionManager.database_filepath : Unicode Default: ``':memory:'`` The filesystem path to SQLite Database file (e.g. /path/to/session_database.db). By default, the session database is stored in-memory (i.e. `:memory:` setting from sqlite3) and does not persist when the current Jupyter Server shuts down. GatewaySessionManager.database_filepath : Unicode Default: ``':memory:'`` The filesystem path to SQLite Database file (e.g. /path/to/session_database.db). By default, the session database is stored in-memory (i.e. `:memory:` setting from sqlite3) and does not persist when the current Jupyter Server shuts down. BaseKernelWebsocketConnection.kernel_ws_protocol : Unicode Default: ``None`` Preferred kernel message protocol over websocket to use (default: None). If an empty string is passed, select the legacy protocol. If None, the selected protocol will depend on what the front-end supports (usually the most recent protocol supported by the back-end and the front-end). BaseKernelWebsocketConnection.session : Instance Default: ``None`` No description GatewayWebSocketConnection.kernel_ws_protocol : Unicode Default: ``''`` No description GatewayWebSocketConnection.session : Instance Default: ``None`` No description GatewayClient.accept_cookies : Bool Default: ``False`` Accept and manage cookies sent by the service side. This is often useful for load balancers to decide which backend node to use. (JUPYTER_GATEWAY_ACCEPT_COOKIES env var) GatewayClient.allowed_envs : Unicode Default: ``''`` A comma-separated list of environment variable names that will be included, along with their values, in the kernel startup request. The corresponding `client_envs` configuration value must also be set on the Gateway server - since that configuration value indicates which environmental values to make available to the kernel. (JUPYTER_GATEWAY_ALLOWED_ENVS env var) GatewayClient.auth_header_key : Unicode Default: ``''`` The authorization header's key name (typically 'Authorization') used in the HTTP headers. The header will be formatted as:: {'{auth_header_key}': '{auth_scheme} {auth_token}'} If the authorization header key takes a single value, `auth_scheme` should be set to None and 'auth_token' should be configured to use the appropriate value. (JUPYTER_GATEWAY_AUTH_HEADER_KEY env var) GatewayClient.auth_scheme : Unicode Default: ``''`` The auth scheme, added as a prefix to the authorization token used in the HTTP headers. (JUPYTER_GATEWAY_AUTH_SCHEME env var) GatewayClient.auth_token : Unicode Default: ``None`` The authorization token used in the HTTP headers. The header will be formatted as:: {'{auth_header_key}': '{auth_scheme} {auth_token}'} (JUPYTER_GATEWAY_AUTH_TOKEN env var) GatewayClient.ca_certs : Unicode Default: ``None`` The filename of CA certificates or None to use defaults. (JUPYTER_GATEWAY_CA_CERTS env var) GatewayClient.client_cert : Unicode Default: ``None`` The filename for client SSL certificate, if any. (JUPYTER_GATEWAY_CLIENT_CERT env var) GatewayClient.client_key : Unicode Default: ``None`` The filename for client SSL key, if any. (JUPYTER_GATEWAY_CLIENT_KEY env var) GatewayClient.connect_timeout : Float Default: ``40.0`` The time allowed for HTTP connection establishment with the Gateway server. (JUPYTER_GATEWAY_CONNECT_TIMEOUT env var) GatewayClient.env_whitelist : Unicode Default: ``''`` Deprecated, use `GatewayClient.allowed_envs` GatewayClient.event_logger : Instance Default: ``None`` No description GatewayClient.gateway_retry_interval : Float Default: ``1.0`` The time allowed for HTTP reconnection with the Gateway server for the first time. Next will be JUPYTER_GATEWAY_RETRY_INTERVAL multiplied by two in factor of numbers of retries but less than JUPYTER_GATEWAY_RETRY_INTERVAL_MAX. (JUPYTER_GATEWAY_RETRY_INTERVAL env var) GatewayClient.gateway_retry_interval_max : Float Default: ``30.0`` The maximum time allowed for HTTP reconnection retry with the Gateway server. (JUPYTER_GATEWAY_RETRY_INTERVAL_MAX env var) GatewayClient.gateway_retry_max : Int Default: ``5`` The maximum retries allowed for HTTP reconnection with the Gateway server. (JUPYTER_GATEWAY_RETRY_MAX env var) GatewayClient.gateway_token_renewer_class : Type Default: ``'jupyter_server.gateway.gateway_client.GatewayTokenRenewerBase'`` The class to use for Gateway token renewal. (JUPYTER_GATEWAY_TOKEN_RENEWER_CLASS env var) GatewayClient.headers : Unicode Default: ``'{}'`` Additional HTTP headers to pass on the request. This value will be converted to a dict. (JUPYTER_GATEWAY_HEADERS env var) GatewayClient.http_pwd : Unicode Default: ``None`` The password for HTTP authentication. (JUPYTER_GATEWAY_HTTP_PWD env var) GatewayClient.http_user : Unicode Default: ``None`` The username for HTTP authentication. (JUPYTER_GATEWAY_HTTP_USER env var) GatewayClient.kernels_endpoint : Unicode Default: ``'/api/kernels'`` The gateway API endpoint for accessing kernel resources (JUPYTER_GATEWAY_KERNELS_ENDPOINT env var) GatewayClient.kernelspecs_endpoint : Unicode Default: ``'/api/kernelspecs'`` The gateway API endpoint for accessing kernelspecs (JUPYTER_GATEWAY_KERNELSPECS_ENDPOINT env var) GatewayClient.kernelspecs_resource_endpoint : Unicode Default: ``'/kernelspecs'`` The gateway endpoint for accessing kernelspecs resources (JUPYTER_GATEWAY_KERNELSPECS_RESOURCE_ENDPOINT env var) GatewayClient.launch_timeout_pad : Float Default: ``2.0`` Timeout pad to be ensured between KERNEL_LAUNCH_TIMEOUT and request_timeout such that request_timeout >= KERNEL_LAUNCH_TIMEOUT + launch_timeout_pad. (JUPYTER_GATEWAY_LAUNCH_TIMEOUT_PAD env var) GatewayClient.request_timeout : Float Default: ``42.0`` The time allowed for HTTP request completion. (JUPYTER_GATEWAY_REQUEST_TIMEOUT env var) GatewayClient.url : Unicode Default: ``None`` The url of the Kernel or Enterprise Gateway server where kernel specifications are defined and kernel management takes place. If defined, this Notebook server acts as a proxy for all kernel management and kernel specification retrieval. (JUPYTER_GATEWAY_URL env var) GatewayClient.validate_cert : Bool Default: ``True`` For HTTPS requests, determines if server's certificate should be validated or not. (JUPYTER_GATEWAY_VALIDATE_CERT env var) GatewayClient.ws_url : Unicode Default: ``None`` The websocket url of the Kernel or Enterprise Gateway server. If not provided, this value will correspond to the value of the Gateway url with 'ws' in place of 'http'. (JUPYTER_GATEWAY_WS_URL env var) EventLogger.handlers : Handlers Default: ``None`` A list of logging.Handler instances to send events to. When set to None (the default), all events are discarded. ZMQChannelsWebsocketConnection.iopub_data_rate_limit : Float Default: ``1000000`` (bytes/sec) Maximum rate at which stream output can be sent on iopub before they are limited. ZMQChannelsWebsocketConnection.iopub_msg_rate_limit : Float Default: ``1000`` (msgs/sec) Maximum rate at which messages can be sent on iopub before they are limited. ZMQChannelsWebsocketConnection.kernel_ws_protocol : Unicode Default: ``None`` Preferred kernel message protocol over websocket to use (default: None). If an empty string is passed, select the legacy protocol. If None, the selected protocol will depend on what the front-end supports (usually the most recent protocol supported by the back-end and the front-end). ZMQChannelsWebsocketConnection.limit_rate : Bool Default: ``True`` Whether to limit the rate of IOPub messages (default: True). If True, use iopub_msg_rate_limit, iopub_data_rate_limit and/or rate_limit_window to tune the rate. ZMQChannelsWebsocketConnection.rate_limit_window : Float Default: ``3`` (sec) Time window used to check the message and data rate limits. ZMQChannelsWebsocketConnection.session : Instance Default: ``None`` No description