Restoring authorship annotation for <shadchin@yandex-team.ru>. Commit 1 of 2.

1 files changed, 648 insertions, 648 deletions

diff --git a/contrib/python/ipython/py3/IPython/terminal/interactiveshell.py b/contrib/python/ipython/py3/IPython/terminal/interactiveshell.py
index 4e35aadd61..f3b697b993 100644
--- a/contrib/python/ipython/py3/IPython/terminal/interactiveshell.py
+++ b/contrib/python/ipython/py3/IPython/terminal/interactiveshell.py
@@ -1,648 +1,648 @@
-"""IPython terminal interface using prompt_toolkit"""
-
-import asyncio
-import os
-import sys
-import warnings
-from warnings import warn
-
-from IPython.core.interactiveshell import InteractiveShell, InteractiveShellABC
-from IPython.utils import io
-from IPython.utils.py3compat import input
-from IPython.utils.terminal import toggle_set_term_title, set_term_title, restore_term_title
-from IPython.utils.process import abbrev_cwd
-from traitlets import (
-    Bool, Unicode, Dict, Integer, observe, Instance, Type, default, Enum, Union,
-    Any, validate
-)
-
-from prompt_toolkit.enums import DEFAULT_BUFFER, EditingMode
-from prompt_toolkit.filters import (HasFocus, Condition, IsDone)
-from prompt_toolkit.formatted_text import PygmentsTokens
-from prompt_toolkit.history import InMemoryHistory
-from prompt_toolkit.layout.processors import ConditionalProcessor, HighlightMatchingBracketProcessor
-from prompt_toolkit.output import ColorDepth
-from prompt_toolkit.patch_stdout import patch_stdout
-from prompt_toolkit.shortcuts import PromptSession, CompleteStyle, print_formatted_text
-from prompt_toolkit.styles import DynamicStyle, merge_styles
-from prompt_toolkit.styles.pygments import style_from_pygments_cls, style_from_pygments_dict
-from prompt_toolkit import __version__ as ptk_version
-
-from pygments.styles import get_style_by_name
-from pygments.style import Style
-from pygments.token import Token
-
-from .debugger import TerminalPdb, Pdb
-from .magics import TerminalMagics
-from .pt_inputhooks import get_inputhook_name_and_func
-from .prompts import Prompts, ClassicPrompts, RichPromptDisplayHook
-from .ptutils import IPythonPTCompleter, IPythonPTLexer
-from .shortcuts import create_ipython_shortcuts
-
-DISPLAY_BANNER_DEPRECATED = object()
-PTK3 = ptk_version.startswith('3.')
-
-
-class _NoStyle(Style): pass
-
-
-
-_style_overrides_light_bg = {
-            Token.Prompt: '#0000ff',
-            Token.PromptNum: '#0000ee bold',
-            Token.OutPrompt: '#cc0000',
-            Token.OutPromptNum: '#bb0000 bold',
-}
-
-_style_overrides_linux = {
-            Token.Prompt: '#00cc00',
-            Token.PromptNum: '#00bb00 bold',
-            Token.OutPrompt: '#cc0000',
-            Token.OutPromptNum: '#bb0000 bold',
-}
-
-def get_default_editor():
-    try:
-        return os.environ['EDITOR']
-    except KeyError:
-        pass
-    except UnicodeError:
-        warn("$EDITOR environment variable is not pure ASCII. Using platform "
-             "default editor.")
-
-    if os.name == 'posix':
-        return 'vi'  # the only one guaranteed to be there!
-    else:
-        return 'notepad' # same in Windows!
-
-# conservatively check for tty
-# overridden streams can result in things like:
-# - sys.stdin = None
-# - no isatty method
-for _name in ('stdin', 'stdout', 'stderr'):
-    _stream = getattr(sys, _name)
-    if not _stream or not hasattr(_stream, 'isatty') or not _stream.isatty():
-        _is_tty = False
-        break
-else:
-    _is_tty = True
-
-
-_use_simple_prompt = ('IPY_TEST_SIMPLE_PROMPT' in os.environ) or (not _is_tty)
-
-def black_reformat_handler(text_before_cursor):
-    import black
-    formatted_text = black.format_str(text_before_cursor, mode=black.FileMode())
-    if not text_before_cursor.endswith('\n') and formatted_text.endswith('\n'):
-       formatted_text = formatted_text[:-1]
-    return formatted_text
-
-
-class TerminalInteractiveShell(InteractiveShell):
-    mime_renderers = Dict().tag(config=True)
-
-    space_for_menu = Integer(6, help='Number of line at the bottom of the screen '
-                                     'to reserve for the tab completion menu, '
-                                     'search history, ...etc, the height of '
-                                     'these menus will at most this value. '
-                                     'Increase it is you prefer long and skinny '
-                                     'menus, decrease for short and wide.'
-                            ).tag(config=True)
-
-    pt_app = None
-    debugger_history = None
-
-    simple_prompt = Bool(_use_simple_prompt,
-        help="""Use `raw_input` for the REPL, without completion and prompt colors.
-
-            Useful when controlling IPython as a subprocess, and piping STDIN/OUT/ERR. Known usage are:
-            IPython own testing machinery, and emacs inferior-shell integration through elpy.
-
-            This mode default to `True` if the `IPY_TEST_SIMPLE_PROMPT`
-            environment variable is set, or the current terminal is not a tty."""
-            ).tag(config=True)
-
-    @property
-    def debugger_cls(self):
-        return Pdb if self.simple_prompt else TerminalPdb
-
-    confirm_exit = Bool(True,
-        help="""
-        Set to confirm when you try to exit IPython with an EOF (Control-D
-        in Unix, Control-Z/Enter in Windows). By typing 'exit' or 'quit',
-        you can force a direct exit without any confirmation.""",
-    ).tag(config=True)
-
-    editing_mode = Unicode('emacs',
-        help="Shortcut style to use at the prompt. 'vi' or 'emacs'.",
-    ).tag(config=True)
-
-    autoformatter = Unicode(None,
-        help="Autoformatter to reformat Terminal code. Can be `'black'` or `None`",
-        allow_none=True
-    ).tag(config=True)
-
-    mouse_support = Bool(False,
-        help="Enable mouse support in the prompt\n(Note: prevents selecting text with the mouse)"
-    ).tag(config=True)
-
-    # We don't load the list of styles for the help string, because loading
-    # Pygments plugins takes time and can cause unexpected errors.
-    highlighting_style = Union([Unicode('legacy'), Type(klass=Style)],
-        help="""The name or class of a Pygments style to use for syntax
-        highlighting. To see available styles, run `pygmentize -L styles`."""
-    ).tag(config=True)
-
-    @validate('editing_mode')
-    def _validate_editing_mode(self, proposal):
-        if proposal['value'].lower() == 'vim':
-            proposal['value']= 'vi'
-        elif proposal['value'].lower() == 'default':
-            proposal['value']= 'emacs'
-
-        if hasattr(EditingMode, proposal['value'].upper()):
-            return proposal['value'].lower()
-
-        return self.editing_mode
-
-
-    @observe('editing_mode')
-    def _editing_mode(self, change):
-        if self.pt_app:
-            self.pt_app.editing_mode = getattr(EditingMode, change.new.upper())
-
-    @observe('autoformatter')
-    def _autoformatter_changed(self, change):
-        formatter = change.new
-        if formatter is None:
-            self.reformat_handler = lambda x:x
-        elif formatter == 'black':
-            self.reformat_handler = black_reformat_handler
-        else:
-            raise ValueError
-
-    @observe('highlighting_style')
-    @observe('colors')
-    def _highlighting_style_changed(self, change):
-        self.refresh_style()
-
-    def refresh_style(self):
-        self._style = self._make_style_from_name_or_cls(self.highlighting_style)
-
-
-    highlighting_style_overrides = Dict(
-        help="Override highlighting format for specific tokens"
-    ).tag(config=True)
-
-    true_color = Bool(False,
-        help=("Use 24bit colors instead of 256 colors in prompt highlighting. "
-              "If your terminal supports true color, the following command "
-              "should print 'TRUECOLOR' in orange: "
-              "printf \"\\x1b[38;2;255;100;0mTRUECOLOR\\x1b[0m\\n\"")
-    ).tag(config=True)
-
-    editor = Unicode(get_default_editor(),
-        help="Set the editor used by IPython (default to $EDITOR/vi/notepad)."
-    ).tag(config=True)
-
-    prompts_class = Type(Prompts, help='Class used to generate Prompt token for prompt_toolkit').tag(config=True)
-
-    prompts = Instance(Prompts)
-
-    @default('prompts')
-    def _prompts_default(self):
-        return self.prompts_class(self)
-
-#    @observe('prompts')
-#    def _(self, change):
-#        self._update_layout()
-
-    @default('displayhook_class')
-    def _displayhook_class_default(self):
-        return RichPromptDisplayHook
-
-    term_title = Bool(True,
-        help="Automatically set the terminal title"
-    ).tag(config=True)
-
-    term_title_format = Unicode("IPython: {cwd}",
-        help="Customize the terminal title format.  This is a python format string. " +
-             "Available substitutions are: {cwd}."
-    ).tag(config=True)
-
-    display_completions = Enum(('column', 'multicolumn','readlinelike'),
-        help= ( "Options for displaying tab completions, 'column', 'multicolumn', and "
-                "'readlinelike'. These options are for `prompt_toolkit`, see "
-                "`prompt_toolkit` documentation for more information."
-                ),
-        default_value='multicolumn').tag(config=True)
-
-    highlight_matching_brackets = Bool(True,
-        help="Highlight matching brackets.",
-    ).tag(config=True)
-
-    extra_open_editor_shortcuts = Bool(False,
-        help="Enable vi (v) or Emacs (C-X C-E) shortcuts to open an external editor. "
-             "This is in addition to the F2 binding, which is always enabled."
-    ).tag(config=True)
-
-    handle_return = Any(None,
-        help="Provide an alternative handler to be called when the user presses "
-             "Return. This is an advanced option intended for debugging, which "
-             "may be changed or removed in later releases."
-    ).tag(config=True)
-
-    enable_history_search = Bool(True,
-        help="Allows to enable/disable the prompt toolkit history search"
-    ).tag(config=True)
-
-    prompt_includes_vi_mode = Bool(True,
-        help="Display the current vi mode (when using vi editing mode)."
-    ).tag(config=True)
-
-    @observe('term_title')
-    def init_term_title(self, change=None):
-        # Enable or disable the terminal title.
-        if self.term_title:
-            toggle_set_term_title(True)
-            set_term_title(self.term_title_format.format(cwd=abbrev_cwd()))
-        else:
-            toggle_set_term_title(False)
-
-    def restore_term_title(self):
-        if self.term_title:
-            restore_term_title()
-
-    def init_display_formatter(self):
-        super(TerminalInteractiveShell, self).init_display_formatter()
-        # terminal only supports plain text
-        self.display_formatter.active_types = ['text/plain']
-        # disable `_ipython_display_`
-        self.display_formatter.ipython_display_formatter.enabled = False
-
-    def init_prompt_toolkit_cli(self):
-        if self.simple_prompt:
-            # Fall back to plain non-interactive output for tests.
-            # This is very limited.
-            def prompt():
-                prompt_text = "".join(x[1] for x in self.prompts.in_prompt_tokens())
-                lines = [input(prompt_text)]
-                prompt_continuation = "".join(x[1] for x in self.prompts.continuation_prompt_tokens())
-                while self.check_complete('\n'.join(lines))[0] == 'incomplete':
-                    lines.append( input(prompt_continuation) )
-                return '\n'.join(lines)
-            self.prompt_for_code = prompt
-            return
-
-        # Set up keyboard shortcuts
-        key_bindings = create_ipython_shortcuts(self)
-
-        # Pre-populate history from IPython's history database
-        history = InMemoryHistory()
-        last_cell = u""
-        for __, ___, cell in self.history_manager.get_tail(self.history_load_length,
-                                                        include_latest=True):
-            # Ignore blank lines and consecutive duplicates
-            cell = cell.rstrip()
-            if cell and (cell != last_cell):
-                history.append_string(cell)
-                last_cell = cell
-
-        self._style = self._make_style_from_name_or_cls(self.highlighting_style)
-        self.style = DynamicStyle(lambda: self._style)
-
-        editing_mode = getattr(EditingMode, self.editing_mode.upper())
-
-        self.pt_loop = asyncio.new_event_loop()
-        self.pt_app = PromptSession(
-                            editing_mode=editing_mode,
-                            key_bindings=key_bindings,
-                            history=history,
-                            completer=IPythonPTCompleter(shell=self),
-                            enable_history_search = self.enable_history_search,
-                            style=self.style,
-                            include_default_pygments_style=False,
-                            mouse_support=self.mouse_support,
-                            enable_open_in_editor=self.extra_open_editor_shortcuts,
-                            color_depth=self.color_depth,
-                            tempfile_suffix=".py",
-                            **self._extra_prompt_options())
-
-    def _make_style_from_name_or_cls(self, name_or_cls):
-        """
-        Small wrapper that make an IPython compatible style from a style name
-
-        We need that to add style for prompt ... etc.
-        """
-        style_overrides = {}
-        if name_or_cls == 'legacy':
-            legacy = self.colors.lower()
-            if legacy == 'linux':
-                style_cls = get_style_by_name('monokai')
-                style_overrides = _style_overrides_linux
-            elif legacy == 'lightbg':
-                style_overrides = _style_overrides_light_bg
-                style_cls = get_style_by_name('pastie')
-            elif legacy == 'neutral':
-                # The default theme needs to be visible on both a dark background
-                # and a light background, because we can't tell what the terminal
-                # looks like. These tweaks to the default theme help with that.
-                style_cls = get_style_by_name('default')
-                style_overrides.update({
-                    Token.Number: '#007700',
-                    Token.Operator: 'noinherit',
-                    Token.String: '#BB6622',
-                    Token.Name.Function: '#2080D0',
-                    Token.Name.Class: 'bold #2080D0',
-                    Token.Name.Namespace: 'bold #2080D0',
-                    Token.Name.Variable.Magic: '#ansiblue',
-                    Token.Prompt: '#009900',
-                    Token.PromptNum: '#ansibrightgreen bold',
-                    Token.OutPrompt: '#990000',
-                    Token.OutPromptNum: '#ansibrightred bold',
-                })
-
-                # Hack: Due to limited color support on the Windows console
-                # the prompt colors will be wrong without this
-                if os.name == 'nt':
-                    style_overrides.update({
-                        Token.Prompt: '#ansidarkgreen',
-                        Token.PromptNum: '#ansigreen bold',
-                        Token.OutPrompt: '#ansidarkred',
-                        Token.OutPromptNum: '#ansired bold',
-                    })
-            elif legacy =='nocolor':
-                style_cls=_NoStyle
-                style_overrides = {}
-            else :
-                raise ValueError('Got unknown colors: ', legacy)
-        else :
-            if isinstance(name_or_cls, str):
-                style_cls = get_style_by_name(name_or_cls)
-            else:
-                style_cls = name_or_cls
-            style_overrides = {
-                Token.Prompt: '#009900',
-                Token.PromptNum: '#ansibrightgreen bold',
-                Token.OutPrompt: '#990000',
-                Token.OutPromptNum: '#ansibrightred bold',
-            }
-        style_overrides.update(self.highlighting_style_overrides)
-        style = merge_styles([
-            style_from_pygments_cls(style_cls),
-            style_from_pygments_dict(style_overrides),
-        ])
-
-        return style
-
-    @property
-    def pt_complete_style(self):
-        return {
-            'multicolumn': CompleteStyle.MULTI_COLUMN,
-            'column': CompleteStyle.COLUMN,
-            'readlinelike': CompleteStyle.READLINE_LIKE,
-        }[self.display_completions]
-
-    @property
-    def color_depth(self):
-        return (ColorDepth.TRUE_COLOR if self.true_color else None)
-
-    def _extra_prompt_options(self):
-        """
-        Return the current layout option for the current Terminal InteractiveShell
-        """
-        def get_message():
-            return PygmentsTokens(self.prompts.in_prompt_tokens())
-
-        if self.editing_mode == 'emacs':
-            # with emacs mode the prompt is (usually) static, so we call only
-            # the function once. With VI mode it can toggle between [ins] and
-            # [nor] so we can't precompute.
-            # here I'm going to favor the default keybinding which almost
-            # everybody uses to decrease CPU usage.
-            # if we have issues with users with custom Prompts we can see how to
-            # work around this.
-            get_message = get_message()
-
-        options = {
-                'complete_in_thread': False,
-                'lexer':IPythonPTLexer(),
-                'reserve_space_for_menu':self.space_for_menu,
-                'message': get_message,
-                'prompt_continuation': (
-                    lambda width, lineno, is_soft_wrap:
-                        PygmentsTokens(self.prompts.continuation_prompt_tokens(width))),
-                'multiline': True,
-                'complete_style': self.pt_complete_style,
-
-                # Highlight matching brackets, but only when this setting is
-                # enabled, and only when the DEFAULT_BUFFER has the focus.
-                'input_processors': [ConditionalProcessor(
-                        processor=HighlightMatchingBracketProcessor(chars='[](){}'),
-                        filter=HasFocus(DEFAULT_BUFFER) & ~IsDone() &
-                            Condition(lambda: self.highlight_matching_brackets))],
-                }
-        if not PTK3:
-            options['inputhook'] = self.inputhook
-
-        return options
-
-    def prompt_for_code(self):
-        if self.rl_next_input:
-            default = self.rl_next_input
-            self.rl_next_input = None
-        else:
-            default = ''
-
-        # In order to make sure that asyncio code written in the
-        # interactive shell doesn't interfere with the prompt, we run the
-        # prompt in a different event loop.
-        # If we don't do this, people could spawn coroutine with a
-        # while/true inside which will freeze the prompt.
-
-        policy = asyncio.get_event_loop_policy()
-        try:
-            old_loop = policy.get_event_loop()
-        except RuntimeError:
-            # This happens when the the event loop is closed,
-            # e.g. by calling `asyncio.run()`.
-            old_loop = None
-
-        policy.set_event_loop(self.pt_loop)
-        try:
-            with patch_stdout(raw=True):
-                text = self.pt_app.prompt(
-                    default=default,
-                    **self._extra_prompt_options())
-        finally:
-            # Restore the original event loop.
-            if old_loop is not None:
-                policy.set_event_loop(old_loop)
-
-        return text
-
-    def enable_win_unicode_console(self):
-        # Since IPython 7.10 doesn't support python < 3.6 and PEP 528, Python uses the unicode APIs for the Windows
-        # console by default, so WUC shouldn't be needed.
-        from warnings import warn
-        warn("`enable_win_unicode_console` is deprecated since IPython 7.10, does not do anything and will be removed in the future",
-             DeprecationWarning,
-             stacklevel=2)
-
-    def init_io(self):
-        if sys.platform not in {'win32', 'cli'}:
-            return
-
-        import colorama
-        colorama.init()
-
-        # For some reason we make these wrappers around stdout/stderr.
-        # For now, we need to reset them so all output gets coloured.
-        # https://github.com/ipython/ipython/issues/8669
-        # io.std* are deprecated, but don't show our own deprecation warnings
-        # during initialization of the deprecated API.
-        with warnings.catch_warnings():
-            warnings.simplefilter('ignore', DeprecationWarning)
-            io.stdout = io.IOStream(sys.stdout)
-            io.stderr = io.IOStream(sys.stderr)
-
-    def init_magics(self):
-        super(TerminalInteractiveShell, self).init_magics()
-        self.register_magics(TerminalMagics)
-
-    def init_alias(self):
-        # The parent class defines aliases that can be safely used with any
-        # frontend.
-        super(TerminalInteractiveShell, self).init_alias()
-
-        # Now define aliases that only make sense on the terminal, because they
-        # need direct access to the console in a way that we can't emulate in
-        # GUI or web frontend
-        if os.name == 'posix':
-            for cmd in ('clear', 'more', 'less', 'man'):
-                self.alias_manager.soft_define_alias(cmd, cmd)
-
-
-    def __init__(self, *args, **kwargs):
-        super(TerminalInteractiveShell, self).__init__(*args, **kwargs)
-        self.init_prompt_toolkit_cli()
-        self.init_term_title()
-        self.keep_running = True
-
-        self.debugger_history = InMemoryHistory()
-
-    def ask_exit(self):
-        self.keep_running = False
-
-    rl_next_input = None
-
-    def interact(self, display_banner=DISPLAY_BANNER_DEPRECATED):
-
-        if display_banner is not DISPLAY_BANNER_DEPRECATED:
-            warn('interact `display_banner` argument is deprecated since IPython 5.0. Call `show_banner()` if needed.', DeprecationWarning, stacklevel=2)
-
-        self.keep_running = True
-        while self.keep_running:
-            print(self.separate_in, end='')
-
-            try:
-                code = self.prompt_for_code()
-            except EOFError:
-                if (not self.confirm_exit) \
-                        or self.ask_yes_no('Do you really want to exit ([y]/n)?','y','n'):
-                    self.ask_exit()
-
-            else:
-                if code:
-                    self.run_cell(code, store_history=True)
-
-    def mainloop(self, display_banner=DISPLAY_BANNER_DEPRECATED):
-        # An extra layer of protection in case someone mashing Ctrl-C breaks
-        # out of our internal code.
-        if display_banner is not DISPLAY_BANNER_DEPRECATED:
-            warn('mainloop `display_banner` argument is deprecated since IPython 5.0. Call `show_banner()` if needed.', DeprecationWarning, stacklevel=2)
-        while True:
-            try:
-                self.interact()
-                break
-            except KeyboardInterrupt as e:
-                print("\n%s escaped interact()\n" % type(e).__name__)
-            finally:
-                # An interrupt during the eventloop will mess up the
-                # internal state of the prompt_toolkit library.
-                # Stopping the eventloop fixes this, see
-                # https://github.com/ipython/ipython/pull/9867
-                if hasattr(self, '_eventloop'):
-                    self._eventloop.stop()
-
-                self.restore_term_title()
-
-
-    _inputhook = None
-    def inputhook(self, context):
-        if self._inputhook is not None:
-            self._inputhook(context)
-
-    active_eventloop = None
-    def enable_gui(self, gui=None):
-        if gui and (gui != 'inline') :
-            self.active_eventloop, self._inputhook =\
-                get_inputhook_name_and_func(gui)
-        else:
-            self.active_eventloop = self._inputhook = None
-
-        # For prompt_toolkit 3.0. We have to create an asyncio event loop with
-        # this inputhook.
-        if PTK3:
-            import asyncio
-            from prompt_toolkit.eventloop import new_eventloop_with_inputhook
-
-            if gui == 'asyncio':
-                # When we integrate the asyncio event loop, run the UI in the
-                # same event loop as the rest of the code. don't use an actual
-                # input hook. (Asyncio is not made for nesting event loops.)
-                self.pt_loop = asyncio.get_event_loop()
-
-            elif self._inputhook:
-                # If an inputhook was set, create a new asyncio event loop with
-                # this inputhook for the prompt.
-                self.pt_loop = new_eventloop_with_inputhook(self._inputhook)
-            else:
-                # When there's no inputhook, run the prompt in a separate
-                # asyncio event loop.
-                self.pt_loop = asyncio.new_event_loop()
-
-    # Run !system commands directly, not through pipes, so terminal programs
-    # work correctly.
-    system = InteractiveShell.system_raw
-
-    def auto_rewrite_input(self, cmd):
-        """Overridden from the parent class to use fancy rewriting prompt"""
-        if not self.show_rewritten_input:
-            return
-
-        tokens = self.prompts.rewrite_prompt_tokens()
-        if self.pt_app:
-            print_formatted_text(PygmentsTokens(tokens), end='',
-                                 style=self.pt_app.app.style)
-            print(cmd)
-        else:
-            prompt = ''.join(s for t, s in tokens)
-            print(prompt, cmd, sep='')
-
-    _prompts_before = None
-    def switch_doctest_mode(self, mode):
-        """Switch prompts to classic for %doctest_mode"""
-        if mode:
-            self._prompts_before = self.prompts
-            self.prompts = ClassicPrompts(self)
-        elif self._prompts_before:
-            self.prompts = self._prompts_before
-            self._prompts_before = None
-#        self._update_layout()
-
-
-InteractiveShellABC.register(TerminalInteractiveShell)
-
-if __name__ == '__main__':
-    TerminalInteractiveShell.instance().interact()
+"""IPython terminal interface using prompt_toolkit""" 
+ 
+import asyncio 
+import os 
+import sys 
+import warnings 
+from warnings import warn 
+ 
+from IPython.core.interactiveshell import InteractiveShell, InteractiveShellABC 
+from IPython.utils import io 
+from IPython.utils.py3compat import input 
+from IPython.utils.terminal import toggle_set_term_title, set_term_title, restore_term_title 
+from IPython.utils.process import abbrev_cwd 
+from traitlets import ( 
+    Bool, Unicode, Dict, Integer, observe, Instance, Type, default, Enum, Union, 
+    Any, validate 
+) 
+ 
+from prompt_toolkit.enums import DEFAULT_BUFFER, EditingMode 
+from prompt_toolkit.filters import (HasFocus, Condition, IsDone) 
+from prompt_toolkit.formatted_text import PygmentsTokens 
+from prompt_toolkit.history import InMemoryHistory 
+from prompt_toolkit.layout.processors import ConditionalProcessor, HighlightMatchingBracketProcessor 
+from prompt_toolkit.output import ColorDepth 
+from prompt_toolkit.patch_stdout import patch_stdout 
+from prompt_toolkit.shortcuts import PromptSession, CompleteStyle, print_formatted_text 
+from prompt_toolkit.styles import DynamicStyle, merge_styles 
+from prompt_toolkit.styles.pygments import style_from_pygments_cls, style_from_pygments_dict 
+from prompt_toolkit import __version__ as ptk_version 
+ 
+from pygments.styles import get_style_by_name 
+from pygments.style import Style 
+from pygments.token import Token 
+ 
+from .debugger import TerminalPdb, Pdb 
+from .magics import TerminalMagics 
+from .pt_inputhooks import get_inputhook_name_and_func 
+from .prompts import Prompts, ClassicPrompts, RichPromptDisplayHook 
+from .ptutils import IPythonPTCompleter, IPythonPTLexer 
+from .shortcuts import create_ipython_shortcuts 
+ 
+DISPLAY_BANNER_DEPRECATED = object() 
+PTK3 = ptk_version.startswith('3.') 
+ 
+ 
+class _NoStyle(Style): pass 
+ 
+ 
+ 
+_style_overrides_light_bg = { 
+            Token.Prompt: '#0000ff', 
+            Token.PromptNum: '#0000ee bold', 
+            Token.OutPrompt: '#cc0000', 
+            Token.OutPromptNum: '#bb0000 bold', 
+} 
+ 
+_style_overrides_linux = { 
+            Token.Prompt: '#00cc00', 
+            Token.PromptNum: '#00bb00 bold', 
+            Token.OutPrompt: '#cc0000', 
+            Token.OutPromptNum: '#bb0000 bold', 
+} 
+ 
+def get_default_editor(): 
+    try: 
+        return os.environ['EDITOR'] 
+    except KeyError: 
+        pass 
+    except UnicodeError: 
+        warn("$EDITOR environment variable is not pure ASCII. Using platform " 
+             "default editor.") 
+ 
+    if os.name == 'posix': 
+        return 'vi'  # the only one guaranteed to be there! 
+    else: 
+        return 'notepad' # same in Windows! 
+ 
+# conservatively check for tty 
+# overridden streams can result in things like: 
+# - sys.stdin = None 
+# - no isatty method 
+for _name in ('stdin', 'stdout', 'stderr'): 
+    _stream = getattr(sys, _name) 
+    if not _stream or not hasattr(_stream, 'isatty') or not _stream.isatty(): 
+        _is_tty = False 
+        break 
+else: 
+    _is_tty = True 
+ 
+ 
+_use_simple_prompt = ('IPY_TEST_SIMPLE_PROMPT' in os.environ) or (not _is_tty) 
+ 
+def black_reformat_handler(text_before_cursor): 
+    import black 
+    formatted_text = black.format_str(text_before_cursor, mode=black.FileMode()) 
+    if not text_before_cursor.endswith('\n') and formatted_text.endswith('\n'): 
+       formatted_text = formatted_text[:-1] 
+    return formatted_text 
+ 
+ 
+class TerminalInteractiveShell(InteractiveShell): 
+    mime_renderers = Dict().tag(config=True) 
+ 
+    space_for_menu = Integer(6, help='Number of line at the bottom of the screen ' 
+                                     'to reserve for the tab completion menu, ' 
+                                     'search history, ...etc, the height of ' 
+                                     'these menus will at most this value. ' 
+                                     'Increase it is you prefer long and skinny ' 
+                                     'menus, decrease for short and wide.' 
+                            ).tag(config=True) 
+ 
+    pt_app = None 
+    debugger_history = None 
+ 
+    simple_prompt = Bool(_use_simple_prompt, 
+        help="""Use `raw_input` for the REPL, without completion and prompt colors. 
+ 
+            Useful when controlling IPython as a subprocess, and piping STDIN/OUT/ERR. Known usage are: 
+            IPython own testing machinery, and emacs inferior-shell integration through elpy. 
+ 
+            This mode default to `True` if the `IPY_TEST_SIMPLE_PROMPT` 
+            environment variable is set, or the current terminal is not a tty.""" 
+            ).tag(config=True) 
+ 
+    @property 
+    def debugger_cls(self): 
+        return Pdb if self.simple_prompt else TerminalPdb 
+ 
+    confirm_exit = Bool(True, 
+        help=""" 
+        Set to confirm when you try to exit IPython with an EOF (Control-D 
+        in Unix, Control-Z/Enter in Windows). By typing 'exit' or 'quit', 
+        you can force a direct exit without any confirmation.""", 
+    ).tag(config=True) 
+ 
+    editing_mode = Unicode('emacs', 
+        help="Shortcut style to use at the prompt. 'vi' or 'emacs'.", 
+    ).tag(config=True) 
+ 
+    autoformatter = Unicode(None, 
+        help="Autoformatter to reformat Terminal code. Can be `'black'` or `None`", 
+        allow_none=True 
+    ).tag(config=True) 
+ 
+    mouse_support = Bool(False, 
+        help="Enable mouse support in the prompt\n(Note: prevents selecting text with the mouse)" 
+    ).tag(config=True) 
+ 
+    # We don't load the list of styles for the help string, because loading 
+    # Pygments plugins takes time and can cause unexpected errors. 
+    highlighting_style = Union([Unicode('legacy'), Type(klass=Style)], 
+        help="""The name or class of a Pygments style to use for syntax 
+        highlighting. To see available styles, run `pygmentize -L styles`.""" 
+    ).tag(config=True) 
+ 
+    @validate('editing_mode') 
+    def _validate_editing_mode(self, proposal): 
+        if proposal['value'].lower() == 'vim': 
+            proposal['value']= 'vi' 
+        elif proposal['value'].lower() == 'default': 
+            proposal['value']= 'emacs' 
+ 
+        if hasattr(EditingMode, proposal['value'].upper()): 
+            return proposal['value'].lower() 
+ 
+        return self.editing_mode 
+ 
+ 
+    @observe('editing_mode') 
+    def _editing_mode(self, change): 
+        if self.pt_app: 
+            self.pt_app.editing_mode = getattr(EditingMode, change.new.upper()) 
+ 
+    @observe('autoformatter') 
+    def _autoformatter_changed(self, change): 
+        formatter = change.new 
+        if formatter is None: 
+            self.reformat_handler = lambda x:x 
+        elif formatter == 'black': 
+            self.reformat_handler = black_reformat_handler 
+        else: 
+            raise ValueError 
+ 
+    @observe('highlighting_style') 
+    @observe('colors') 
+    def _highlighting_style_changed(self, change): 
+        self.refresh_style() 
+ 
+    def refresh_style(self): 
+        self._style = self._make_style_from_name_or_cls(self.highlighting_style) 
+ 
+ 
+    highlighting_style_overrides = Dict( 
+        help="Override highlighting format for specific tokens" 
+    ).tag(config=True) 
+ 
+    true_color = Bool(False, 
+        help=("Use 24bit colors instead of 256 colors in prompt highlighting. " 
+              "If your terminal supports true color, the following command " 
+              "should print 'TRUECOLOR' in orange: " 
+              "printf \"\\x1b[38;2;255;100;0mTRUECOLOR\\x1b[0m\\n\"") 
+    ).tag(config=True) 
+ 
+    editor = Unicode(get_default_editor(), 
+        help="Set the editor used by IPython (default to $EDITOR/vi/notepad)." 
+    ).tag(config=True) 
+ 
+    prompts_class = Type(Prompts, help='Class used to generate Prompt token for prompt_toolkit').tag(config=True) 
+ 
+    prompts = Instance(Prompts) 
+ 
+    @default('prompts') 
+    def _prompts_default(self): 
+        return self.prompts_class(self) 
+ 
+#    @observe('prompts') 
+#    def _(self, change): 
+#        self._update_layout() 
+ 
+    @default('displayhook_class') 
+    def _displayhook_class_default(self): 
+        return RichPromptDisplayHook 
+ 
+    term_title = Bool(True, 
+        help="Automatically set the terminal title" 
+    ).tag(config=True) 
+ 
+    term_title_format = Unicode("IPython: {cwd}", 
+        help="Customize the terminal title format.  This is a python format string. " + 
+             "Available substitutions are: {cwd}." 
+    ).tag(config=True) 
+ 
+    display_completions = Enum(('column', 'multicolumn','readlinelike'), 
+        help= ( "Options for displaying tab completions, 'column', 'multicolumn', and " 
+                "'readlinelike'. These options are for `prompt_toolkit`, see " 
+                "`prompt_toolkit` documentation for more information." 
+                ), 
+        default_value='multicolumn').tag(config=True) 
+ 
+    highlight_matching_brackets = Bool(True, 
+        help="Highlight matching brackets.", 
+    ).tag(config=True) 
+ 
+    extra_open_editor_shortcuts = Bool(False, 
+        help="Enable vi (v) or Emacs (C-X C-E) shortcuts to open an external editor. " 
+             "This is in addition to the F2 binding, which is always enabled." 
+    ).tag(config=True) 
+ 
+    handle_return = Any(None, 
+        help="Provide an alternative handler to be called when the user presses " 
+             "Return. This is an advanced option intended for debugging, which " 
+             "may be changed or removed in later releases." 
+    ).tag(config=True) 
+ 
+    enable_history_search = Bool(True, 
+        help="Allows to enable/disable the prompt toolkit history search" 
+    ).tag(config=True) 
+ 
+    prompt_includes_vi_mode = Bool(True, 
+        help="Display the current vi mode (when using vi editing mode)." 
+    ).tag(config=True) 
+ 
+    @observe('term_title') 
+    def init_term_title(self, change=None): 
+        # Enable or disable the terminal title. 
+        if self.term_title: 
+            toggle_set_term_title(True) 
+            set_term_title(self.term_title_format.format(cwd=abbrev_cwd())) 
+        else: 
+            toggle_set_term_title(False) 
+ 
+    def restore_term_title(self): 
+        if self.term_title: 
+            restore_term_title() 
+ 
+    def init_display_formatter(self): 
+        super(TerminalInteractiveShell, self).init_display_formatter() 
+        # terminal only supports plain text 
+        self.display_formatter.active_types = ['text/plain'] 
+        # disable `_ipython_display_` 
+        self.display_formatter.ipython_display_formatter.enabled = False 
+ 
+    def init_prompt_toolkit_cli(self): 
+        if self.simple_prompt: 
+            # Fall back to plain non-interactive output for tests. 
+            # This is very limited. 
+            def prompt(): 
+                prompt_text = "".join(x[1] for x in self.prompts.in_prompt_tokens()) 
+                lines = [input(prompt_text)] 
+                prompt_continuation = "".join(x[1] for x in self.prompts.continuation_prompt_tokens()) 
+                while self.check_complete('\n'.join(lines))[0] == 'incomplete': 
+                    lines.append( input(prompt_continuation) ) 
+                return '\n'.join(lines) 
+            self.prompt_for_code = prompt 
+            return 
+ 
+        # Set up keyboard shortcuts 
+        key_bindings = create_ipython_shortcuts(self) 
+ 
+        # Pre-populate history from IPython's history database 
+        history = InMemoryHistory() 
+        last_cell = u"" 
+        for __, ___, cell in self.history_manager.get_tail(self.history_load_length, 
+                                                        include_latest=True): 
+            # Ignore blank lines and consecutive duplicates 
+            cell = cell.rstrip() 
+            if cell and (cell != last_cell): 
+                history.append_string(cell) 
+                last_cell = cell 
+ 
+        self._style = self._make_style_from_name_or_cls(self.highlighting_style) 
+        self.style = DynamicStyle(lambda: self._style) 
+ 
+        editing_mode = getattr(EditingMode, self.editing_mode.upper()) 
+ 
+        self.pt_loop = asyncio.new_event_loop() 
+        self.pt_app = PromptSession( 
+                            editing_mode=editing_mode, 
+                            key_bindings=key_bindings, 
+                            history=history, 
+                            completer=IPythonPTCompleter(shell=self), 
+                            enable_history_search = self.enable_history_search, 
+                            style=self.style, 
+                            include_default_pygments_style=False, 
+                            mouse_support=self.mouse_support, 
+                            enable_open_in_editor=self.extra_open_editor_shortcuts, 
+                            color_depth=self.color_depth, 
+                            tempfile_suffix=".py", 
+                            **self._extra_prompt_options()) 
+ 
+    def _make_style_from_name_or_cls(self, name_or_cls): 
+        """ 
+        Small wrapper that make an IPython compatible style from a style name 
+ 
+        We need that to add style for prompt ... etc. 
+        """ 
+        style_overrides = {} 
+        if name_or_cls == 'legacy': 
+            legacy = self.colors.lower() 
+            if legacy == 'linux': 
+                style_cls = get_style_by_name('monokai') 
+                style_overrides = _style_overrides_linux 
+            elif legacy == 'lightbg': 
+                style_overrides = _style_overrides_light_bg 
+                style_cls = get_style_by_name('pastie') 
+            elif legacy == 'neutral': 
+                # The default theme needs to be visible on both a dark background 
+                # and a light background, because we can't tell what the terminal 
+                # looks like. These tweaks to the default theme help with that. 
+                style_cls = get_style_by_name('default') 
+                style_overrides.update({ 
+                    Token.Number: '#007700', 
+                    Token.Operator: 'noinherit', 
+                    Token.String: '#BB6622', 
+                    Token.Name.Function: '#2080D0', 
+                    Token.Name.Class: 'bold #2080D0', 
+                    Token.Name.Namespace: 'bold #2080D0', 
+                    Token.Name.Variable.Magic: '#ansiblue', 
+                    Token.Prompt: '#009900', 
+                    Token.PromptNum: '#ansibrightgreen bold', 
+                    Token.OutPrompt: '#990000', 
+                    Token.OutPromptNum: '#ansibrightred bold', 
+                }) 
+ 
+                # Hack: Due to limited color support on the Windows console 
+                # the prompt colors will be wrong without this 
+                if os.name == 'nt': 
+                    style_overrides.update({ 
+                        Token.Prompt: '#ansidarkgreen', 
+                        Token.PromptNum: '#ansigreen bold', 
+                        Token.OutPrompt: '#ansidarkred', 
+                        Token.OutPromptNum: '#ansired bold', 
+                    }) 
+            elif legacy =='nocolor': 
+                style_cls=_NoStyle 
+                style_overrides = {} 
+            else : 
+                raise ValueError('Got unknown colors: ', legacy) 
+        else : 
+            if isinstance(name_or_cls, str): 
+                style_cls = get_style_by_name(name_or_cls) 
+            else: 
+                style_cls = name_or_cls 
+            style_overrides = { 
+                Token.Prompt: '#009900', 
+                Token.PromptNum: '#ansibrightgreen bold', 
+                Token.OutPrompt: '#990000', 
+                Token.OutPromptNum: '#ansibrightred bold', 
+            } 
+        style_overrides.update(self.highlighting_style_overrides) 
+        style = merge_styles([ 
+            style_from_pygments_cls(style_cls), 
+            style_from_pygments_dict(style_overrides), 
+        ]) 
+ 
+        return style 
+ 
+    @property 
+    def pt_complete_style(self): 
+        return { 
+            'multicolumn': CompleteStyle.MULTI_COLUMN, 
+            'column': CompleteStyle.COLUMN, 
+            'readlinelike': CompleteStyle.READLINE_LIKE, 
+        }[self.display_completions] 
+ 
+    @property 
+    def color_depth(self): 
+        return (ColorDepth.TRUE_COLOR if self.true_color else None) 
+ 
+    def _extra_prompt_options(self): 
+        """ 
+        Return the current layout option for the current Terminal InteractiveShell 
+        """ 
+        def get_message(): 
+            return PygmentsTokens(self.prompts.in_prompt_tokens()) 
+ 
+        if self.editing_mode == 'emacs': 
+            # with emacs mode the prompt is (usually) static, so we call only 
+            # the function once. With VI mode it can toggle between [ins] and 
+            # [nor] so we can't precompute. 
+            # here I'm going to favor the default keybinding which almost 
+            # everybody uses to decrease CPU usage. 
+            # if we have issues with users with custom Prompts we can see how to 
+            # work around this. 
+            get_message = get_message() 
+ 
+        options = { 
+                'complete_in_thread': False, 
+                'lexer':IPythonPTLexer(), 
+                'reserve_space_for_menu':self.space_for_menu, 
+                'message': get_message, 
+                'prompt_continuation': ( 
+                    lambda width, lineno, is_soft_wrap: 
+                        PygmentsTokens(self.prompts.continuation_prompt_tokens(width))), 
+                'multiline': True, 
+                'complete_style': self.pt_complete_style, 
+ 
+                # Highlight matching brackets, but only when this setting is 
+                # enabled, and only when the DEFAULT_BUFFER has the focus. 
+                'input_processors': [ConditionalProcessor( 
+                        processor=HighlightMatchingBracketProcessor(chars='[](){}'), 
+                        filter=HasFocus(DEFAULT_BUFFER) & ~IsDone() & 
+                            Condition(lambda: self.highlight_matching_brackets))], 
+                } 
+        if not PTK3: 
+            options['inputhook'] = self.inputhook 
+ 
+        return options 
+ 
+    def prompt_for_code(self): 
+        if self.rl_next_input: 
+            default = self.rl_next_input 
+            self.rl_next_input = None 
+        else: 
+            default = '' 
+ 
+        # In order to make sure that asyncio code written in the 
+        # interactive shell doesn't interfere with the prompt, we run the 
+        # prompt in a different event loop. 
+        # If we don't do this, people could spawn coroutine with a 
+        # while/true inside which will freeze the prompt. 
+ 
+        policy = asyncio.get_event_loop_policy() 
+        try: 
+            old_loop = policy.get_event_loop() 
+        except RuntimeError: 
+            # This happens when the the event loop is closed, 
+            # e.g. by calling `asyncio.run()`. 
+            old_loop = None 
+ 
+        policy.set_event_loop(self.pt_loop) 
+        try: 
+            with patch_stdout(raw=True): 
+                text = self.pt_app.prompt( 
+                    default=default, 
+                    **self._extra_prompt_options()) 
+        finally: 
+            # Restore the original event loop. 
+            if old_loop is not None: 
+                policy.set_event_loop(old_loop) 
+ 
+        return text 
+ 
+    def enable_win_unicode_console(self): 
+        # Since IPython 7.10 doesn't support python < 3.6 and PEP 528, Python uses the unicode APIs for the Windows 
+        # console by default, so WUC shouldn't be needed. 
+        from warnings import warn 
+        warn("`enable_win_unicode_console` is deprecated since IPython 7.10, does not do anything and will be removed in the future", 
+             DeprecationWarning, 
+             stacklevel=2) 
+ 
+    def init_io(self): 
+        if sys.platform not in {'win32', 'cli'}: 
+            return 
+ 
+        import colorama 
+        colorama.init() 
+ 
+        # For some reason we make these wrappers around stdout/stderr. 
+        # For now, we need to reset them so all output gets coloured. 
+        # https://github.com/ipython/ipython/issues/8669 
+        # io.std* are deprecated, but don't show our own deprecation warnings 
+        # during initialization of the deprecated API. 
+        with warnings.catch_warnings(): 
+            warnings.simplefilter('ignore', DeprecationWarning) 
+            io.stdout = io.IOStream(sys.stdout) 
+            io.stderr = io.IOStream(sys.stderr) 
+ 
+    def init_magics(self): 
+        super(TerminalInteractiveShell, self).init_magics() 
+        self.register_magics(TerminalMagics) 
+ 
+    def init_alias(self): 
+        # The parent class defines aliases that can be safely used with any 
+        # frontend. 
+        super(TerminalInteractiveShell, self).init_alias() 
+ 
+        # Now define aliases that only make sense on the terminal, because they 
+        # need direct access to the console in a way that we can't emulate in 
+        # GUI or web frontend 
+        if os.name == 'posix': 
+            for cmd in ('clear', 'more', 'less', 'man'): 
+                self.alias_manager.soft_define_alias(cmd, cmd) 
+ 
+ 
+    def __init__(self, *args, **kwargs): 
+        super(TerminalInteractiveShell, self).__init__(*args, **kwargs) 
+        self.init_prompt_toolkit_cli() 
+        self.init_term_title() 
+        self.keep_running = True 
+ 
+        self.debugger_history = InMemoryHistory() 
+ 
+    def ask_exit(self): 
+        self.keep_running = False 
+ 
+    rl_next_input = None 
+ 
+    def interact(self, display_banner=DISPLAY_BANNER_DEPRECATED): 
+ 
+        if display_banner is not DISPLAY_BANNER_DEPRECATED: 
+            warn('interact `display_banner` argument is deprecated since IPython 5.0. Call `show_banner()` if needed.', DeprecationWarning, stacklevel=2) 
+ 
+        self.keep_running = True 
+        while self.keep_running: 
+            print(self.separate_in, end='') 
+ 
+            try: 
+                code = self.prompt_for_code() 
+            except EOFError: 
+                if (not self.confirm_exit) \ 
+                        or self.ask_yes_no('Do you really want to exit ([y]/n)?','y','n'): 
+                    self.ask_exit() 
+ 
+            else: 
+                if code: 
+                    self.run_cell(code, store_history=True) 
+ 
+    def mainloop(self, display_banner=DISPLAY_BANNER_DEPRECATED): 
+        # An extra layer of protection in case someone mashing Ctrl-C breaks 
+        # out of our internal code. 
+        if display_banner is not DISPLAY_BANNER_DEPRECATED: 
+            warn('mainloop `display_banner` argument is deprecated since IPython 5.0. Call `show_banner()` if needed.', DeprecationWarning, stacklevel=2) 
+        while True: 
+            try: 
+                self.interact() 
+                break 
+            except KeyboardInterrupt as e: 
+                print("\n%s escaped interact()\n" % type(e).__name__) 
+            finally: 
+                # An interrupt during the eventloop will mess up the 
+                # internal state of the prompt_toolkit library. 
+                # Stopping the eventloop fixes this, see 
+                # https://github.com/ipython/ipython/pull/9867 
+                if hasattr(self, '_eventloop'): 
+                    self._eventloop.stop() 
+ 
+                self.restore_term_title() 
+ 
+ 
+    _inputhook = None 
+    def inputhook(self, context): 
+        if self._inputhook is not None: 
+            self._inputhook(context) 
+ 
+    active_eventloop = None 
+    def enable_gui(self, gui=None): 
+        if gui and (gui != 'inline') : 
+            self.active_eventloop, self._inputhook =\ 
+                get_inputhook_name_and_func(gui) 
+        else: 
+            self.active_eventloop = self._inputhook = None 
+ 
+        # For prompt_toolkit 3.0. We have to create an asyncio event loop with 
+        # this inputhook. 
+        if PTK3: 
+            import asyncio 
+            from prompt_toolkit.eventloop import new_eventloop_with_inputhook 
+ 
+            if gui == 'asyncio': 
+                # When we integrate the asyncio event loop, run the UI in the 
+                # same event loop as the rest of the code. don't use an actual 
+                # input hook. (Asyncio is not made for nesting event loops.) 
+                self.pt_loop = asyncio.get_event_loop() 
+ 
+            elif self._inputhook: 
+                # If an inputhook was set, create a new asyncio event loop with 
+                # this inputhook for the prompt. 
+                self.pt_loop = new_eventloop_with_inputhook(self._inputhook) 
+            else: 
+                # When there's no inputhook, run the prompt in a separate 
+                # asyncio event loop. 
+                self.pt_loop = asyncio.new_event_loop() 
+ 
+    # Run !system commands directly, not through pipes, so terminal programs 
+    # work correctly. 
+    system = InteractiveShell.system_raw 
+ 
+    def auto_rewrite_input(self, cmd): 
+        """Overridden from the parent class to use fancy rewriting prompt""" 
+        if not self.show_rewritten_input: 
+            return 
+ 
+        tokens = self.prompts.rewrite_prompt_tokens() 
+        if self.pt_app: 
+            print_formatted_text(PygmentsTokens(tokens), end='', 
+                                 style=self.pt_app.app.style) 
+            print(cmd) 
+        else: 
+            prompt = ''.join(s for t, s in tokens) 
+            print(prompt, cmd, sep='') 
+ 
+    _prompts_before = None 
+    def switch_doctest_mode(self, mode): 
+        """Switch prompts to classic for %doctest_mode""" 
+        if mode: 
+            self._prompts_before = self.prompts 
+            self.prompts = ClassicPrompts(self) 
+        elif self._prompts_before: 
+            self.prompts = self._prompts_before 
+            self._prompts_before = None 
+#        self._update_layout() 
+ 
+ 
+InteractiveShellABC.register(TerminalInteractiveShell) 
+ 
+if __name__ == '__main__': 
+    TerminalInteractiveShell.instance().interact()