# IPython kernel options

These options can be used in `ipython_kernel_config.py`. The kernel also respects any options in `ipython_config.py`

ConnectionFileMixin.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.

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
: ‘tcp’|’ipc’

  Default: `'tcp'`

  No description

InteractiveShellApp.code_to_run
: Unicode

  Default: `''`

  Execute the given command string.

InteractiveShellApp.exec_PYTHONSTARTUP
: Bool

  Default: `True`

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

InteractiveShellApp.exec_files
: List

  Default: `[]`

  List of files to run at IPython startup.

InteractiveShellApp.exec_lines
: List

  Default: `[]`

  lines of code to run at IPython startup.

InteractiveShellApp.extensions
: List

  Default: `[]`

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

InteractiveShellApp.extra_extension
: Unicode

  Default: `''`

  dotted module name of an IPython extension to load.

InteractiveShellApp.file_to_run
: Unicode

  Default: `''`

  A file to be run

InteractiveShellApp.gui
: ‘glut’|’gtk’|’gtk2’|’gtk3’|’osx’|’pyglet’|’qt’|’qt4’|’qt5’|’tk’|’wx’|’gtk2’|’qt4’

  Default: `None`

  Enable GUI event loop integration with any of (‘glut’, ‘gtk’, ‘gtk2’, ‘gtk3’, ‘osx’, ‘pyglet’, ‘qt’, ‘qt4’, ‘qt5’, ‘tk’, ‘wx’, ‘gtk2’, ‘qt4’).

InteractiveShellApp.hide_initial_ns
: Bool

  Default: `True`

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

InteractiveShellApp.matplotlib
: ‘auto’|’agg’|’gtk’|’gtk3’|’inline’|’ipympl’|’nbagg’|’notebook’|’osx’|’qt’|’qt4’|’qt5’|’tk’|’wx’

  Default: `None`

  Configure matplotlib for interactive use with the default matplotlib backend.

InteractiveShellApp.module_to_run
: Unicode

  Default: `''`

  Run the module as a script.

InteractiveShellApp.pylab
: ‘auto’|’agg’|’gtk’|’gtk3’|’inline’|’ipympl’|’nbagg’|’notebook’|’osx’|’qt’|’qt4’|’qt5’|’tk’|’wx’

  Default: `None`

  Pre-load matplotlib and numpy for interactive use, selecting a particular matplotlib backend and loop integration.

InteractiveShellApp.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.

InteractiveShellApp.reraise_ipython_extension_failures
: Bool

  Default: `False`

  Reraise exceptions encountered loading IPython extensions?

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

  Default: `30`

  Set the log level by value or name.

BaseIPythonApplication.auto_create
: Bool

  Default: `False`

  Whether to create profile dir if it doesn’t exist

BaseIPythonApplication.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.

BaseIPythonApplication.extra_config_file
: Unicode

  Default: `''`

  Path to an extra config file to load.

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

BaseIPythonApplication.ipython_dir
: Unicode

  Default: `''`

  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 option can also be specified through the environment variable IPYTHONDIR.

BaseIPythonApplication.overwrite
: Bool

  Default: `False`

  Whether to overwrite existing config files when copying

BaseIPythonApplication.profile
: Unicode

  Default: `'default'`

  The IPython profile to use.

BaseIPythonApplication.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

IPKernelApp.displayhook_class
: DottedObjectName

  Default: `'ipykernel.displayhook.ZMQDisplayHook'`

  The importstring for the DisplayHook factory

IPKernelApp.interrupt
: Int

  Default: `0`

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

IPKernelApp.kernel_class
: Type

  Default: `'ipykernel.ipkernel.IPythonKernel'`

  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.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: `'ipykernel.iostream.OutStream'`

  The importstring for the OutStream factory

IPKernelApp.parent_handle
: Int

  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.

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

IPythonKernel.help_links
: List

  Default: `[{'text': 'Python', 'url': 'http://docs.python.org/3.6'}, {'t...`

  No description

InteractiveShell.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).

InteractiveShell.ast_transformers
: List

  Default: `[]`

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

InteractiveShell.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).

InteractiveShell.autoindent
: Bool

  Default: `True`

  Autoindent IPython code entered interactively.

InteractiveShell.automagic
: Bool

  Default: `True`

  Enable magic commands to be called without the leading %.

InteractiveShell.banner1
: Unicode

  Default: `'Python 3.6.2 (default, Oct 3 2017, 14:02:38) \\nType "copyri...`

  The part of the banner to be printed before the profile

InteractiveShell.banner2
: Unicode

  Default: `''`

  The part of the banner to be printed after the profile

InteractiveShell.cache_size
: Int

  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

InteractiveShell.color_info
: Bool

  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.

InteractiveShell.colors
: ‘Neutral’|’NoColor’|’LightBG’|’Linux’

  Default: `'Neutral'`

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

InteractiveShell.debug
: Bool

  Default: `False`

  No description

InteractiveShell.deep_reload
: Bool

  Default: `False`

  Deprecated

  Will be removed in IPython 6.0

  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().

InteractiveShell.disable_failing_post_execute
: Bool

  Default: `False`

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

InteractiveShell.display_page
: Bool

  Default: `False`

  If True, anything that would be passed to the pager will be displayed as regular output instead.

InteractiveShell.enable_html_pager
: Bool

  Default: `False`

  (Provisional API) enables html representation in mime bundles sent to pagers.

InteractiveShell.history_length
: Int

  Default: `10000`

  Total length of command history

InteractiveShell.history_load_length
: Int

  Default: `1000`

  The number of saved history entries to be loaded into the history buffer at startup.

InteractiveShell.ipython_dir
: Unicode

  Default: `''`

  No description

InteractiveShell.logappend
: Unicode

  Default: `''`

  Start logging to the given file in append mode. Use `logfile` to specify a log file to overwrite logs to.

InteractiveShell.logfile
: Unicode

  Default: `''`

  The name of the logfile to use.

InteractiveShell.logstart
: Bool

  Default: `False`

  Start logging to the default log file in overwrite mode. Use `logappend` to specify a log file to append logs to.

InteractiveShell.object_info_string_level
: 0|1|2

  Default: `0`

  No description

InteractiveShell.pdb
: Bool

  Default: `False`

  Automatically call the pdb debugger after every exception.

InteractiveShell.prompt_in1
: Unicode

  Default: `'In [\\#]: '`

  Deprecated since IPython 4.0 and ignored since 5.0, set TerminalInteractiveShell.prompts object directly.

InteractiveShell.prompt_in2
: Unicode

  Default: `' .\\D.: '`

  Deprecated since IPython 4.0 and ignored since 5.0, set TerminalInteractiveShell.prompts object directly.

InteractiveShell.prompt_out
: Unicode

  Default: `'Out[\\#]: '`

  Deprecated since IPython 4.0 and ignored since 5.0, set TerminalInteractiveShell.prompts object directly.

InteractiveShell.prompts_pad_left
: Bool

  Default: `True`

  Deprecated since IPython 4.0 and ignored since 5.0, set TerminalInteractiveShell.prompts object directly.

InteractiveShell.quiet
: Bool

  Default: `False`

  No description

InteractiveShell.separate_in
: SeparateUnicode

  Default: `'\\n'`

  No description

InteractiveShell.separate_out
: SeparateUnicode

  Default: `''`

  No description

InteractiveShell.separate_out2
: SeparateUnicode

  Default: `''`

  No description

InteractiveShell.show_rewritten_input
: Bool

  Default: `True`

  Show rewritten input, e.g. for autocall.

InteractiveShell.sphinxify_docstring
: Bool

  Default: `False`

  Enables rich html representation of docstrings. (This requires the docrepr module).

InteractiveShell.wildcards_case_sensitive
: Bool

  Default: `True`

  No description

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

  Default: `'Context'`

  No description

ProfileDir.location
: Unicode

  Default: `''`

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

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.