Início / ubuntu / Perguntas / 1106943
Accepted
BlandCorporation
Asked: 2019-01-05 06:50:56 +0800 CST

SyntaxError sobre async ao tentar executar o Jupyter no Python 3.7

  • 772

Ao tentar iniciar o Jupyter no Python 3.7, observo o seguinte:

$ jupyter notebook
Traceback (most recent call last):
  File "/usr/local/bin/jupyter-notebook", line 11, in <module>
    sys.exit(main())
  File "/usr/local/lib/python3.7/dist-packages/jupyter_core/application.py", line 266, in launch_instance
    return super(JupyterApp, cls).launch_instance(argv=argv, **kwargs)
  File "/usr/local/lib/python3.7/dist-packages/traitlets/config/application.py", line 657, in launch_instance
    app.initialize(argv)
  File "<decorator-gen-7>", line 2, in initialize
  File "/usr/local/lib/python3.7/dist-packages/traitlets/config/application.py", line 87, in catch_config_error
    return method(app, *args, **kwargs)
  File "/usr/local/lib/python3.7/dist-packages/notebook/notebookapp.py", line 1629, in initialize
    self.init_webapp()
  File "/usr/local/lib/python3.7/dist-packages/notebook/notebookapp.py", line 1379, in init_webapp
    self.jinja_environment_options,
  File "/usr/local/lib/python3.7/dist-packages/notebook/notebookapp.py", line 158, in __init__
    default_url, settings_overrides, jinja_env_options)
  File "/usr/local/lib/python3.7/dist-packages/notebook/notebookapp.py", line 270, in init_settings
    nbextensions_path=jupyter_app.nbextensions_path,
  File "/usr/local/lib/python3.7/dist-packages/notebook/notebookapp.py", line 1066, in nbextensions_path
    from IPython.paths import get_ipython_dir
  File "/usr/local/lib/python3.7/dist-packages/IPython/__init__.py", line 54, in <module>
    from .core.application import Application
  File "/usr/local/lib/python3.7/dist-packages/IPython/core/application.py", line 25, in <module>
    from IPython.core import release, crashhandler
  File "/usr/local/lib/python3.7/dist-packages/IPython/core/crashhandler.py", line 27, in <module>
    from IPython.core import ultratb
  File "/usr/local/lib/python3.7/dist-packages/IPython/core/ultratb.py", line 119, in <module>
    from IPython.utils import path as util_path
  File "/usr/local/lib/python3.7/dist-packages/IPython/utils/path.py", line 17, in <module>
    from IPython.utils.process import system
  File "/usr/local/lib/python3.7/dist-packages/IPython/utils/process.py", line 19, in <module>
    from ._process_posix import system, getoutput, arg_split, check_pid
  File "/usr/local/lib/python3.7/dist-packages/IPython/utils/_process_posix.py", line 23, in <module>
    import pexpect
  File "/usr/lib/python3/dist-packages/pexpect/__init__.py", line 75, in <module>
    from .pty_spawn import spawn, spawnu
  File "/usr/lib/python3/dist-packages/pexpect/pty_spawn.py", line 15, in <module>
    from .spawnbase import SpawnBase
  File "/usr/lib/python3/dist-packages/pexpect/spawnbase.py", line 218
    def expect(self, pattern, timeout=-1, searchwindowsize=-1, async=False):
                                                                   ^
SyntaxError: invalid syntax

Eu instalei python3.7-distutils(que parece apresentar pexpect) e reinstalei o Jupyter usando pip3, mas ainda vejo esse erro. Também desinstalei e reinstalei os seguintes pacotes:

python3.7 python3.7-dev python3.7-distutils python3.7-tk

O que deveria ser feito?

Vejo referência a esta correção , mas, supondo que seja uma correção, não sei como colocá-la em funcionamento nesta instalação 16.04 LTS.

EDIT: Ao importar pexpectno Python 3.7, recebo o mesmo tipo de coisa:

>>> import pexpect
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python3/dist-packages/pexpect/__init__.py", line 75, in <module>
    from .pty_spawn import spawn, spawnu
  File "/usr/lib/python3/dist-packages/pexpect/pty_spawn.py", line 15, in <module>
    from .spawnbase import SpawnBase
  File "/usr/lib/python3/dist-packages/pexpect/spawnbase.py", line 218
    def expect(self, pattern, timeout=-1, searchwindowsize=-1, async=False):
                                                                   ^
SyntaxError: invalid syntax
python3 16.04 jupyter

5 respostas

  1. Para mim, estava em conflito com o apt-get python3 instalado, então tive que desinstalá-lo primeiro:

    sudo apt-get remove python-pexpect python3-pexpect

    E depois

    sudo pip3.7 install --upgrade pexpect

    • 11

  2. Baixe o código-fonte do pexpect4.6 em https://github.com/pexpect/pexpect/releases/tag/4.6

    Extraia o código fonte, entre na pasta e instale o pexpect:

    sudo python3.7 setup.py install

    Isso deve resolver seu problema. :)

    • 1

  3. Eu tive o mesmo problema e as etapas a seguir funcionaram para mim.

    Eu fui para /usrlib/python3/dist-packages/pexpect/ e lá eu

    • renomeado async.py para _async.py
    • abriu spawn.py e fez estas substituições: 
      'async=' -> 'async_='
'async:'-> 'async_:'
'.async' -> '._async'

    Espero que ajude alguém também.

    • 1

  4. Eu estava recebendo o mesmo erro. Eu tentei:

    python3.7 -c 'import pexpect'

    E eu consegui:

    Traceback (most recent call last):   File "<string>", line 1, in <module>   File "/usr/lib/python3/dist-packages/pexpect/__init__.py", line 75, in <module>
    from .pty_spawn import spawn, spawnu   File "/usr/lib/python3/dist-packages/pexpect/pty_spawn.py", line 14, in <module>
    from .spawnbase import SpawnBase   File "/usr/lib/python3/dist-packages/pexpect/spawnbase.py", line 224
    def expect(self, pattern, timeout=-1, searchwindowsize=-1, async=False):
                                                                   ^ SyntaxError: invalid syntax Error in sys.excepthook: Traceback (most recent call last):   File "/usr/lib/python3/dist-packages/apport_python_hook.py", line 63, in apport_excepthook
    from apport.fileutils import likely_packaged, get_recent_crashes   File "/usr/lib/python3/dist-packages/apport/__init__.py", line 5, in <module>
    from apport.report import Report   File "/usr/lib/python3/dist-packages/apport/report.py", line 30, in <module>
    import apport.fileutils   File "/usr/lib/python3/dist-packages/apport/fileutils.py", line 23, in <module>
    from apport.packaging_impl import impl as packaging   File "/usr/lib/python3/dist-packages/apport/packaging_impl.py", line 24, in <module>
    import apt   File "/usr/lib/python3/dist-packages/apt/__init__.py", line 23, in <module>
    import apt_pkg ModuleNotFoundError: No module named 'apt_pkg'

Original exception was: Traceback (most recent call last):   File "<string>", line 1, in <module>   File "/usr/lib/python3/dist-packages/pexpect/__init__.py", line 75, in <module>
    from .pty_spawn import spawn, spawnu   File "/usr/lib/python3/dist-packages/pexpect/pty_spawn.py", line 14, in <module>
    from .spawnbase import SpawnBase   File "/usr/lib/python3/dist-packages/pexpect/spawnbase.py", line 224
    def expect(self, pattern, timeout=-1, searchwindowsize=-1, async=False):
                                                                   ^ 
SyntaxError: invalid syntax

    Depois disso tentei:

    pip3 install pexpect

    Agora o jupyter funciona muito bem.

    • 0
  5. Best Answer

    Eu enfrentei esse problema enquanto executava testes de Django. Atualize a versão para a mais recente no momento (4.8), corrigiu o problema.

    • 0

relate perguntas