Issue #5124: Temporary pyshell rename to avoid case-folding collision in merge.

1 files changed, 0 insertions, 1618 deletions

diff --git a/Lib/idlelib/pyshell.py b/Lib/idlelib/pyshell.py
deleted file mode 100755
index 38c12cd..0000000
--- a/Lib/idlelib/pyshell.py
+++ /dev/null
@@ -1,1618 +0,0 @@
-#! /usr/bin/env python3
-
-try:
-    from tkinter import *
-except ImportError:
-    print("** IDLE can't import Tkinter.\n"
-          "Your Python may not be configured for Tk. **", file=sys.__stderr__)
-    sys.exit(1)
-import tkinter.messagebox as tkMessageBox
-if TkVersion < 8.5:
-    root = Tk()  # otherwise create root in main
-    root.withdraw()
-    tkMessageBox.showerror("Idle Cannot Start",
-            "Idle requires tcl/tk 8.5+, not $s." % TkVersion,
-            parent=root)
-    sys.exit(1)
-
-import getopt
-import os
-import os.path
-import re
-import socket
-import subprocess
-import sys
-import threading
-import time
-import tokenize
-import io
-
-import linecache
-from code import InteractiveInterpreter
-from platform import python_version, system
-
-from idlelib.editor import EditorWindow, fixwordbreaks
-from idlelib.filelist import FileList
-from idlelib.colorizer import ColorDelegator
-from idlelib.undo import UndoDelegator
-from idlelib.outwin import OutputWindow
-from idlelib.config import idleConf
-from idlelib import rpc
-from idlelib import debugger
-from idlelib import debugger_r
-from idlelib import macosx
-
-HOST = '127.0.0.1' # python execution server on localhost loopback
-PORT = 0  # someday pass in host, port for remote debug capability
-
-# Override warnings module to write to warning_stream.  Initialize to send IDLE
-# internal warnings to the console.  ScriptBinding.check_syntax() will
-# temporarily redirect the stream to the shell window to display warnings when
-# checking user's code.
-warning_stream = sys.__stderr__  # None, at least on Windows, if no console.
-import warnings
-
-def idle_formatwarning(message, category, filename, lineno, line=None):
-    """Format warnings the IDLE way."""
-
-    s = "\nWarning (from warnings module):\n"
-    s += '  File \"%s\", line %s\n' % (filename, lineno)
-    if line is None:
-        line = linecache.getline(filename, lineno)
-    line = line.strip()
-    if line:
-        s += "    %s\n" % line
-    s += "%s: %s\n" % (category.__name__, message)
-    return s
-
-def idle_showwarning(
-        message, category, filename, lineno, file=None, line=None):
-    """Show Idle-format warning (after replacing warnings.showwarning).
-
-    The differences are the formatter called, the file=None replacement,
-    which can be None, the capture of the consequence AttributeError,
-    and the output of a hard-coded prompt.
-    """
-    if file is None:
-        file = warning_stream
-    try:
-        file.write(idle_formatwarning(
-                message, category, filename, lineno, line=line))
-        file.write(">>> ")
-    except (AttributeError, OSError):
-        pass  # if file (probably __stderr__) is invalid, skip warning.
-
-_warnings_showwarning = None
-
-def capture_warnings(capture):
-    "Replace warning.showwarning with idle_showwarning, or reverse."
-
-    global _warnings_showwarning
-    if capture:
-        if _warnings_showwarning is None:
-            _warnings_showwarning = warnings.showwarning
-            warnings.showwarning = idle_showwarning
-    else:
-        if _warnings_showwarning is not None:
-            warnings.showwarning = _warnings_showwarning
-            _warnings_showwarning = None
-
-capture_warnings(True)
-
-def extended_linecache_checkcache(filename=None,
-                                  orig_checkcache=linecache.checkcache):
-    """Extend linecache.checkcache to preserve the <pyshell#...> entries
-
-    Rather than repeating the linecache code, patch it to save the
-    <pyshell#...> entries, call the original linecache.checkcache()
-    (skipping them), and then restore the saved entries.
-
-    orig_checkcache is bound at definition time to the original
-    method, allowing it to be patched.
-    """
-    cache = linecache.cache
-    save = {}
-    for key in list(cache):
-        if key[:1] + key[-1:] == '<>':
-            save[key] = cache.pop(key)
-    orig_checkcache(filename)
-    cache.update(save)
-
-# Patch linecache.checkcache():
-linecache.checkcache = extended_linecache_checkcache
-
-
-class PyShellEditorWindow(EditorWindow):
-    "Regular text edit window in IDLE, supports breakpoints"
-
-    def __init__(self, *args):
-        self.breakpoints = []
-        EditorWindow.__init__(self, *args)
-        self.text.bind("<<set-breakpoint-here>>", self.set_breakpoint_here)
-        self.text.bind("<<clear-breakpoint-here>>", self.clear_breakpoint_here)
-        self.text.bind("<<open-python-shell>>", self.flist.open_shell)
-
-        self.breakpointPath = os.path.join(idleConf.GetUserCfgDir(),
-                                           'breakpoints.lst')
-        # whenever a file is changed, restore breakpoints
-        def filename_changed_hook(old_hook=self.io.filename_change_hook,
-                                  self=self):
-            self.restore_file_breaks()
-            old_hook()
-        self.io.set_filename_change_hook(filename_changed_hook)
-        if self.io.filename:
-            self.restore_file_breaks()
-        self.color_breakpoint_text()
-
-    rmenu_specs = [
-        ("Cut", "<<cut>>", "rmenu_check_cut"),
-        ("Copy", "<<copy>>", "rmenu_check_copy"),
-        ("Paste", "<<paste>>", "rmenu_check_paste"),
-        (None, None, None),
-        ("Set Breakpoint", "<<set-breakpoint-here>>", None),
-        ("Clear Breakpoint", "<<clear-breakpoint-here>>", None)
-    ]
-
-    def color_breakpoint_text(self, color=True):
-        "Turn colorizing of breakpoint text on or off"
-        if self.io is None:
-            # possible due to update in restore_file_breaks
-            return
-        if color:
-            theme = idleConf.CurrentTheme()
-            cfg = idleConf.GetHighlight(theme, "break")
-        else:
-            cfg = {'foreground': '', 'background': ''}
-        self.text.tag_config('BREAK', cfg)
-
-    def set_breakpoint(self, lineno):
-        text = self.text
-        filename = self.io.filename
-        text.tag_add("BREAK", "%d.0" % lineno, "%d.0" % (lineno+1))
-        try:
-            self.breakpoints.index(lineno)
-        except ValueError:  # only add if missing, i.e. do once
-            self.breakpoints.append(lineno)
-        try:    # update the subprocess debugger
-            debug = self.flist.pyshell.interp.debugger
-            debug.set_breakpoint_here(filename, lineno)
-        except: # but debugger may not be active right now....
-            pass
-
-    def set_breakpoint_here(self, event=None):
-        text = self.text
-        filename = self.io.filename
-        if not filename:
-            text.bell()
-            return
-        lineno = int(float(text.index("insert")))
-        self.set_breakpoint(lineno)
-
-    def clear_breakpoint_here(self, event=None):
-        text = self.text
-        filename = self.io.filename
-        if not filename:
-            text.bell()
-            return
-        lineno = int(float(text.index("insert")))
-        try:
-            self.breakpoints.remove(lineno)
-        except:
-            pass
-        text.tag_remove("BREAK", "insert linestart",\
-                        "insert lineend +1char")
-        try:
-            debug = self.flist.pyshell.interp.debugger
-            debug.clear_breakpoint_here(filename, lineno)
-        except:
-            pass
-
-    def clear_file_breaks(self):
-        if self.breakpoints:
-            text = self.text
-            filename = self.io.filename
-            if not filename:
-                text.bell()
-                return
-            self.breakpoints = []
-            text.tag_remove("BREAK", "1.0", END)
-            try:
-                debug = self.flist.pyshell.interp.debugger
-                debug.clear_file_breaks(filename)
-            except:
-                pass
-
-    def store_file_breaks(self):
-        "Save breakpoints when file is saved"
-        # XXX 13 Dec 2002 KBK Currently the file must be saved before it can
-        #     be run.  The breaks are saved at that time.  If we introduce
-        #     a temporary file save feature the save breaks functionality
-        #     needs to be re-verified, since the breaks at the time the
-        #     temp file is created may differ from the breaks at the last
-        #     permanent save of the file.  Currently, a break introduced
-        #     after a save will be effective, but not persistent.
-        #     This is necessary to keep the saved breaks synched with the
-        #     saved file.
-        #
-        #     Breakpoints are set as tagged ranges in the text.
-        #     Since a modified file has to be saved before it is
-        #     run, and since self.breakpoints (from which the subprocess
-        #     debugger is loaded) is updated during the save, the visible
-        #     breaks stay synched with the subprocess even if one of these
-        #     unexpected breakpoint deletions occurs.
-        breaks = self.breakpoints
-        filename = self.io.filename
-        try:
-            with open(self.breakpointPath, "r") as fp:
-                lines = fp.readlines()
-        except OSError:
-            lines = []
-        try:
-            with open(self.breakpointPath, "w") as new_file:
-                for line in lines:
-                    if not line.startswith(filename + '='):
-                        new_file.write(line)
-                self.update_breakpoints()
-                breaks = self.breakpoints
-                if breaks:
-                    new_file.write(filename + '=' + str(breaks) + '\n')
-        except OSError as err:
-            if not getattr(self.root, "breakpoint_error_displayed", False):
-                self.root.breakpoint_error_displayed = True
-                tkMessageBox.showerror(title='IDLE Error',
-                    message='Unable to update breakpoint list:\n%s'
-                        % str(err),
-                    parent=self.text)
-
-    def restore_file_breaks(self):
-        self.text.update()   # this enables setting "BREAK" tags to be visible
-        if self.io is None:
-            # can happen if IDLE closes due to the .update() call
-            return
-        filename = self.io.filename
-        if filename is None:
-            return
-        if os.path.isfile(self.breakpointPath):
-            with open(self.breakpointPath, "r") as fp:
-                lines = fp.readlines()
-            for line in lines:
-                if line.startswith(filename + '='):
-                    breakpoint_linenumbers = eval(line[len(filename)+1:])
-                    for breakpoint_linenumber in breakpoint_linenumbers:
-                        self.set_breakpoint(breakpoint_linenumber)
-
-    def update_breakpoints(self):
-        "Retrieves all the breakpoints in the current window"
-        text = self.text
-        ranges = text.tag_ranges("BREAK")
-        linenumber_list = self.ranges_to_linenumbers(ranges)
-        self.breakpoints = linenumber_list
-
-    def ranges_to_linenumbers(self, ranges):
-        lines = []
-        for index in range(0, len(ranges), 2):
-            lineno = int(float(ranges[index].string))
-            end = int(float(ranges[index+1].string))
-            while lineno < end:
-                lines.append(lineno)
-                lineno += 1
-        return lines
-
-# XXX 13 Dec 2002 KBK Not used currently
-#    def saved_change_hook(self):
-#        "Extend base method - clear breaks if module is modified"
-#        if not self.get_saved():
-#            self.clear_file_breaks()
-#        EditorWindow.saved_change_hook(self)
-
-    def _close(self):
-        "Extend base method - clear breaks when module is closed"
-        self.clear_file_breaks()
-        EditorWindow._close(self)
-
-
-class PyShellFileList(FileList):
-    "Extend base class: IDLE supports a shell and breakpoints"
-
-    # override FileList's class variable, instances return PyShellEditorWindow
-    # instead of EditorWindow when new edit windows are created.
-    EditorWindow = PyShellEditorWindow
-
-    pyshell = None
-
-    def open_shell(self, event=None):
-        if self.pyshell:
-            self.pyshell.top.wakeup()
-        else:
-            self.pyshell = PyShell(self)
-            if self.pyshell:
-                if not self.pyshell.begin():
-                    return None
-        return self.pyshell
-
-
-class ModifiedColorDelegator(ColorDelegator):
-    "Extend base class: colorizer for the shell window itself"
-
-    def __init__(self):
-        ColorDelegator.__init__(self)
-        self.LoadTagDefs()
-
-    def recolorize_main(self):
-        self.tag_remove("TODO", "1.0", "iomark")
-        self.tag_add("SYNC", "1.0", "iomark")
-        ColorDelegator.recolorize_main(self)
-
-    def LoadTagDefs(self):
-        ColorDelegator.LoadTagDefs(self)
-        theme = idleConf.CurrentTheme()
-        self.tagdefs.update({
-            "stdin": {'background':None,'foreground':None},
-            "stdout": idleConf.GetHighlight(theme, "stdout"),
-            "stderr": idleConf.GetHighlight(theme, "stderr"),
-            "console": idleConf.GetHighlight(theme, "console"),
-        })
-
-    def removecolors(self):
-        # Don't remove shell color tags before "iomark"
-        for tag in self.tagdefs:
-            self.tag_remove(tag, "iomark", "end")
-
-class ModifiedUndoDelegator(UndoDelegator):
-    "Extend base class: forbid insert/delete before the I/O mark"
-
-    def insert(self, index, chars, tags=None):
-        try:
-            if self.delegate.compare(index, "<", "iomark"):
-                self.delegate.bell()
-                return
-        except TclError:
-            pass
-        UndoDelegator.insert(self, index, chars, tags)
-
-    def delete(self, index1, index2=None):
-        try:
-            if self.delegate.compare(index1, "<", "iomark"):
-                self.delegate.bell()
-                return
-        except TclError:
-            pass
-        UndoDelegator.delete(self, index1, index2)
-
-
-class MyRPCClient(rpc.RPCClient):
-
-    def handle_EOF(self):
-        "Override the base class - just re-raise EOFError"
-        raise EOFError
-
-
-class ModifiedInterpreter(InteractiveInterpreter):
-
-    def __init__(self, tkconsole):
-        self.tkconsole = tkconsole
-        locals = sys.modules['__main__'].__dict__
-        InteractiveInterpreter.__init__(self, locals=locals)
-        self.save_warnings_filters = None
-        self.restarting = False
-        self.subprocess_arglist = None
-        self.port = PORT
-        self.original_compiler_flags = self.compile.compiler.flags
-
-    _afterid = None
-    rpcclt = None
-    rpcsubproc = None
-
-    def spawn_subprocess(self):
-        if self.subprocess_arglist is None:
-            self.subprocess_arglist = self.build_subprocess_arglist()
-        self.rpcsubproc = subprocess.Popen(self.subprocess_arglist)
-
-    def build_subprocess_arglist(self):
-        assert (self.port!=0), (
-            "Socket should have been assigned a port number.")
-        w = ['-W' + s for s in sys.warnoptions]
-        # Maybe IDLE is installed and is being accessed via sys.path,
-        # or maybe it's not installed and the idle.py script is being
-        # run from the IDLE source directory.
-        del_exitf = idleConf.GetOption('main', 'General', 'delete-exitfunc',
-                                       default=False, type='bool')
-        if __name__ == 'idlelib.pyshell':
-            command = "__import__('idlelib.run').run.main(%r)" % (del_exitf,)
-        else:
-            command = "__import__('run').main(%r)" % (del_exitf,)
-        return [sys.executable] + w + ["-c", command, str(self.port)]
-
-    def start_subprocess(self):
-        addr = (HOST, self.port)
-        # GUI makes several attempts to acquire socket, listens for connection
-        for i in range(3):
-            time.sleep(i)
-            try:
-                self.rpcclt = MyRPCClient(addr)
-                break
-            except OSError:
-                pass
-        else:
-            self.display_port_binding_error()
-            return None
-        # if PORT was 0, system will assign an 'ephemeral' port. Find it out:
-        self.port = self.rpcclt.listening_sock.getsockname()[1]
-        # if PORT was not 0, probably working with a remote execution server
-        if PORT != 0:
-            # To allow reconnection within the 2MSL wait (cf. Stevens TCP
-            # V1, 18.6),  set SO_REUSEADDR.  Note that this can be problematic
-            # on Windows since the implementation allows two active sockets on
-            # the same address!
-            self.rpcclt.listening_sock.setsockopt(socket.SOL_SOCKET,
-                                           socket.SO_REUSEADDR, 1)
-        self.spawn_subprocess()
-        #time.sleep(20) # test to simulate GUI not accepting connection
-        # Accept the connection from the Python execution server
-        self.rpcclt.listening_sock.settimeout(10)
-        try:
-            self.rpcclt.accept()
-        except socket.timeout:
-            self.display_no_subprocess_error()
-            return None
-        self.rpcclt.register("console", self.tkconsole)
-        self.rpcclt.register("stdin", self.tkconsole.stdin)
-        self.rpcclt.register("stdout", self.tkconsole.stdout)
-        self.rpcclt.register("stderr", self.tkconsole.stderr)
-        self.rpcclt.register("flist", self.tkconsole.flist)
-        self.rpcclt.register("linecache", linecache)
-        self.rpcclt.register("interp", self)
-        self.transfer_path(with_cwd=True)
-        self.poll_subprocess()
-        return self.rpcclt
-
-    def restart_subprocess(self, with_cwd=False, filename=''):
-        if self.restarting:
-            return self.rpcclt
-        self.restarting = True
-        # close only the subprocess debugger
-        debug = self.getdebugger()
-        if debug:
-            try:
-                # Only close subprocess debugger, don't unregister gui_adap!
-                debugger_r.close_subprocess_debugger(self.rpcclt)
-            except:
-                pass
-        # Kill subprocess, spawn a new one, accept connection.
-        self.rpcclt.close()
-        self.terminate_subprocess()
-        console = self.tkconsole
-        was_executing = console.executing
-        console.executing = False
-        self.spawn_subprocess()
-        try:
-            self.rpcclt.accept()
-        except socket.timeout:
-            self.display_no_subprocess_error()
-            return None
-        self.transfer_path(with_cwd=with_cwd)
-        console.stop_readline()
-        # annotate restart in shell window and mark it
-        console.text.delete("iomark", "end-1c")
-        tag = 'RESTART: ' + (filename if filename else 'Shell')
-        halfbar = ((int(console.width) -len(tag) - 4) // 2) * '='
-        console.write("\n{0} {1} {0}".format(halfbar, tag))
-        console.text.mark_set("restart", "end-1c")
-        console.text.mark_gravity("restart", "left")
-        if not filename:
-            console.showprompt()
-        # restart subprocess debugger
-        if debug:
-            # Restarted debugger connects to current instance of debug GUI
-            debugger_r.restart_subprocess_debugger(self.rpcclt)
-            # reload remote debugger breakpoints for all PyShellEditWindows
-            debug.load_breakpoints()
-        self.compile.compiler.flags = self.original_compiler_flags
-        self.restarting = False
-        return self.rpcclt
-
-    def __request_interrupt(self):
-        self.rpcclt.remotecall("exec", "interrupt_the_server", (), {})
-
-    def interrupt_subprocess(self):
-        threading.Thread(target=self.__request_interrupt).start()
-
-    def kill_subprocess(self):
-        if self._afterid is not None:
-            self.tkconsole.text.after_cancel(self._afterid)
-        try:
-            self.rpcclt.listening_sock.close()
-        except AttributeError:  # no socket
-            pass
-        try:
-            self.rpcclt.close()
-        except AttributeError:  # no socket
-            pass
-        self.terminate_subprocess()
-        self.tkconsole.executing = False
-        self.rpcclt = None
-
-    def terminate_subprocess(self):
-        "Make sure subprocess is terminated"
-        try:
-            self.rpcsubproc.kill()
-        except OSError:
-            # process already terminated
-            return
-        else:
-            try:
-                self.rpcsubproc.wait()
-            except OSError:
-                return
-
-    def transfer_path(self, with_cwd=False):
-        if with_cwd:        # Issue 13506
-            path = ['']     # include Current Working Directory
-            path.extend(sys.path)
-        else:
-            path = sys.path
-
-        self.runcommand("""if 1:
-        import sys as _sys
-        _sys.path = %r
-        del _sys
-        \n""" % (path,))
-
-    active_seq = None
-
-    def poll_subprocess(self):
-        clt = self.rpcclt
-        if clt is None:
-            return
-        try:
-            response = clt.pollresponse(self.active_seq, wait=0.05)
-        except (EOFError, OSError, KeyboardInterrupt):
-            # lost connection or subprocess terminated itself, restart
-            # [the KBI is from rpc.SocketIO.handle_EOF()]
-            if self.tkconsole.closing:
-                return
-            response = None
-            self.restart_subprocess()
-        if response:
-            self.tkconsole.resetoutput()
-            self.active_seq = None
-            how, what = response
-            console = self.tkconsole.console
-            if how == "OK":
-                if what is not None:
-                    print(repr(what), file=console)
-            elif how == "EXCEPTION":
-                if self.tkconsole.getvar("<<toggle-jit-stack-viewer>>"):
-                    self.remote_stack_viewer()
-            elif how == "ERROR":
-                errmsg = "pyshell.ModifiedInterpreter: Subprocess ERROR:\n"
-                print(errmsg, what, file=sys.__stderr__)
-                print(errmsg, what, file=console)
-            # we received a response to the currently active seq number:
-            try:
-                self.tkconsole.endexecuting()
-            except AttributeError:  # shell may have closed
-                pass
-        # Reschedule myself
-        if not self.tkconsole.closing:
-            self._afterid = self.tkconsole.text.after(
-                self.tkconsole.pollinterval, self.poll_subprocess)
-
-    debugger = None
-
-    def setdebugger(self, debugger):
-        self.debugger = debugger
-
-    def getdebugger(self):
-        return self.debugger
-
-    def open_remote_stack_viewer(self):
-        """Initiate the remote stack viewer from a separate thread.
-
-        This method is called from the subprocess, and by returning from this
-        method we allow the subprocess to unblock.  After a bit the shell
-        requests the subprocess to open the remote stack viewer which returns a
-        static object looking at the last exception.  It is queried through
-        the RPC mechanism.
-
-        """
-        self.tkconsole.text.after(300, self.remote_stack_viewer)
-        return
-
-    def remote_stack_viewer(self):
-        from idlelib import debugobj_r
-        oid = self.rpcclt.remotequeue("exec", "stackviewer", ("flist",), {})
-        if oid is None:
-            self.tkconsole.root.bell()
-            return
-        item = debugobj_r.StubObjectTreeItem(self.rpcclt, oid)
-        from idlelib.tree import ScrolledCanvas, TreeNode
-        top = Toplevel(self.tkconsole.root)
-        theme = idleConf.CurrentTheme()
-        background = idleConf.GetHighlight(theme, 'normal')['background']
-        sc = ScrolledCanvas(top, bg=background, highlightthickness=0)
-        sc.frame.pack(expand=1, fill="both")
-        node = TreeNode(sc.canvas, None, item)
-        node.expand()
-        # XXX Should GC the remote tree when closing the window
-
-    gid = 0
-
-    def execsource(self, source):
-        "Like runsource() but assumes complete exec source"
-        filename = self.stuffsource(source)
-        self.execfile(filename, source)
-
-    def execfile(self, filename, source=None):
-        "Execute an existing file"
-        if source is None:
-            with tokenize.open(filename) as fp:
-                source = fp.read()
-        try:
-            code = compile(source, filename, "exec")
-        except (OverflowError, SyntaxError):
-            self.tkconsole.resetoutput()
-            print('*** Error in script or command!\n'
-                 'Traceback (most recent call last):',
-                  file=self.tkconsole.stderr)
-            InteractiveInterpreter.showsyntaxerror(self, filename)
-            self.tkconsole.showprompt()
-        else:
-            self.runcode(code)
-
-    def runsource(self, source):
-        "Extend base class method: Stuff the source in the line cache first"
-        filename = self.stuffsource(source)
-        self.more = 0
-        self.save_warnings_filters = warnings.filters[:]
-        warnings.filterwarnings(action="error", category=SyntaxWarning)
-        # at the moment, InteractiveInterpreter expects str
-        assert isinstance(source, str)
-        #if isinstance(source, str):
-        #    from idlelib import iomenu
-        #    try:
-        #        source = source.encode(iomenu.encoding)
-        #    except UnicodeError:
-        #        self.tkconsole.resetoutput()
-        #        self.write("Unsupported characters in input\n")
-        #        return
-        try:
-            # InteractiveInterpreter.runsource() calls its runcode() method,
-            # which is overridden (see below)
-            return InteractiveInterpreter.runsource(self, source, filename)
-        finally:
-            if self.save_warnings_filters is not None:
-                warnings.filters[:] = self.save_warnings_filters
-                self.save_warnings_filters = None
-
-    def stuffsource(self, source):
-        "Stuff source in the filename cache"
-        filename = "<pyshell#%d>" % self.gid
-        self.gid = self.gid + 1
-        lines = source.split("\n")
-        linecache.cache[filename] = len(source)+1, 0, lines, filename
-        return filename
-
-    def prepend_syspath(self, filename):
-        "Prepend sys.path with file's directory if not already included"
-        self.runcommand("""if 1:
-            _filename = %r
-            import sys as _sys
-            from os.path import dirname as _dirname
-            _dir = _dirname(_filename)
-            if not _dir in _sys.path:
-                _sys.path.insert(0, _dir)
-            del _filename, _sys, _dirname, _dir
-            \n""" % (filename,))
-
-    def showsyntaxerror(self, filename=None):
-        """Override Interactive Interpreter method: Use Colorizing
-
-        Color the offending position instead of printing it and pointing at it
-        with a caret.
-
-        """
-        tkconsole = self.tkconsole
-        text = tkconsole.text
-        text.tag_remove("ERROR", "1.0", "end")
-        type, value, tb = sys.exc_info()
-        msg = getattr(value, 'msg', '') or value or "<no detail available>"
-        lineno = getattr(value, 'lineno', '') or 1
-        offset = getattr(value, 'offset', '') or 0
-        if offset == 0:
-            lineno += 1 #mark end of offending line
-        if lineno == 1:
-            pos = "iomark + %d chars" % (offset-1)
-        else:
-            pos = "iomark linestart + %d lines + %d chars" % \
-                  (lineno-1, offset-1)
-        tkconsole.colorize_syntax_error(text, pos)
-        tkconsole.resetoutput()
-        self.write("SyntaxError: %s\n" % msg)
-        tkconsole.showprompt()
-
-    def showtraceback(self):
-        "Extend base class method to reset output properly"
-        self.tkconsole.resetoutput()
-        self.checklinecache()
-        InteractiveInterpreter.showtraceback(self)
-        if self.tkconsole.getvar("<<toggle-jit-stack-viewer>>"):
-            self.tkconsole.open_stack_viewer()
-
-    def checklinecache(self):
-        c = linecache.cache
-        for key in list(c.keys()):
-            if key[:1] + key[-1:] != "<>":
-                del c[key]
-
-    def runcommand(self, code):
-        "Run the code without invoking the debugger"
-        # The code better not raise an exception!
-        if self.tkconsole.executing:
-            self.display_executing_dialog()
-            return 0
-        if self.rpcclt:
-            self.rpcclt.remotequeue("exec", "runcode", (code,), {})
-        else:
-            exec(code, self.locals)
-        return 1
-
-    def runcode(self, code):
-        "Override base class method"
-        if self.tkconsole.executing:
-            self.interp.restart_subprocess()
-        self.checklinecache()
-        if self.save_warnings_filters is not None:
-            warnings.filters[:] = self.save_warnings_filters
-            self.save_warnings_filters = None
-        debugger = self.debugger
-        try:
-            self.tkconsole.beginexecuting()
-            if not debugger and self.rpcclt is not None:
-                self.active_seq = self.rpcclt.asyncqueue("exec", "runcode",
-                                                        (code,), {})
-            elif debugger:
-                debugger.run(code, self.locals)
-            else:
-                exec(code, self.locals)
-        except SystemExit:
-            if not self.tkconsole.closing:
-                if tkMessageBox.askyesno(
-                    "Exit?",
-                    "Do you want to exit altogether?",
-                    default="yes",
-                    parent=self.tkconsole.text):
-                    raise
-                else:
-                    self.showtraceback()
-            else:
-                raise
-        except:
-            if use_subprocess:
-                print("IDLE internal error in runcode()",
-                      file=self.tkconsole.stderr)
-                self.showtraceback()
-                self.tkconsole.endexecuting()
-            else:
-                if self.tkconsole.canceled:
-                    self.tkconsole.canceled = False
-                    print("KeyboardInterrupt", file=self.tkconsole.stderr)
-                else:
-                    self.showtraceback()
-        finally:
-            if not use_subprocess:
-                try:
-                    self.tkconsole.endexecuting()
-                except AttributeError:  # shell may have closed
-                    pass
-
-    def write(self, s):
-        "Override base class method"
-        return self.tkconsole.stderr.write(s)
-
-    def display_port_binding_error(self):
-        tkMessageBox.showerror(
-            "Port Binding Error",
-            "IDLE can't bind to a TCP/IP port, which is necessary to "
-            "communicate with its Python execution server.  This might be "
-            "because no networking is installed on this computer.  "
-            "Run IDLE with the -n command line switch to start without a "
-            "subprocess and refer to Help/IDLE Help 'Running without a "
-            "subprocess' for further details.",
-            parent=self.tkconsole.text)
-
-    def display_no_subprocess_error(self):
-        tkMessageBox.showerror(
-            "Subprocess Startup Error",
-            "IDLE's subprocess didn't make connection.  Either IDLE can't "
-            "start a subprocess or personal firewall software is blocking "
-            "the connection.",
-            parent=self.tkconsole.text)
-
-    def display_executing_dialog(self):
-        tkMessageBox.showerror(
-            "Already executing",
-            "The Python Shell window is already executing a command; "
-            "please wait until it is finished.",
-            parent=self.tkconsole.text)
-
-
-class PyShell(OutputWindow):
-
-    shell_title = "Python " + python_version() + " Shell"
-
-    # Override classes
-    ColorDelegator = ModifiedColorDelegator
-    UndoDelegator = ModifiedUndoDelegator
-
-    # Override menus
-    menu_specs = [
-        ("file", "_File"),
-        ("edit", "_Edit"),
-        ("debug", "_Debug"),
-        ("options", "_Options"),
-        ("windows", "_Window"),
-        ("help", "_Help"),
-    ]
-
-
-    # New classes
-    from idlelib.history import History
-
-    def __init__(self, flist=None):
-        if use_subprocess:
-            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)
-        #
-        OutputWindow.__init__(self, flist, None, None)
-        #
-##        self.config(usetabs=1, indentwidth=8, context_use_ps1=1)
-        self.usetabs = True
-        # indentwidth must be 8 when using tabs.  See note in EditorWindow:
-        self.indentwidth = 8
-        self.context_use_ps1 = True
-        #
-        text = self.text
-        text.configure(wrap="char")
-        text.bind("<<newline-and-indent>>", self.enter_callback)
-        text.bind("<<plain-newline-and-indent>>", self.linefeed_callback)
-        text.bind("<<interrupt-execution>>", self.cancel_callback)
-        text.bind("<<end-of-file>>", self.eof_callback)
-        text.bind("<<open-stack-viewer>>", self.open_stack_viewer)
-        text.bind("<<toggle-debugger>>", self.toggle_debugger)
-        text.bind("<<toggle-jit-stack-viewer>>", self.toggle_jit_stack_viewer)
-        if use_subprocess:
-            text.bind("<<view-restart>>", self.view_restart_mark)
-            text.bind("<<restart-shell>>", self.restart_shell)
-        #
-        self.save_stdout = sys.stdout
-        self.save_stderr = sys.stderr
-        self.save_stdin = sys.stdin
-        from idlelib import iomenu
-        self.stdin = PseudoInputFile(self, "stdin", iomenu.encoding)
-        self.stdout = PseudoOutputFile(self, "stdout", iomenu.encoding)
-        self.stderr = PseudoOutputFile(self, "stderr", iomenu.encoding)
-        self.console = PseudoOutputFile(self, "console", iomenu.encoding)
-        if not use_subprocess:
-            sys.stdout = self.stdout
-            sys.stderr = self.stderr
-            sys.stdin = self.stdin
-        try:
-            # page help() text to shell.
-            import pydoc # import must be done here to capture i/o rebinding.
-            # XXX KBK 27Dec07 use TextViewer someday, but must work w/o subproc
-            pydoc.pager = pydoc.plainpager
-        except:
-            sys.stderr = sys.__stderr__
-            raise
-        #
-        self.history = self.History(self.text)
-        #
-        self.pollinterval = 50  # millisec
-
-    def get_standard_extension_names(self):
-        return idleConf.GetExtensions(shell_only=True)
-
-    reading = False
-    executing = False
-    canceled = False
-    endoffile = False
-    closing = False
-    _stop_readline_flag = False
-
-    def set_warning_stream(self, stream):
-        global warning_stream
-        warning_stream = stream
-
-    def get_warning_stream(self):
-        return warning_stream
-
-    def toggle_debugger(self, event=None):
-        if self.executing:
-            tkMessageBox.showerror("Don't debug now",
-                "You can only toggle the debugger when idle",
-                parent=self.text)
-            self.set_debugger_indicator()
-            return "break"
-        else:
-            db = self.interp.getdebugger()
-            if db:
-                self.close_debugger()
-            else:
-                self.open_debugger()
-
-    def set_debugger_indicator(self):
-        db = self.interp.getdebugger()
-        self.setvar("<<toggle-debugger>>", not not db)
-
-    def toggle_jit_stack_viewer(self, event=None):
-        pass # All we need is the variable
-
-    def close_debugger(self):
-        db = self.interp.getdebugger()
-        if db:
-            self.interp.setdebugger(None)
-            db.close()
-            if self.interp.rpcclt:
-                debugger_r.close_remote_debugger(self.interp.rpcclt)
-            self.resetoutput()
-            self.console.write("[DEBUG OFF]\n")
-            sys.ps1 = ">>> "
-            self.showprompt()
-        self.set_debugger_indicator()
-
-    def open_debugger(self):
-        if self.interp.rpcclt:
-            dbg_gui = debugger_r.start_remote_debugger(self.interp.rpcclt,
-                                                           self)
-        else:
-            dbg_gui = debugger.Debugger(self)
-        self.interp.setdebugger(dbg_gui)
-        dbg_gui.load_breakpoints()
-        sys.ps1 = "[DEBUG ON]\n>>> "
-        self.showprompt()
-        self.set_debugger_indicator()
-
-    def beginexecuting(self):
-        "Helper for ModifiedInterpreter"
-        self.resetoutput()
-        self.executing = 1
-
-    def endexecuting(self):
-        "Helper for ModifiedInterpreter"
-        self.executing = 0
-        self.canceled = 0
-        self.showprompt()
-
-    def close(self):
-        "Extend EditorWindow.close()"
-        if self.executing:
-            response = tkMessageBox.askokcancel(
-                "Kill?",
-                "Your program is still running!\n Do you want to kill it?",
-                default="ok",
-                parent=self.text)
-            if response is False:
-                return "cancel"
-        self.stop_readline()
-        self.canceled = True
-        self.closing = True
-        return EditorWindow.close(self)
-
-    def _close(self):
-        "Extend EditorWindow._close(), shut down debugger and execution server"
-        self.close_debugger()
-        if use_subprocess:
-            self.interp.kill_subprocess()
-        # Restore std streams
-        sys.stdout = self.save_stdout
-        sys.stderr = self.save_stderr
-        sys.stdin = self.save_stdin
-        # Break cycles
-        self.interp = None
-        self.console = None
-        self.flist.pyshell = None
-        self.history = None
-        EditorWindow._close(self)
-
-    def ispythonsource(self, filename):
-        "Override EditorWindow method: never remove the colorizer"
-        return True
-
-    def short_title(self):
-        return self.shell_title
-
-    COPYRIGHT = \
-          'Type "copyright", "credits" or "license()" for more information.'
-
-    def begin(self):
-        self.text.mark_set("iomark", "insert")
-        self.resetoutput()
-        if use_subprocess:
-            nosub = ''
-            client = self.interp.start_subprocess()
-            if not client:
-                self.close()
-                return False
-        else:
-            nosub = ("==== No Subprocess ====\n\n" +
-                    "WARNING: Running IDLE without a Subprocess is deprecated\n" +
-                    "and will be removed in a later version. See Help/IDLE Help\n" +
-                    "for details.\n\n")
-            sys.displayhook = rpc.displayhook
-
-        self.write("Python %s on %s\n%s\n%s" %
-                   (sys.version, sys.platform, self.COPYRIGHT, nosub))
-        self.text.focus_force()
-        self.showprompt()
-        import tkinter
-        tkinter._default_root = None # 03Jan04 KBK What's this?
-        return True
-
-    def stop_readline(self):
-        if not self.reading:  # no nested mainloop to exit.
-            return
-        self._stop_readline_flag = True
-        self.top.quit()
-
-    def readline(self):
-        save = self.reading
-        try:
-            self.reading = 1
-            self.top.mainloop()  # nested mainloop()
-        finally:
-            self.reading = save
-        if self._stop_readline_flag:
-            self._stop_readline_flag = False
-            return ""
-        line = self.text.get("iomark", "end-1c")
-        if len(line) == 0:  # may be EOF if we quit our mainloop with Ctrl-C
-            line = "\n"
-        self.resetoutput()
-        if self.canceled:
-            self.canceled = 0
-            if not use_subprocess:
-                raise KeyboardInterrupt
-        if self.endoffile:
-            self.endoffile = 0
-            line = ""
-        return line
-
-    def isatty(self):
-        return True
-
-    def cancel_callback(self, event=None):
-        try:
-            if self.text.compare("sel.first", "!=", "sel.last"):
-                return # Active selection -- always use default binding
-        except:
-            pass
-        if not (self.executing or self.reading):
-            self.resetoutput()
-            self.interp.write("KeyboardInterrupt\n")
-            self.showprompt()
-            return "break"
-        self.endoffile = 0
-        self.canceled = 1
-        if (self.executing and self.interp.rpcclt):
-            if self.interp.getdebugger():
-                self.interp.restart_subprocess()
-            else:
-                self.interp.interrupt_subprocess()
-        if self.reading:
-            self.top.quit()  # exit the nested mainloop() in readline()
-        return "break"
-
-    def eof_callback(self, event):
-        if self.executing and not self.reading:
-            return # Let the default binding (delete next char) take over
-        if not (self.text.compare("iomark", "==", "insert") and
-                self.text.compare("insert", "==", "end-1c")):
-            return # Let the default binding (delete next char) take over
-        if not self.executing:
-            self.resetoutput()
-            self.close()
-        else:
-            self.canceled = 0
-            self.endoffile = 1
-            self.top.quit()
-        return "break"
-
-    def linefeed_callback(self, event):
-        # Insert a linefeed without entering anything (still autoindented)
-        if self.reading:
-            self.text.insert("insert", "\n")
-            self.text.see("insert")
-        else:
-            self.newline_and_indent_event(event)
-        return "break"
-
-    def enter_callback(self, event):
-        if self.executing and not self.reading:
-            return # Let the default binding (insert '\n') take over
-        # If some text is selected, recall the selection
-        # (but only if this before the I/O mark)
-        try:
-            sel = self.text.get("sel.first", "sel.last")
-            if sel:
-                if self.text.compare("sel.last", "<=", "iomark"):
-                    self.recall(sel, event)
-                    return "break"
-        except:
-            pass
-        # If we're strictly before the line containing iomark, recall
-        # the current line, less a leading prompt, less leading or
-        # trailing whitespace
-        if self.text.compare("insert", "<", "iomark linestart"):
-            # Check if there's a relevant stdin range -- if so, use it
-            prev = self.text.tag_prevrange("stdin", "insert")
-            if prev and self.text.compare("insert", "<", prev[1]):
-                self.recall(self.text.get(prev[0], prev[1]), event)
-                return "break"
-            next = self.text.tag_nextrange("stdin", "insert")
-            if next and self.text.compare("insert lineend", ">=", next[0]):
-                self.recall(self.text.get(next[0], next[1]), event)
-                return "break"
-            # No stdin mark -- just get the current line, less any prompt
-            indices = self.text.tag_nextrange("console", "insert linestart")
-            if indices and \
-               self.text.compare(indices[0], "<=", "insert linestart"):
-                self.recall(self.text.get(indices[1], "insert lineend"), event)
-            else:
-                self.recall(self.text.get("insert linestart", "insert lineend"), event)
-            return "break"
-        # If we're between the beginning of the line and the iomark, i.e.
-        # in the prompt area, move to the end of the prompt
-        if self.text.compare("insert", "<", "iomark"):
-            self.text.mark_set("insert", "iomark")
-        # If we're in the current input and there's only whitespace
-        # beyond the cursor, erase that whitespace first
-        s = self.text.get("insert", "end-1c")
-        if s and not s.strip():
-            self.text.delete("insert", "end-1c")
-        # If we're in the current input before its last line,
-        # insert a newline right at the insert point
-        if self.text.compare("insert", "<", "end-1c linestart"):
-            self.newline_and_indent_event(event)
-            return "break"
-        # We're in the last line; append a newline and submit it
-        self.text.mark_set("insert", "end-1c")
-        if self.reading:
-            self.text.insert("insert", "\n")
-            self.text.see("insert")
-        else:
-            self.newline_and_indent_event(event)
-        self.text.tag_add("stdin", "iomark", "end-1c")
-        self.text.update_idletasks()
-        if self.reading:
-            self.top.quit() # Break out of recursive mainloop()
-        else:
-            self.runit()
-        return "break"
-
-    def recall(self, s, event):
-        # remove leading and trailing empty or whitespace lines
-        s = re.sub(r'^\s*\n', '' , s)
-        s = re.sub(r'\n\s*$', '', s)
-        lines = s.split('\n')
-        self.text.undo_block_start()
-        try:
-            self.text.tag_remove("sel", "1.0", "end")
-            self.text.mark_set("insert", "end-1c")
-            prefix = self.text.get("insert linestart", "insert")
-            if prefix.rstrip().endswith(':'):
-                self.newline_and_indent_event(event)
-                prefix = self.text.get("insert linestart", "insert")
-            self.text.insert("insert", lines[0].strip())
-            if len(lines) > 1:
-                orig_base_indent = re.search(r'^([ \t]*)', lines[0]).group(0)
-                new_base_indent  = re.search(r'^([ \t]*)', prefix).group(0)
-                for line in lines[1:]:
-                    if line.startswith(orig_base_indent):
-                        # replace orig base indentation with new indentation
-                        line = new_base_indent + line[len(orig_base_indent):]
-                    self.text.insert('insert', '\n'+line.rstrip())
-        finally:
-            self.text.see("insert")
-            self.text.undo_block_stop()
-
-    def runit(self):
-        line = self.text.get("iomark", "end-1c")
-        # Strip off last newline and surrounding whitespace.
-        # (To allow you to hit return twice to end a statement.)
-        i = len(line)
-        while i > 0 and line[i-1] in " \t":
-            i = i-1
-        if i > 0 and line[i-1] == "\n":
-            i = i-1
-        while i > 0 and line[i-1] in " \t":
-            i = i-1
-        line = line[:i]
-        self.interp.runsource(line)
-
-    def open_stack_viewer(self, event=None):
-        if self.interp.rpcclt:
-            return self.interp.remote_stack_viewer()
-        try:
-            sys.last_traceback
-        except:
-            tkMessageBox.showerror("No stack trace",
-                "There is no stack trace yet.\n"
-                "(sys.last_traceback is not defined)",
-                parent=self.text)
-            return
-        from idlelib.stackviewer import StackBrowser
-        StackBrowser(self.root, self.flist)
-
-    def view_restart_mark(self, event=None):
-        self.text.see("iomark")
-        self.text.see("restart")
-
-    def restart_shell(self, event=None):
-        "Callback for Run/Restart Shell Cntl-F6"
-        self.interp.restart_subprocess(with_cwd=True)
-
-    def showprompt(self):
-        self.resetoutput()
-        try:
-            s = str(sys.ps1)
-        except:
-            s = ""
-        self.console.write(s)
-        self.text.mark_set("insert", "end-1c")
-        self.set_line_and_column()
-        self.io.reset_undo()
-
-    def resetoutput(self):
-        source = self.text.get("iomark", "end-1c")
-        if self.history:
-            self.history.store(source)
-        if self.text.get("end-2c") != "\n":
-            self.text.insert("end-1c", "\n")
-        self.text.mark_set("iomark", "end-1c")
-        self.set_line_and_column()
-
-    def write(self, s, tags=()):
-        if isinstance(s, str) and len(s) and max(s) > '\uffff':
-            # Tk doesn't support outputting non-BMP characters
-            # Let's assume what printed string is not very long,
-            # find first non-BMP character and construct informative
-            # UnicodeEncodeError exception.
-            for start, char in enumerate(s):
-                if char > '\uffff':
-                    break
-            raise UnicodeEncodeError("UCS-2", char, start, start+1,
-                                     'Non-BMP character not supported in Tk')
-        try:
-            self.text.mark_gravity("iomark", "right")
-            count = OutputWindow.write(self, s, tags, "iomark")
-            self.text.mark_gravity("iomark", "left")
-        except:
-            raise ###pass  # ### 11Aug07 KBK if we are expecting exceptions
-                           # let's find out what they are and be specific.
-        if self.canceled:
-            self.canceled = 0
-            if not use_subprocess:
-                raise KeyboardInterrupt
-        return count
-
-    def rmenu_check_cut(self):
-        try:
-            if self.text.compare('sel.first', '<', 'iomark'):
-                return 'disabled'
-        except TclError: # no selection, so the index 'sel.first' doesn't exist
-            return 'disabled'
-        return super().rmenu_check_cut()
-
-    def rmenu_check_paste(self):
-        if self.text.compare('insert','<','iomark'):
-            return 'disabled'
-        return super().rmenu_check_paste()
-
-class PseudoFile(io.TextIOBase):
-
-    def __init__(self, shell, tags, encoding=None):
-        self.shell = shell
-        self.tags = tags
-        self._encoding = encoding
-
-    @property
-    def encoding(self):
-        return self._encoding
-
-    @property
-    def name(self):
-        return '<%s>' % self.tags
-
-    def isatty(self):
-        return True
-
-
-class PseudoOutputFile(PseudoFile):
-
-    def writable(self):
-        return True
-
-    def write(self, s):
-        if self.closed:
-            raise ValueError("write to closed file")
-        if type(s) is not str:
-            if not isinstance(s, str):
-                raise TypeError('must be str, not ' + type(s).__name__)
-            # See issue #19481
-            s = str.__str__(s)
-        return self.shell.write(s, self.tags)
-
-
-class PseudoInputFile(PseudoFile):
-
-    def __init__(self, shell, tags, encoding=None):
-        PseudoFile.__init__(self, shell, tags, encoding)
-        self._line_buffer = ''
-
-    def readable(self):
-        return True
-
-    def read(self, size=-1):
-        if self.closed:
-            raise ValueError("read from closed file")
-        if size is None:
-            size = -1
-        elif not isinstance(size, int):
-            raise TypeError('must be int, not ' + type(size).__name__)
-        result = self._line_buffer
-        self._line_buffer = ''
-        if size < 0:
-            while True:
-                line = self.shell.readline()
-                if not line: break
-                result += line
-        else:
-            while len(result) < size:
-                line = self.shell.readline()
-                if not line: break
-                result += line
-            self._line_buffer = result[size:]
-            result = result[:size]
-        return result
-
-    def readline(self, size=-1):
-        if self.closed:
-            raise ValueError("read from closed file")
-        if size is None:
-            size = -1
-        elif not isinstance(size, int):
-            raise TypeError('must be int, not ' + type(size).__name__)
-        line = self._line_buffer or self.shell.readline()
-        if size < 0:
-            size = len(line)
-        eol = line.find('\n', 0, size)
-        if eol >= 0:
-            size = eol + 1
-        self._line_buffer = line[size:]
-        return line[:size]
-
-    def close(self):
-        self.shell.close()
-
-
-usage_msg = """\
-
-USAGE: idle  [-deins] [-t title] [file]*
-       idle  [-dns] [-t title] (-c cmd | -r file) [arg]*
-       idle  [-dns] [-t title] - [arg]*
-
-  -h         print this help message and exit
-  -n         run IDLE without a subprocess (DEPRECATED,
-             see Help/IDLE Help for details)
-
-The following options will override the IDLE 'settings' configuration:
-
-  -e         open an edit window
-  -i         open a shell window
-
-The following options imply -i and will open a shell:
-
-  -c cmd     run the command in a shell, or
-  -r file    run script from file
-
-  -d         enable the debugger
-  -s         run $IDLESTARTUP or $PYTHONSTARTUP before anything else
-  -t title   set title of shell window
-
-A default edit window will be bypassed when -c, -r, or - are used.
-
-[arg]* are passed to the command (-c) or script (-r) in sys.argv[1:].
-
-Examples:
-
-idle
-        Open an edit window or shell depending on IDLE's configuration.
-
-idle foo.py foobar.py
-        Edit the files, also open a shell if configured to start with shell.
-
-idle -est "Baz" foo.py
-        Run $IDLESTARTUP or $PYTHONSTARTUP, edit foo.py, and open a shell
-        window with the title "Baz".
-
-idle -c "import sys; print(sys.argv)" "foo"
-        Open a shell window and run the command, passing "-c" in sys.argv[0]
-        and "foo" in sys.argv[1].
-
-idle -d -s -r foo.py "Hello World"
-        Open a shell window, run a startup script, enable the debugger, and
-        run foo.py, passing "foo.py" in sys.argv[0] and "Hello World" in
-        sys.argv[1].
-
-echo "import sys; print(sys.argv)" | idle - "foobar"
-        Open a shell window, run the script piped in, passing '' in sys.argv[0]
-        and "foobar" in sys.argv[1].
-"""
-
-def main():
-    global flist, root, use_subprocess
-
-    capture_warnings(True)
-    use_subprocess = True
-    enable_shell = False
-    enable_edit = False
-    debug = False
-    cmd = None
-    script = None
-    startup = False
-    try:
-        opts, args = getopt.getopt(sys.argv[1:], "c:deihnr:st:")
-    except getopt.error as msg:
-        print("Error: %s\n%s" % (msg, usage_msg), file=sys.stderr)
-        sys.exit(2)
-    for o, a in opts:
-        if o == '-c':
-            cmd = a
-            enable_shell = True
-        if o == '-d':
-            debug = True
-            enable_shell = True
-        if o == '-e':
-            enable_edit = True
-        if o == '-h':
-            sys.stdout.write(usage_msg)
-            sys.exit()
-        if o == '-i':
-            enable_shell = True
-        if o == '-n':
-            print(" Warning: running IDLE without a subprocess is deprecated.",
-                  file=sys.stderr)
-            use_subprocess = False
-        if o == '-r':
-            script = a
-            if os.path.isfile(script):
-                pass
-            else:
-                print("No script file: ", script)
-                sys.exit()
-            enable_shell = True
-        if o == '-s':
-            startup = True
-            enable_shell = True
-        if o == '-t':
-            PyShell.shell_title = a
-            enable_shell = True
-    if args and args[0] == '-':
-        cmd = sys.stdin.read()
-        enable_shell = True
-    # process sys.argv and sys.path:
-    for i in range(len(sys.path)):
-        sys.path[i] = os.path.abspath(sys.path[i])
-    if args and args[0] == '-':
-        sys.argv = [''] + args[1:]
-    elif cmd:
-        sys.argv = ['-c'] + args
-    elif script:
-        sys.argv = [script] + args
-    elif args:
-        enable_edit = True
-        pathx = []
-        for filename in args:
-            pathx.append(os.path.dirname(filename))
-        for dir in pathx:
-            dir = os.path.abspath(dir)
-            if not dir in sys.path:
-                sys.path.insert(0, dir)
-    else:
-        dir = os.getcwd()
-        if dir not in sys.path:
-            sys.path.insert(0, dir)
-    # check the IDLE settings configuration (but command line overrides)
-    edit_start = idleConf.GetOption('main', 'General',
-                                    'editor-on-startup', type='bool')
-    enable_edit = enable_edit or edit_start
-    enable_shell = enable_shell or not enable_edit
-    # start editor and/or shell windows:
-    root = Tk(className="Idle")
-
-    # set application icon
-    icondir = os.path.join(os.path.dirname(__file__), 'Icons')
-    if system() == 'Windows':
-        iconfile = os.path.join(icondir, 'idle.ico')
-        root.wm_iconbitmap(default=iconfile)
-    else:
-        ext = '.png' if TkVersion >= 8.6 else '.gif'
-        iconfiles = [os.path.join(icondir, 'idle_%d%s' % (size, ext))
-                     for size in (16, 32, 48)]
-        icons = [PhotoImage(file=iconfile) for iconfile in iconfiles]
-        root.wm_iconphoto(True, *icons)
-
-    fixwordbreaks(root)
-    root.withdraw()
-    flist = PyShellFileList(root)
-    macosx.setupApp(root, flist)
-
-    if enable_edit:
-        if not (cmd or script):
-            for filename in args[:]:
-                if flist.open(filename) is None:
-                    # filename is a directory actually, disconsider it
-                    args.remove(filename)
-            if not args:
-                flist.new()
-
-    if enable_shell:
-        shell = flist.open_shell()
-        if not shell:
-            return # couldn't open shell
-        if macosx.isAquaTk() and flist.dict:
-            # On OSX: when the user has double-clicked on a file that causes
-            # IDLE to be launched the shell window will open just in front of
-            # the file she wants to see. Lower the interpreter window when
-            # there are open files.
-            shell.top.lower()
-    else:
-        shell = flist.pyshell
-
-    # Handle remaining options. If any of these are set, enable_shell
-    # was set also, so shell must be true to reach here.
-    if debug:
-        shell.open_debugger()
-    if startup:
-        filename = os.environ.get("IDLESTARTUP") or \
-                   os.environ.get("PYTHONSTARTUP")
-        if filename and os.path.isfile(filename):
-            shell.interp.execfile(filename)
-    if cmd or script:
-        shell.interp.runcommand("""if 1:
-            import sys as _sys
-            _sys.argv = %r
-            del _sys
-            \n""" % (sys.argv,))
-        if cmd:
-            shell.interp.execsource(cmd)
-        elif script:
-            shell.interp.prepend_syspath(script)
-            shell.interp.execfile(script)
-    elif shell:
-        # If there is a shell window and no cmd or script in progress,
-        # check for problematic OS X Tk versions and print a warning
-        # message in the IDLE shell window; this is less intrusive
-        # than always opening a separate window.
-        tkversionwarning = macosx.tkVersionWarning(root)
-        if tkversionwarning:
-            shell.interp.runcommand("print('%s')" % tkversionwarning)
-
-    while flist.inversedict:  # keep IDLE running while files are open.
-        root.mainloop()
-    root.destroy()
-    capture_warnings(False)
-
-if __name__ == "__main__":
-    sys.modules['pyshell'] = sys.modules['__main__']
-    main()
-
-capture_warnings(False)  # Make sure turned off; see issue 18081