# IPython kernel options

These options can be used in `ipython_notebook_config.py` or in `ipython_qtconsole_config.py`

IPKernelApp.auto_create : Bool

  Default: False

  Whether to create profile dir if it doesn’t exist

IPKernelApp.code_to_run : Unicode

  Default: ‘’

  Execute the given command string.

IPKernelApp.connection_file : Unicode

  Default: ‘’

  JSON file in which to store connection info [default: kernel-<pid>.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.

IPKernelApp.control_port : Integer

  Default: 0

  set the control (ROUTER) port [default: random]

IPKernelApp.copy_config_files : Bool

  Default: False

  Whether to install the default config files into the profile dir. If a new profile is being created, and IPython contains config files for that profile, then they will be staged into the new directory. Otherwise, default config files will be automatically generated.

IPKernelApp.displayhook_class : DottedObjectName

  Default: ‘IPython.kernel.zmq.displayhook.ZMQDisplayHook’

  The importstring for the DisplayHook factory

IPKernelApp.exec_PYTHONSTARTUP : Bool

  Default: True

  Run the file referenced by the PYTHONSTARTUP environment variable at IPython startup.

IPKernelApp.exec_files : List

  Default: []

  List of files to run at IPython startup.

IPKernelApp.exec_lines : List

  Default: []

  lines of code to run at IPython startup.

IPKernelApp.extensions : List

  Default: []

  A list of dotted module names of IPython extensions to load.

IPKernelApp.extra_config_file : Unicode

  Default: u’‘

  Path to an extra config file to load.

  If specified, load this config file in addition to any other IPython config.

IPKernelApp.extra_extension : Unicode

  Default: ‘’

  dotted module name of an IPython extension to load.

IPKernelApp.file_to_run : Unicode

  Default: ‘’

  A file to be run

IPKernelApp.gui : ‘glut’|’gtk’|’gtk3’|’none’|’osx’|’pyglet’|’qt’|’qt4’|’tk’|’wx’
  Enable GUI event loop integration with any of (‘glut’, ‘gtk’, ‘gtk3’, ‘none’, ‘osx’, ‘pyglet’, ‘qt’, ‘qt4’, ‘tk’, ‘wx’).
IPKernelApp.hb_port : Integer

  Default: 0

  set the heartbeat port [default: random]

IPKernelApp.hide_initial_ns : Bool

  Default: True

  Should variables loaded at startup (by startup files, exec_lines, etc.) be hidden from tools like %who?

IPKernelApp.interrupt : Integer

  Default: 0

  ONLY USED ON WINDOWS Interrupt this process when the parent is signaled.

IPKernelApp.iopub_port : Integer

  Default: 0

  set the iopub (PUB) port [default: random]

IPKernelApp.ip : Unicode

  Default: u’‘

  Set the IP or interface on which the kernel will listen.

IPKernelApp.ipython_dir : Unicode

  Default: u’‘

  The name of the IPython directory. This directory is used for logging configuration (through profiles), history storage, etc. The default is usually $HOME/.ipython. This options can also be specified through the environment variable IPYTHONDIR.

IPKernelApp.kernel_class : DottedObjectName

  Default: ‘IPython.kernel.zmq.ipkernel.Kernel’

  The Kernel subclass to be used.

  This should allow easy re-use of the IPKernelApp entry point to configure and launch kernels other than IPython’s own.

IPKernelApp.log_datefmt : Unicode

  Default: ‘%Y-%m-%d %H:%M:%S’

  The date format used by logging formatters for %(asctime)s

IPKernelApp.log_format : Unicode

  Default: ‘[%(name)s]%(highlevel)s %(message)s’

  The Logging format template

IPKernelApp.log_level : 0|10|20|30|40|50|’DEBUG’|’INFO’|’WARN’|’ERROR’|’CRITICAL’

  Default: 30

  Set the log level by value or name.

IPKernelApp.matplotlib : ‘auto’|’gtk’|’gtk3’|’inline’|’nbagg’|’osx’|’qt’|’qt4’|’qt5’|’tk’|’wx’
  Configure matplotlib for interactive use with the default matplotlib backend.
IPKernelApp.module_to_run : Unicode

  Default: ‘’

  Run the module as a script.

IPKernelApp.no_stderr : Bool

  Default: False

  redirect stderr to the null device

IPKernelApp.no_stdout : Bool

  Default: False

  redirect stdout to the null device

IPKernelApp.outstream_class : DottedObjectName

  Default: ‘IPython.kernel.zmq.iostream.OutStream’

  The importstring for the OutStream factory

IPKernelApp.overwrite : Bool

  Default: False

  Whether to overwrite existing config files when copying

IPKernelApp.parent_appname : Unicode

  Default: u’‘

  No description

IPKernelApp.parent_handle : Integer

  Default: 0

  kill this process if its parent dies. On Windows, the argument specifies the HANDLE of the parent process, otherwise it is simply boolean.

IPKernelApp.profile : Unicode

  Default: u’default’

  The IPython profile to use.

IPKernelApp.pylab : ‘auto’|’gtk’|’gtk3’|’inline’|’nbagg’|’osx’|’qt’|’qt4’|’qt5’|’tk’|’wx’
  Pre-load matplotlib and numpy for interactive use, selecting a particular matplotlib backend and loop integration.
IPKernelApp.pylab_import_all : Bool

  Default: True

  If true, IPython will populate the user namespace with numpy, pylab, etc. and an `import *` is done from numpy and pylab, when using pylab mode.

  When False, pylab mode should not import any names into the user namespace.

IPKernelApp.shell_port : Integer

  Default: 0

  set the shell (ROUTER) port [default: random]

IPKernelApp.stdin_port : Integer

  Default: 0

  set the stdin (ROUTER) port [default: random]

IPKernelApp.transport : ‘tcp’|’ipc’

  Default: ‘tcp’

  No description

IPKernelApp.verbose_crash : Bool

  Default: False

  Create a massive crash report when IPython encounters what may be an internal error. The default is to append a short message to the usual traceback

Kernel._darwin_app_nap : Bool

  Default: True

  Whether to use appnope for compatiblity with OS X App Nap.

  Only affects OS X >= 10.9.

Kernel._execute_sleep : Float

  Default: 0.0005

  No description

Kernel._poll_interval : Float

  Default: 0.05

  No description

ZMQInteractiveShell.ast_node_interactivity : ‘all’|’last’|’last_expr’|’none’

  Default: ‘last_expr’

  ‘all’, ‘last’, ‘last_expr’ or ‘none’, specifying which nodes should be run interactively (displaying output from expressions).

ZMQInteractiveShell.ast_transformers : List

  Default: []

  A list of ast.NodeTransformer subclass instances, which will be applied to user input before code is run.

ZMQInteractiveShell.autocall : 0|1|2

  Default: 0

  Make IPython automatically call any callable object even if you didn’t type explicit parentheses. For example, ‘str 43’ becomes ‘str(43)’ automatically. The value can be ‘0’ to disable the feature, ‘1’ for ‘smart’ autocall, where it is not applied if there are no more arguments on the line, and ‘2’ for ‘full’ autocall, where all callable objects are automatically called (even if no arguments are present).

ZMQInteractiveShell.automagic : CBool

  Default: True

  Enable magic commands to be called without the leading %.

ZMQInteractiveShell.cache_size : Integer

  Default: 1000

  Set the size of the output cache. The default is 1000, you can change it permanently in your config file. Setting it to 0 completely disables the caching system, and the minimum value accepted is 20 (if you provide a value less than 20, it is reset to 0 and a warning is issued). This limit is defined because otherwise you’ll spend more time re-flushing a too small cache than working

ZMQInteractiveShell.color_info : CBool

  Default: True

  Use colors for displaying information about objects. Because this information is passed through a pager (like ‘less’), and some pagers get confused with color codes, this capability can be turned off.

ZMQInteractiveShell.colors : ‘NoColor’|’LightBG’|’Linux’

  Default: ‘LightBG’

  Set the color scheme (NoColor, Linux, or LightBG).

ZMQInteractiveShell.debug : CBool

  Default: False

  No description

ZMQInteractiveShell.deep_reload : CBool

  Default: False

  Enable deep (recursive) reloading by default. IPython can use the deep_reload module which reloads changes in modules recursively (it replaces the reload() function, so you don’t need to change anything to use it). deep_reload() forces a full reload of modules whose code may have changed, which the default reload() function does not. When deep_reload is off, IPython will use the normal reload(), but deep_reload will still be available as dreload().

ZMQInteractiveShell.disable_failing_post_execute : CBool

  Default: False

  Don’t call post-execute functions that have failed in the past.

ZMQInteractiveShell.history_length : Integer

  Default: 10000

  No description

ZMQInteractiveShell.ipython_dir : Unicode

  Default: ‘’

  No description

ZMQInteractiveShell.logappend : Unicode

  Default: ‘’

  Start logging to the given file in append mode.

ZMQInteractiveShell.logfile : Unicode

  Default: ‘’

  The name of the logfile to use.

ZMQInteractiveShell.logstart : CBool

  Default: False

  Start logging to the default log file.

ZMQInteractiveShell.multiline_history : CBool

  Default: True

  Save multi-line entries as one entry in readline history

ZMQInteractiveShell.object_info_string_level : 0|1|2

  Default: 0

  No description

ZMQInteractiveShell.pdb : CBool

  Default: False

  Automatically call the pdb debugger after every exception.

ZMQInteractiveShell.prompt_in1 : Unicode

  Default: ‘In [\#]: ‘

  Deprecated, use PromptManager.in_template

ZMQInteractiveShell.prompt_in2 : Unicode

  Default: ‘ .\D.: ‘

  Deprecated, use PromptManager.in2_template

ZMQInteractiveShell.prompt_out : Unicode

  Default: ‘Out[\#]: ‘

  Deprecated, use PromptManager.out_template

ZMQInteractiveShell.prompts_pad_left : CBool

  Default: True

  Deprecated, use PromptManager.justify

ZMQInteractiveShell.quiet : CBool

  Default: False

  No description

ZMQInteractiveShell.readline_parse_and_bind : List

  Default: [‘tab: complete’, ‘”\C-l”: clear-screen’, ‘set show-all-if-a...

  No description

ZMQInteractiveShell.readline_remove_delims : Unicode

  Default: ‘-/~’

  No description

ZMQInteractiveShell.separate_in : SeparateUnicode

  Default: ‘\n’

  No description

ZMQInteractiveShell.separate_out : SeparateUnicode

  Default: ‘’

  No description

ZMQInteractiveShell.separate_out2 : SeparateUnicode

  Default: ‘’

  No description

ZMQInteractiveShell.show_rewritten_input : CBool

  Default: True

  Show rewritten input, e.g. for autocall.

ZMQInteractiveShell.wildcards_case_sensitive : CBool

  Default: True

  No description

ZMQInteractiveShell.xmode : ‘Context’|’Plain’|’Verbose’

  Default: ‘Context’

  No description

ProfileDir.location : Unicode

  Default: u’‘

  Set the profile location directly. This overrides the logic used by the profile option.

Session.buffer_threshold : Integer

  Default: 1024

  Threshold (in bytes) beyond which an object’s buffer should be extracted to avoid pickling.

Session.copy_threshold : Integer

  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 : Integer

  Default: 65536

  The maximum number of digests to remember.

  The digest history will be culled when it exceeds this value.

Session.item_threshold : Integer

  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: ‘’

  execution key, for extra authentication.

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: u’‘

  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: u’buildd’

  Username for the Session. Default is your system username.