Important

This documentation covers IPython versions 6.0 and higher. Beginning with version 6.0, IPython stopped supporting compatibility with Python versions lower than 3.3 including all versions of Python 2.7.

If you are looking for an IPython version compatible with Python 2.7, please use the IPython 5.x LTS release and refer to its documentation (LTS is the long term support release).

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

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.

Trait type

Unicode

ConnectionFileMixin.control_port

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

Trait type

Int

Default

0

ConnectionFileMixin.hb_port

set the heartbeat port [default: random]

Trait type

Int

Default

0

ConnectionFileMixin.iopub_port

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

Trait type

Int

Default

0

ConnectionFileMixin.ip

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!

Trait type

Unicode

ConnectionFileMixin.shell_port

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

Trait type

Int

Default

0

ConnectionFileMixin.stdin_port

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

Trait type

Int

Default

0

ConnectionFileMixin.transport

No description

Options

'tcp', 'ipc'

Default

'tcp'

InteractiveShellApp.code_to_run

Execute the given command string.

Trait type

Unicode

CLI option

-c

InteractiveShellApp.exec_PYTHONSTARTUP

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

Trait type

Bool

Default

True

InteractiveShellApp.exec_files

List of files to run at IPython startup.

Trait type

List

InteractiveShellApp.exec_lines

lines of code to run at IPython startup.

Trait type

List

InteractiveShellApp.extensions

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

Trait type

List

InteractiveShellApp.extra_extension

DEPRECATED. Dotted module name of a single extra IPython extension to load.

Only one extension can be added this way.

Only used with traitlets < 5.0, plural extra_extensions list is used in traitlets 5.

Trait type

Unicode

InteractiveShellApp.extra_extensions

Dotted module name(s) of one or more IPython extensions to load.

For specifying extra extensions to load on the command-line.

New in version 7.10.

Trait type

List

CLI option

--ext

InteractiveShellApp.file_to_run

A file to be run

Trait type

Unicode

InteractiveShellApp.gui

Enable GUI event loop integration with any of (‘asyncio’, ‘glut’, ‘gtk’, ‘gtk2’, ‘gtk3’, ‘gtk4’, ‘osx’, ‘pyglet’, ‘qt’, ‘qt4’, ‘qt5’, ‘qt6’, ‘tk’, ‘wx’, ‘gtk2’, ‘qt4’).

Options

'asyncio', 'glut', 'gtk', 'gtk2', 'gtk3', 'gtk4', 'osx', 'pyglet', 'qt', 'qt4', 'qt5', 'qt6', 'tk', 'wx', 'gtk2', 'qt4'

CLI option

--gui

InteractiveShellApp.hide_initial_ns

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

Trait type

Bool

Default

True

InteractiveShellApp.ignore_cwd

If True, IPython will not add the current working directory to sys.path. When False, the current working directory is added to sys.path, allowing imports of modules defined in the current directory.

Trait type

Bool

Default

False

CLI option

--ignore-cwd

InteractiveShellApp.matplotlib

Configure matplotlib for interactive use with the default matplotlib backend.

Options

'auto', 'agg', 'gtk', 'gtk3', 'gtk4', 'inline', 'ipympl', 'nbagg', 'notebook', 'osx', 'pdf', 'ps', 'qt', 'qt4', 'qt5', 'qt6', 'svg', 'tk', 'widget', 'wx'

CLI option

--matplotlib

InteractiveShellApp.module_to_run

Run the module as a script.

Trait type

Unicode

CLI option

-m

InteractiveShellApp.pylab

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

Options

'auto', 'agg', 'gtk', 'gtk3', 'gtk4', 'inline', 'ipympl', 'nbagg', 'notebook', 'osx', 'pdf', 'ps', 'qt', 'qt4', 'qt5', 'qt6', 'svg', 'tk', 'widget', 'wx'

CLI option

--pylab

InteractiveShellApp.pylab_import_all

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.

Trait type

Bool

Default

True

InteractiveShellApp.reraise_ipython_extension_failures

Reraise exceptions encountered loading IPython extensions?

Trait type

Bool

Default

False

Application.log_datefmt

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

Trait type

Unicode

Default

'%Y-%m-%d %H:%M:%S'

Application.log_format

The Logging format template

Trait type

Unicode

Default

'[%(name)s]%(highlevel)s %(message)s'

Application.log_level

Set the log level by value or name.

Options

0, 10, 20, 30, 40, 50, 'DEBUG', 'INFO', 'WARN', 'ERROR', 'CRITICAL'

Default

30

CLI option

--log-level

Application.show_config

Instead of starting the Application, dump configuration to stdout

Trait type

Bool

Default

False

Application.show_config_json

Instead of starting the Application, dump configuration to stdout (as JSON)

Trait type

Bool

Default

False

BaseIPythonApplication.auto_create

Whether to create profile dir if it doesn’t exist

Trait type

Bool

Default

False

BaseIPythonApplication.copy_config_files

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.

Trait type

Bool

Default

False

BaseIPythonApplication.extra_config_file

Path to an extra config file to load.

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

Trait type

Unicode

CLI option

--config

BaseIPythonApplication.ipython_dir

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.

Trait type

Unicode

CLI option

--ipython-dir

BaseIPythonApplication.log_datefmt

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

Trait type

Unicode

Default

'%Y-%m-%d %H:%M:%S'

BaseIPythonApplication.log_format

The Logging format template

Trait type

Unicode

Default

'[%(name)s]%(highlevel)s %(message)s'

BaseIPythonApplication.log_level

Set the log level by value or name.

Options

0, 10, 20, 30, 40, 50, 'DEBUG', 'INFO', 'WARN', 'ERROR', 'CRITICAL'

Default

30

BaseIPythonApplication.overwrite

Whether to overwrite existing config files when copying

Trait type

Bool

Default

False

BaseIPythonApplication.profile

The IPython profile to use.

Trait type

Unicode

Default

'default'

CLI option

--profile

BaseIPythonApplication.show_config

Instead of starting the Application, dump configuration to stdout

Trait type

Bool

Default

False

BaseIPythonApplication.show_config_json

Instead of starting the Application, dump configuration to stdout (as JSON)

Trait type

Bool

Default

False

BaseIPythonApplication.verbose_crash

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

Trait type

Bool

Default

False

IPKernelApp.auto_create

Whether to create profile dir if it doesn’t exist

Trait type

Bool

Default

False

IPKernelApp.capture_fd_output

Attempt to capture and forward low-level output, e.g. produced by Extension libraries.

Trait type

Bool

Default

True

IPKernelApp.code_to_run

Execute the given command string.

Trait type

Unicode

IPKernelApp.connection_file

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.

Trait type

Unicode

CLI option

-f

IPKernelApp.control_port

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

Trait type

Int

Default

0

CLI option

--control

IPKernelApp.copy_config_files

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.

Trait type

Bool

Default

False

IPKernelApp.displayhook_class

The importstring for the DisplayHook factory

Trait type

DottedObjectName

Default

'ipykernel.displayhook.ZMQDisplayHook'

IPKernelApp.exec_PYTHONSTARTUP

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

Trait type

Bool

Default

True

IPKernelApp.exec_files

List of files to run at IPython startup.

Trait type

List

IPKernelApp.exec_lines

lines of code to run at IPython startup.

Trait type

List

IPKernelApp.extensions

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

Trait type

List

IPKernelApp.extra_config_file

Path to an extra config file to load.

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

Trait type

Unicode

IPKernelApp.extra_extension

DEPRECATED. Dotted module name of a single extra IPython extension to load.

Only one extension can be added this way.

Only used with traitlets < 5.0, plural extra_extensions list is used in traitlets 5.

Trait type

Unicode

IPKernelApp.extra_extensions

Dotted module name(s) of one or more IPython extensions to load.

For specifying extra extensions to load on the command-line.

New in version 7.10.

Trait type

List

IPKernelApp.file_to_run

A file to be run

Trait type

Unicode

IPKernelApp.gui

Enable GUI event loop integration with any of (‘asyncio’, ‘glut’, ‘gtk’, ‘gtk2’, ‘gtk3’, ‘gtk4’, ‘osx’, ‘pyglet’, ‘qt’, ‘qt4’, ‘qt5’, ‘qt6’, ‘tk’, ‘wx’, ‘gtk2’, ‘qt4’).

Options

'asyncio', 'glut', 'gtk', 'gtk2', 'gtk3', 'gtk4', 'osx', 'pyglet', 'qt', 'qt4', 'qt5', 'qt6', 'tk', 'wx', 'gtk2', 'qt4'

IPKernelApp.hb_port

set the heartbeat port [default: random]

Trait type

Int

Default

0

CLI option

--hb

IPKernelApp.hide_initial_ns

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

Trait type

Bool

Default

True

IPKernelApp.ignore_cwd

If True, IPython will not add the current working directory to sys.path. When False, the current working directory is added to sys.path, allowing imports of modules defined in the current directory.

Trait type

Bool

Default

False

IPKernelApp.interrupt

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

Trait type

Int

Default

0

IPKernelApp.iopub_port

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

Trait type

Int

Default

0

CLI option

--iopub

IPKernelApp.ip

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!

Trait type

Unicode

CLI option

--ip

IPKernelApp.ipython_dir

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.

Trait type

Unicode

IPKernelApp.kernel_class

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.

Trait type

Type

Default

'ipykernel.ipkernel.IPythonKernel'

IPKernelApp.log_datefmt

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

Trait type

Unicode

Default

'%Y-%m-%d %H:%M:%S'

IPKernelApp.log_format

The Logging format template

Trait type

Unicode

Default

'[%(name)s]%(highlevel)s %(message)s'

IPKernelApp.log_level

Set the log level by value or name.

Options

0, 10, 20, 30, 40, 50, 'DEBUG', 'INFO', 'WARN', 'ERROR', 'CRITICAL'

Default

30

IPKernelApp.matplotlib

Configure matplotlib for interactive use with the default matplotlib backend.

Options

'auto', 'agg', 'gtk', 'gtk3', 'gtk4', 'inline', 'ipympl', 'nbagg', 'notebook', 'osx', 'pdf', 'ps', 'qt', 'qt4', 'qt5', 'qt6', 'svg', 'tk', 'widget', 'wx'

IPKernelApp.module_to_run

Run the module as a script.

Trait type

Unicode

IPKernelApp.no_stderr

redirect stderr to the null device

Trait type

Bool

Default

False

CLI option

--no-stderr

IPKernelApp.no_stdout

redirect stdout to the null device

Trait type

Bool

Default

False

CLI option

--no-stdout

IPKernelApp.outstream_class

The importstring for the OutStream factory

Trait type

DottedObjectName

Default

'ipykernel.iostream.OutStream'

IPKernelApp.overwrite

Whether to overwrite existing config files when copying

Trait type

Bool

Default

False

IPKernelApp.parent_handle

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

Trait type

Int

Default

0

IPKernelApp.profile

The IPython profile to use.

Trait type

Unicode

Default

'default'

IPKernelApp.pylab

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

Options

'auto', 'agg', 'gtk', 'gtk3', 'gtk4', 'inline', 'ipympl', 'nbagg', 'notebook', 'osx', 'pdf', 'ps', 'qt', 'qt4', 'qt5', 'qt6', 'svg', 'tk', 'widget', 'wx'

IPKernelApp.pylab_import_all

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.

Trait type

Bool

Default

True

IPKernelApp.quiet

Only send stdout/stderr to output stream

Trait type

Bool

Default

True

IPKernelApp.reraise_ipython_extension_failures

Reraise exceptions encountered loading IPython extensions?

Trait type

Bool

Default

False

IPKernelApp.shell_port

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

Trait type

Int

Default

0

CLI option

--shell

IPKernelApp.show_config

Instead of starting the Application, dump configuration to stdout

Trait type

Bool

Default

False

IPKernelApp.show_config_json

Instead of starting the Application, dump configuration to stdout (as JSON)

Trait type

Bool

Default

False

IPKernelApp.stdin_port

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

Trait type

Int

Default

0

CLI option

--stdin

IPKernelApp.transport

No description

Options

'tcp', 'ipc'

Default

'tcp'

CLI option

--transport

IPKernelApp.trio_loop

Set main event loop.

Trait type

Bool

Default

False

IPKernelApp.verbose_crash

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

Trait type

Bool

Default

False

Kernel._darwin_app_nap

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

Only affects OS X >= 10.9.

Trait type

Bool

Default

True

Kernel._execute_sleep

No description

Trait type

Float

Default

0.0005

Kernel._poll_interval

No description

Trait type

Float

Default

0.01

Kernel.stop_on_error_timeout

time (in seconds) to wait for messages to arrive when aborting queued requests after an error.

Requests that arrive within this window after an error will be cancelled.

Increase in the event of unusually slow network causing significant delays, which can manifest as e.g. “Run all” in a notebook aborting some, but not all, messages after an error.

Trait type

Float

Default

0.0

IPythonKernel._darwin_app_nap

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

Only affects OS X >= 10.9.

Trait type

Bool

Default

True

IPythonKernel._execute_sleep

No description

Trait type

Float

Default

0.0005

IPythonKernel._poll_interval

No description

Trait type

Float

Default

0.01

No description

Trait type

List

IPythonKernel.stop_on_error_timeout

time (in seconds) to wait for messages to arrive when aborting queued requests after an error.

Requests that arrive within this window after an error will be cancelled.

Increase in the event of unusually slow network causing significant delays, which can manifest as e.g. “Run all” in a notebook aborting some, but not all, messages after an error.

Trait type

Float

Default

0.0

IPythonKernel.use_experimental_completions

Set this flag to False to deactivate the use of experimental IPython completion APIs.

Trait type

Bool

Default

True

InteractiveShell.ast_node_interactivity

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

Options

'all', 'last', 'last_expr', 'none', 'last_expr_or_assign'

Default

'last_expr'

InteractiveShell.ast_transformers

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

Trait type

List

InteractiveShell.autoawait

Automatically run await statement in the top level repl.

Trait type

Bool

Default

True

InteractiveShell.autocall

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).

Options

0, 1, 2

Default

0

CLI option

--autocall

InteractiveShell.autoindent

Autoindent IPython code entered interactively.

Trait type

Bool

Default

True

CLI option

--autoindent

InteractiveShell.automagic

Enable magic commands to be called without the leading %.

Trait type

Bool

Default

True

CLI option

--automagic

InteractiveShell.banner1

The part of the banner to be printed before the profile

Trait type

Unicode

Default

"Python 3.8.12 (default, Oct 12 2021, 13:49:34) \\nType 'copyr...

InteractiveShell.banner2

The part of the banner to be printed after the profile

Trait type

Unicode

InteractiveShell.cache_size

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 3 (if you provide a value less than 3, 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

Trait type

Int

Default

1000

CLI option

--cache-size

InteractiveShell.color_info

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.

Trait type

Bool

Default

True

CLI option

--color-info

InteractiveShell.colors

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

Options

'Neutral', 'NoColor', 'LightBG', 'Linux'

Default

'Neutral'

CLI option

--colors

InteractiveShell.debug

No description

Trait type

Bool

Default

False

InteractiveShell.disable_failing_post_execute

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

Trait type

Bool

Default

False

InteractiveShell.display_page

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

Trait type

Bool

Default

False

InteractiveShell.enable_html_pager

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

Trait type

Bool

Default

False

InteractiveShell.history_length

Total length of command history

Trait type

Int

Default

10000

InteractiveShell.history_load_length

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

Trait type

Int

Default

1000

InteractiveShell.ipython_dir

No description

Trait type

Unicode

InteractiveShell.logappend

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

Trait type

Unicode

CLI option

--logappend

InteractiveShell.logfile

The name of the logfile to use.

Trait type

Unicode

CLI option

--logfile

InteractiveShell.logstart

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

Trait type

Bool

Default

False

InteractiveShell.loop_runner

Select the loop runner that will be used to execute top-level asynchronous code

Trait type

Any

Default

'IPython.core.interactiveshell._asyncio_runner'

InteractiveShell.object_info_string_level

No description

Options

0, 1, 2

Default

0

InteractiveShell.pdb

Automatically call the pdb debugger after every exception.

Trait type

Bool

Default

False

CLI option

--pdb

InteractiveShell.prompt_in1

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

Trait type

Unicode

Default

'In [\\#]: '

InteractiveShell.prompt_in2

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

Trait type

Unicode

Default

'   .\\D.: '

InteractiveShell.prompt_out

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

Trait type

Unicode

Default

'Out[\\#]: '

InteractiveShell.prompts_pad_left

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

Trait type

Bool

Default

True

InteractiveShell.quiet

No description

Trait type

Bool

Default

False

InteractiveShell.separate_in

No description

Trait type

SeparateUnicode

Default

'\\n'

InteractiveShell.separate_out

No description

Trait type

SeparateUnicode

InteractiveShell.separate_out2

No description

Trait type

SeparateUnicode

InteractiveShell.show_rewritten_input

Show rewritten input, e.g. for autocall.

Trait type

Bool

Default

True

InteractiveShell.sphinxify_docstring

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

Trait type

Bool

Default

False

InteractiveShell.wildcards_case_sensitive

No description

Trait type

Bool

Default

True

InteractiveShell.xmode

Switch modes for the IPython exception handlers.

Options

'Context', 'Plain', 'Verbose', 'Minimal'

Default

'Context'

ZMQInteractiveShell.ast_node_interactivity

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

Options

'all', 'last', 'last_expr', 'none', 'last_expr_or_assign'

Default

'last_expr'

ZMQInteractiveShell.ast_transformers

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

Trait type

List

ZMQInteractiveShell.autoawait

Automatically run await statement in the top level repl.

Trait type

Bool

Default

True

ZMQInteractiveShell.autocall

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).

Options

0, 1, 2

Default

0

ZMQInteractiveShell.automagic

Enable magic commands to be called without the leading %.

Trait type

Bool

Default

True

ZMQInteractiveShell.banner1

The part of the banner to be printed before the profile

Trait type

Unicode

Default

"Python 3.8.12 (default, Oct 12 2021, 13:49:34) \\nType 'copyr...

ZMQInteractiveShell.banner2

The part of the banner to be printed after the profile

Trait type

Unicode

ZMQInteractiveShell.cache_size

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 3 (if you provide a value less than 3, 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

Trait type

Int

Default

1000

ZMQInteractiveShell.color_info

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.

Trait type

Bool

Default

True

ZMQInteractiveShell.colors

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

Options

'Neutral', 'NoColor', 'LightBG', 'Linux'

Default

'Neutral'

ZMQInteractiveShell.debug

No description

Trait type

Bool

Default

False

ZMQInteractiveShell.disable_failing_post_execute

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

Trait type

Bool

Default

False

ZMQInteractiveShell.display_page

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

Trait type

Bool

Default

False

ZMQInteractiveShell.enable_html_pager

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

Trait type

Bool

Default

False

ZMQInteractiveShell.history_length

Total length of command history

Trait type

Int

Default

10000

ZMQInteractiveShell.history_load_length

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

Trait type

Int

Default

1000

ZMQInteractiveShell.ipython_dir

No description

Trait type

Unicode

ZMQInteractiveShell.logappend

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

Trait type

Unicode

ZMQInteractiveShell.logfile

The name of the logfile to use.

Trait type

Unicode

ZMQInteractiveShell.logstart

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

Trait type

Bool

Default

False

ZMQInteractiveShell.loop_runner

Select the loop runner that will be used to execute top-level asynchronous code

Trait type

Any

Default

'IPython.core.interactiveshell._asyncio_runner'

ZMQInteractiveShell.object_info_string_level

No description

Options

0, 1, 2

Default

0

ZMQInteractiveShell.pdb

Automatically call the pdb debugger after every exception.

Trait type

Bool

Default

False

ZMQInteractiveShell.prompt_in1

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

Trait type

Unicode

Default

'In [\\#]: '

ZMQInteractiveShell.prompt_in2

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

Trait type

Unicode

Default

'   .\\D.: '

ZMQInteractiveShell.prompt_out

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

Trait type

Unicode

Default

'Out[\\#]: '

ZMQInteractiveShell.prompts_pad_left

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

Trait type

Bool

Default

True

ZMQInteractiveShell.quiet

No description

Trait type

Bool

Default

False

ZMQInteractiveShell.separate_in

No description

Trait type

SeparateUnicode

Default

'\\n'

ZMQInteractiveShell.separate_out

No description

Trait type

SeparateUnicode

ZMQInteractiveShell.separate_out2

No description

Trait type

SeparateUnicode

ZMQInteractiveShell.show_rewritten_input

Show rewritten input, e.g. for autocall.

Trait type

Bool

Default

True

ZMQInteractiveShell.sphinxify_docstring

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

Trait type

Bool

Default

False

ZMQInteractiveShell.wildcards_case_sensitive

No description

Trait type

Bool

Default

True

ZMQInteractiveShell.xmode

Switch modes for the IPython exception handlers.

Options

'Context', 'Plain', 'Verbose', 'Minimal'

Default

'Context'

ProfileDir.location

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

Trait type

Unicode

CLI option

--profile-dir

Session.buffer_threshold

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

Trait type

Int

Default

1024

Session.check_pid

Whether to check PID to protect against calls after fork.

This check can be disabled if fork-safety is handled elsewhere.

Trait type

Bool

Default

True

Session.copy_threshold

Threshold (in bytes) beyond which a buffer should be sent without copying.

Trait type

Int

Default

65536

Session.debug

Debug output in the Session

Trait type

Bool

Default

False

Session.digest_history_size

The maximum number of digests to remember.

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

Trait type

Int

Default

65536

Session.item_threshold

The maximum number of items for a container to be introspected for custom serialization. Containers larger than this are pickled outright.

Trait type

Int

Default

64

Session.key

execution key, for signing messages.

Trait type

CBytes

Default

b''

Session.keyfile

path to file containing execution key.

Trait type

Unicode

CLI option

--keyfile

Session.metadata

Metadata dictionary, which serves as the default top-level metadata dict for each message.

Trait type

Dict

Session.packer

The name of the packer for serializing messages. Should be one of ‘json’, ‘pickle’, or an import name for a custom callable serializer.

Trait type

DottedObjectName

Default

'json'

Session.session

The UUID identifying this session.

Trait type

CUnicode

CLI option

--ident

Session.signature_scheme

The digest scheme used to construct the message signatures. Must have the form ‘hmac-HASH’.

Trait type

Unicode

Default

'hmac-sha256'

Session.unpacker

The name of the unpacker for unserializing messages. Only used with custom functions for packer.

Trait type

DottedObjectName

Default

'json'

Session.username

Username for the Session. Default is your system username.

Trait type

Unicode

Default

'username'

CLI option

--user