python - Spyder 5.0.1 加载失败

Question

启动 Spyder 时，它显示加载屏幕，但最终它停止了，我收到以下错误消息。有什么想法吗？

No QCoreApplication instance found. Application patches not applied. You have to call load_stylesheet function after instantiation of QApplication to take effect. 
Traceback (most recent call last):
  File "/home/hagymasbab/.local/lib/python3.9/site-packages/spyder/app/mainwindow.py", line 2161, in create_window
    main.setup()
  File "/home/hagymasbab/.local/lib/python3.9/site-packages/spyder/app/mainwindow.py", line 903, in setup
    plugin_instance = plugin_class(self, configuration=CONF)
  File "/home/hagymasbab/.local/lib/python3.9/site-packages/spyder/api/plugins.py", line 1405, in __init__
    super().__init__(parent, configuration=configuration)
  File "/home/hagymasbab/.local/lib/python3.9/site-packages/spyder/api/plugins.py", line 826, in __init__
    self._container = container = self.CONTAINER_CLASS(
  File "/home/hagymasbab/.local/lib/python3.9/site-packages/spyder/plugins/console/widgets/main_widget.py", line 122, in __init__
    self.shell = InternalShell(  # TODO: Move to use SpyderWidgetMixin?
  File "/home/hagymasbab/.local/lib/python3.9/site-packages/spyder/plugins/console/widgets/internalshell.py", line 153, in __init__
    super().__init__(parent, get_conf_path('history_internal.py'),
  File "/home/hagymasbab/.local/lib/python3.9/site-packages/spyder/plugins/console/widgets/shell.py", line 665, in __init__
    ShellBaseWidget.__init__(self, parent, history_filename,
  File "/home/hagymasbab/.local/lib/python3.9/site-packages/spyder/plugins/console/widgets/shell.py", line 75, in __init__
    self.history = self.load_history()
  File "/home/hagymasbab/.local/lib/python3.9/site-packages/spyder/plugins/console/widgets/shell.py", line 503, in load_history
    if rawhistory[1] != self.INITHISTORY[1]:
IndexError: list index out of range

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/hagymasbab/.local/bin/spyder", line 8, in <module>
    sys.exit(main())
  File "/home/hagymasbab/.local/lib/python3.9/site-packages/spyder/app/start.py", line 213, in main
    mainwindow.main(options, args)
  File "/home/hagymasbab/.local/lib/python3.9/site-packages/spyder/app/mainwindow.py", line 2311, in main
    mainwindow = create_window(app, splash, options, args)
  File "/home/hagymasbab/.local/lib/python3.9/site-packages/spyder/app/mainwindow.py", line 2163, in create_window
    if main.console is not None:
  File "/home/hagymasbab/.local/lib/python3.9/site-packages/spyder/app/mainwindow.py", line 1180, in __getattr__
    return self.get_plugin(self._INTERNAL_PLUGINS_MAPPING[attr])
  File "/home/hagymasbab/.local/lib/python3.9/site-packages/spyder/app/mainwindow.py", line 169, in get_plugin
    raise SpyderAPIError(
spyder.api.exceptions.SpyderAPIError: Plugin "internal_console" not found!

版本:Spyder:5.0.1，pyqt5:5.12.3

请注意，这不是最新版本的 pyqt5。但是，如果我将它升级到 5.15.4，Spyder 甚至不会开始加载，它会因此而死:

Traceback (most recent call last):
  File "/usr/local/lib/python3.9/dist-packages/qtpy/QtWebEngineWidgets.py", line 22, in <module>
    from PyQt5.QtWebEngineWidgets import QWebEnginePage
ImportError: libQt5QuickWidgets.so.5: cannot open shared object file: No such file or directory

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/hagymasbab/.local/bin/spyder", line 8, in <module>
    sys.exit(main())
  File "/home/hagymasbab/.local/lib/python3.9/site-packages/spyder/app/start.py", line 209, in main
    from spyder.app import mainwindow
  File "/home/hagymasbab/.local/lib/python3.9/site-packages/spyder/app/mainwindow.py", line 60, in <module>
    from qtpy import QtWebEngineWidgets  # analysis:ignore
  File "/usr/local/lib/python3.9/dist-packages/qtpy/QtWebEngineWidgets.py", line 26, in <module>
    from PyQt5.QtWebKitWidgets import QWebPage as QWebEnginePage
ModuleNotFoundError: No module named 'PyQt5.QtWebKitWidgets'

我使用的是最新版本的 qtpy (1.9.0)。

编辑:这是 ldd 命令的输出:

linux-vdso.so.1 (0x00007ffd139c9000)
libQt5Quick.so.5 => /home/hagymasbab/.local/lib/python3.9/site-packages/PyQt5/Qt5/lib/libQt5Quick.so.5 (0x00007f72ed4b6000)
libQt5QmlModels.so.5 => /home/hagymasbab/.local/lib/python3.9/site-packages/PyQt5/Qt5/lib/libQt5QmlModels.so.5 (0x00007f72ed236000)
libQt5Qml.so.5 => /home/hagymasbab/.local/lib/python3.9/site-packages/PyQt5/Qt5/lib/libQt5Qml.so.5 (0x00007f72ecbba000)
libQt5Widgets.so.5 => /home/hagymasbab/.local/lib/python3.9/site-packages/PyQt5/Qt5/lib/libQt5Widgets.so.5 (0x00007f72ec358000)
libQt5Gui.so.5 => /home/hagymasbab/.local/lib/python3.9/site-packages/PyQt5/Qt5/lib/libQt5Gui.so.5 (0x00007f72eba27000)
libQt5Network.so.5 => /home/hagymasbab/.local/lib/python3.9/site-packages/PyQt5/Qt5/lib/libQt5Network.so.5 (0x00007f72eb677000)
libQt5Core.so.5 => /home/hagymasbab/.local/lib/python3.9/site-packages/PyQt5/Qt5/lib/libQt5Core.so.5 (0x00007f72eae81000)
libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f72eae36000)
libGL.so.1 => /usr/lib/x86_64-linux-gnu/libGL.so.1 (0x00007f72eadaf000)
libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f72eabe2000)
libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f72eaa9e000)
libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f72eaa82000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f72ea8bd000)
librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f72ea8b2000)
libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f72ea895000)
libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f72ea88f000)
libgssapi_krb5.so.2 => /usr/lib/x86_64-linux-gnu/libgssapi_krb5.so.2 (0x00007f72ea83a000)
libicui18n.so.56 => /home/hagymasbab/.local/lib/python3.9/site-packages/PyQt5/Qt5/lib/libicui18n.so.56 (0x00007f72ea3a1000)
libicuuc.so.56 => /home/hagymasbab/.local/lib/python3.9/site-packages/PyQt5/Qt5/lib/libicuuc.so.56 (0x00007f72e9fe9000)
libicudata.so.56 => /home/hagymasbab/.local/lib/python3.9/site-packages/PyQt5/Qt5/lib/libicudata.so.56 (0x00007f72e8606000)
libgthread-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libgthread-2.0.so.0 (0x00007f72e8601000)
libglib-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 (0x00007f72e84d0000)
/lib64/ld-linux-x86-64.so.2 (0x00007f72ede01000)
libGLdispatch.so.0 => /usr/lib/x86_64-linux-gnu/libGLdispatch.so.0 (0x00007f72e8418000)
libGLX.so.0 => /usr/lib/x86_64-linux-gnu/libGLX.so.0 (0x00007f72e83e4000)
libkrb5.so.3 => /usr/lib/x86_64-linux-gnu/libkrb5.so.3 (0x00007f72e830a000)
libk5crypto.so.3 => /usr/lib/x86_64-linux-gnu/libk5crypto.so.3 (0x00007f72e82da000)
libcom_err.so.2 => /lib/x86_64-linux-gnu/libcom_err.so.2 (0x00007f72e82d4000)
libkrb5support.so.0 => /usr/lib/x86_64-linux-gnu/libkrb5support.so.0 (0x00007f72e82c3000)
libpcre.so.3 => /lib/x86_64-linux-gnu/libpcre.so.3 (0x00007f72e8250000)
libX11.so.6 => /usr/lib/x86_64-linux-gnu/libX11.so.6 (0x00007f72e810d000)
libkeyutils.so.1 => /lib/x86_64-linux-gnu/libkeyutils.so.1 (0x00007f72e8106000)
libresolv.so.2 => /lib/x86_64-linux-gnu/libresolv.so.2 (0x00007f72e80ec000)
libxcb.so.1 => /usr/lib/x86_64-linux-gnu/libxcb.so.1 (0x00007f72e80bf000)
libXau.so.6 => /usr/lib/x86_64-linux-gnu/libXau.so.6 (0x00007f72e80ba000)
libXdmcp.so.6 => /usr/lib/x86_64-linux-gnu/libXdmcp.so.6 (0x00007f72e7eb4000)
libbsd.so.0 => /usr/lib/x86_64-linux-gnu/libbsd.so.0 (0x00007f72e7e9d000)
libmd.so.0 => /usr/lib/x86_64-linux-gnu/libmd.so.0 (0x00007f72e7e90000)

Answer 1

问题解决了!发布后

spyder --reset

它再次完美加载。仍然不知道，为什么...