Debugger raising exception when typing command to Debug Console

Environment data

• VS Code version: 1.28.0
• Extension version : 2018.9.0
• OS and version: Microsoft Windows [Version 10.0.17763.1]
• Conda version : Anaconda 4.5.11
• Python version: 3.6.6, 3.5.5
• Type of virtual environment used : conda

Actual behavior

Since last update, when trying to debug a code by typing a command on the Debug Console after it hit a breakpoint, the debugger raises an exception as soon as the first character is typed.

Expected behavior

No exception

Steps to reproduce:

def main():
    a_string = "hello world"
    print(a_string)

if __name__ == "__main__":
    main()

1. Start debugging
2. Wait until it hits a breakpoint (i.e: on print(a_string))
3. Try to type a command on Debug Console (i.e: a_string)
4. Watch Debug Console and Terminal

Logs

Console Output

Microsoft Windows [Version 10.0.17763.1]
(c) 2018 Microsoft Corporation. All rights reserved.

D:\Source\Repos\vscode_bug>


                           activate base

(base) D:\Source\Repos\vscode_bug>cd d:\Source\Repos\vscode_bug && cmd /C "set "PYTHONIOENCODING=UTF-8" && set "PYTHONUNBUFFERED=1" && C:\ProgramData\Anaconda3\python.exe c:\Users\gloch\.vscode\extensions\ms-python.python-2018.9.0\pythonFiles\experimental\ptvsd_launcher.py 54696 d:\Source\Repos\vscode_bug\vscode_debug_test.py "
Traceback (most recent call last):
  File "c:\Users\gloch\.vscode\extensions\ms-python.python-2018.9.0\pythonFiles\experimental\ptvsd\ptvsd\_vendored\pydevd\pydevconsole.py", line 449, in get_interpreter
    interpreterInterface = getattr(__builtin__, 'interpreter')
AttributeError: module 'builtins' has no attribute 'interpreter'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "c:\Users\gloch\.vscode\extensions\ms-python.python-2018.9.0\pythonFiles\experimental\ptvsd\ptvsd\_vendored\pydevd\_pydevd_bundle\pydevd_comm.py", line 1419, in do_it
    msg = _pydev_completer.generate_completions_as_xml(frame, self.act_tok)
  File "c:\Users\gloch\.vscode\extensions\ms-python.python-2018.9.0\pythonFiles\experimental\ptvsd\ptvsd\_vendored\pydevd\_pydev_bundle\_pydev_completer.py", line 167, in generate_completions_as_xml
    completions = pydevconsole.get_completions(act_tok, act_tok, updated_globals, frame.f_locals)
  File "c:\Users\gloch\.vscode\extensions\ms-python.python-2018.9.0\pythonFiles\experimental\ptvsd\ptvsd\_vendored\pydevd\pydevconsole.py", line 460, in get_completions
    interpreterInterface = get_interpreter()
  File "c:\Users\gloch\.vscode\extensions\ms-python.python-2018.9.0\pythonFiles\experimental\ptvsd\ptvsd\_vendored\pydevd\pydevconsole.py", line 451, in get_interpreter
    interpreterInterface = InterpreterInterface(None, None, threading.currentThread())
  File "c:\Users\gloch\.vscode\extensions\ms-python.python-2018.9.0\pythonFiles\experimental\ptvsd\ptvsd\_vendored\pydevd\_pydev_bundle\pydev_ipython_console.py", line 25, in __init__
    self.interpreter = get_pydev_frontend(host, client_port)
  File "c:\Users\gloch\.vscode\extensions\ms-python.python-2018.9.0\pythonFiles\experimental\ptvsd\ptvsd\_vendored\pydevd\_pydev_bundle\pydev_ipython_console_011.py", line 491, in get_pydev_frontend
    _PyDevFrontEndContainer._instance = _PyDevFrontEnd()
  File "c:\Users\gloch\.vscode\extensions\ms-python.python-2018.9.0\pythonFiles\experimental\ptvsd\ptvsd\_vendored\pydevd\_pydev_bundle\pydev_ipython_console_011.py", line 340, in __init__
    self.ipython = PyDevTerminalInteractiveShell.instance()
  File "C:\ProgramData\Anaconda3\lib\site-packages\traitlets\config\configurable.py", line 412, in instance
    inst = cls(*args, **kwargs)
  File "C:\ProgramData\Anaconda3\lib\site-packages\IPython\terminal\interactiveshell.py", line 425, in __init__
    super(TerminalInteractiveShell, self).__init__(*args, **kwargs)
  File "C:\ProgramData\Anaconda3\lib\site-packages\IPython\core\interactiveshell.py", line 488, in __init__
    self.init_completer()
  File "c:\Users\gloch\.vscode\extensions\ms-python.python-2018.9.0\pythonFiles\experimental\ptvsd\ptvsd\_vendored\pydevd\_pydev_bundle\pydev_ipython_console_011.py", line 262, in init_completer
    self.Completer = self._new_completer_600()
  File "c:\Users\gloch\.vscode\extensions\ms-python.python-2018.9.0\pythonFiles\experimental\ptvsd\ptvsd\_vendored\pydevd\_pydev_bundle\pydev_ipython_console_011.py", line 224, in _new_completer_600
    parent=self
  File "c:\Users\gloch\.vscode\extensions\ms-python.python-2018.9.0\pythonFiles\experimental\ptvsd\ptvsd\_vendored\pydevd\_pydev_bundle\pydev_ipython_console_011.py", line 95, in __init__
    IPCompleter.__init__(self, *args, **kwargs)
  File "C:\ProgramData\Anaconda3\lib\site-packages\IPython\core\completer.py", line 1110, in __init__
    self.dict_key_matches,
AttributeError: can't set attribute

Traceback (most recent call last):
  File "C:\ProgramData\Anaconda3\lib\xml\sax\expatreader.py", line 217, in feed
    self._parser.Parse(data, isFinal)
xml.parsers.expat.ExpatError: syntax error: line 1, column 0

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "c:\Users\gloch\.vscode\extensions\ms-python.python-2018.9.0\pythonFiles\experimental\ptvsd\ptvsd\wrapper.py", line 1292, in done
    fut.result()
  File "c:\Users\gloch\.vscode\extensions\ms-python.python-2018.9.0\pythonFiles\experimental\ptvsd\ptvsd\futures.py", line 40, in result
    reraise(self._exc_info)
  File "c:\Users\gloch\.vscode\extensions\ms-python.python-2018.9.0\pythonFiles\experimental\ptvsd\ptvsd\reraise3.py", line 8, in reraise
    raise exc_info[1].with_traceback(exc_info[2])
  File "c:\Users\gloch\.vscode\extensions\ms-python.python-2018.9.0\pythonFiles\experimental\ptvsd\ptvsd\futures.py", line 155, in callback
    x = it.send(fut.result())
  File "c:\Users\gloch\.vscode\extensions\ms-python.python-2018.9.0\pythonFiles\experimental\ptvsd\ptvsd\wrapper.py", line 2272, in on_completions
    xml = self.parse_xml_response(resp_args)
  File "c:\Users\gloch\.vscode\extensions\ms-python.python-2018.9.0\pythonFiles\experimental\ptvsd\ptvsd\wrapper.py", line 1345, in parse_xml_response
    return untangle.parse(io.BytesIO(args.encode('utf8'))).xml
  File "c:\Users\gloch\.vscode\extensions\ms-python.python-2018.9.0\pythonFiles\experimental\ptvsd\ptvsd\untangle.py", line 198, in parse
    parser.parse(filename)
  File "C:\ProgramData\Anaconda3\lib\xml\sax\expatreader.py", line 111, in parse
    xmlreader.IncrementalParser.parse(self, source)
  File "C:\ProgramData\Anaconda3\lib\xml\sax\xmlreader.py", line 125, in parse
    self.feed(buffer)
  File "C:\ProgramData\Anaconda3\lib\xml\sax\expatreader.py", line 221, in feed
    self._err_handler.fatalError(exc)
  File "C:\ProgramData\Anaconda3\lib\xml\sax\handler.py", line 38, in fatalError
    raise exception
xml.sax._exceptions.SAXParseException: <unknown>:1:0: syntax error

launch.json

{
    // Use IntelliSense to learn about possible attributes.
    // Hover to view descriptions of existing attributes.
    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
    "version": "0.2.0",
    "configurations": [
        {
            "name": "Python: Current File (Integrated Terminal)",
            "type": "python",
            "request": "launch",
            "program": "${file}",
            "console": "integratedTerminal"
        }
    ]
}

[gnloch]

@fabioz this bug appeared using ipython 6.2.1. Coincidentally, I was about to report that updating to ipython 6.5.0 solves this issue. Given that this issue was not related to vscode-python, I will close it.

[karthiknadig]

Upstream ptvsd issue https://github.com/Microsoft/ptvsd/issues/920