Class PyShell

Lib/idlelib/pyshell.py:839–1450

class PyShell(OutputWindow):
    from idlelib.squeezer import Squeezer

    shell_title = "IDLE Shell"

    # Override classes
    ColorDelegator = ModifiedColorDelegator
    UndoDelegator = ModifiedUndoDelegator

    # Override menus
    menu_specs = [
        ("file", "_File"),
        ("edit", "_Edit"),
        ("debug", "_Debug"),
        ("options", "_Options"),
        ("window", "_Window"),
        ("help", "_Help"),
    ]

    # Extend right-click context menu
    rmenu_specs = OutputWindow.rmenu_specs + [
        ("Squeeze", "<<squeeze-current-text>>"),
    ]
    _idx = 1 + len(list(itertools.takewhile(
        lambda rmenu_item: rmenu_item[0] != "Copy", rmenu_specs)
    ))
    rmenu_specs.insert(_idx, ("Copy with prompts",
                              "<<copy-with-prompts>>",
                              "rmenu_check_copy"))
    del _idx

    allow_line_numbers = False
    user_input_insert_tags = "stdin"

    # New classes
    from idlelib.history import History
    from idlelib.sidebar import ShellSidebar

    def __init__(self, flist=None):
        ms = self.menu_specs
        if ms[2][0] != "shell":
            ms.insert(2, ("shell", "She_ll"))
        self.interp = ModifiedInterpreter(self)
        if flist is None:
            root = Tk()
            fixwordbreaks(root)
            root.withdraw()
            flist = PyShellFileList(root)

        self.shell_sidebar = None  # initialized below

        OutputWindow.__init__(self, flist, None, None)

        self.usetabs = False
        # indentwidth must be 8 when using tabs.  See note in EditorWindow:
        self.indentwidth = 4

        self.sys_ps1 = sys.ps1 if hasattr(sys, 'ps1') else '>>>\n'