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Roshin Raphel's questions

Martin Hope
Roshin Raphel
Asked: 2020-09-17 21:28:12 +0800 CST
  • 1

运行ps命令时，输出如下：

  PID TTY          TIME CMD
  494 pts/0    00:00:00 ps
29487 pts/0    00:00:00 bash
32617 pts/0    00:00:02 gedit

为什么是TIME 00:00:00for bash？根据GeeksforGeeks的说法，解释如下：

它只是任何进程的总累积 CPU 使用时间，00:00:00 表示到目前为止内核还没有提供 CPU 时间。在上面的例子中，我们发现，对于 bash，没有给出 CPU 时间。

有人有更好的解释吗？

command-line bash ps
Martin Hope
Roshin Raphel
Asked: 2020-09-07 10:03:23 +0800 CST
  • 1

我Openshot在 Ubuntu 18.04 LTS 中安装了

sudo apt-get install openshot-qt

当我尝试openshot-qt在终端中打开它时，它会失败并出现错误：

Traceback (most recent call last):
  File "/usr/bin/openshot-qt", line 11, in <module>
    load_entry_point('openshot-qt==2.5.1.dev2', 'gui_scripts', 'openshot-qt')()
  File "/usr/lib/python3/dist-packages/openshot_qt/launch.py", line 97, in main
    app = OpenShotApp(argv)
  File "/usr/lib/python3/dist-packages/openshot_qt/classes/app.py", line 220, in __init__
    from windows.main_window import MainWindow
  File "/usr/lib/python3/dist-packages/openshot_qt/windows/main_window.py", line 45, in <module>
    from windows.views.timeline_webview import TimelineWebView
  File "/usr/lib/python3/dist-packages/openshot_qt/windows/views/timeline_webview.py", line 42, in <module>
    from PyQt5.QtWebKitWidgets import QWebView
ModuleNotFoundError: No module named 'PyQt5.QtWebKitWidgets'

sudo apt-get install python3-pyqt5.qtwebengine我根据这个问题试过了。但是打开 openshot 会出现同样的错误，尽管 about 命令会给出：

Reading package lists... Done
Building dependency tree       
Reading state information... Done
python3-pyqt5.qtwebengine is already the newest version (5.10.1+dfsg-1ubuntu2).
0 upgraded, 0 newly installed, 0 to remove and 50 not upgraded.

有人可以提供解决方案吗？

编辑：

输出apt-cache policy python3-pyqt5.qtwebkit：

python3-pyqt5.qtwebkit:
  Installed: 5.10.1+dfsg-1ubuntu2
  Candidate: 5.10.1+dfsg-1ubuntu2
  Version table:
 *** 5.10.1+dfsg-1ubuntu2 500
        500 http://archive.ubuntu.com/ubuntu bionic/universe amd64 Packages
        100 /var/lib/dpkg/status

输出ls -l /usr/lib/python3/dist-packages/PyQt5/：

-rw-r--r-- 1 root root     826 Feb 27  2018 __init__.py
drwxr-xr-x 2 root root    4096 Sep 15  2019 __pycache__
-rw-r--r-- 1 root root  237384 Apr 23  2018 _QOpenGLFunctions_2_0.cpython-36m-x86_64-linux-gnu.so
-rw-r--r-- 1 root root  241624 Apr 23  2018 _QOpenGLFunctions_2_1.cpython-36m-x86_64-linux-gnu.so
-rw-r--r-- 1 root root  122296 Apr 23  2018 _QOpenGLFunctions_4_1_Core.cpython-36m-x86_64-linux-gnu.so
-rw-r--r-- 1 root root 2955992 Apr 23  2018 QtCore.cpython-36m-x86_64-linux-gnu.so
-rw-r--r-- 1 root root  370919 Apr 23  2018 QtCore.pyi
-rw-r--r-- 1 root root    6120 Apr 23  2018 Qt.cpython-36m-x86_64-linux-gnu.so
-rw-r--r-- 1 root root  212696 Apr 23  2018 QtDBus.cpython-36m-x86_64-linux-gnu.so
-rw-r--r-- 1 root root   22776 Apr 23  2018 QtDBus.pyi
-rw-r--r-- 1 root root  332392 Apr 23  2018 QtDesigner.cpython-36m-x86_64-linux-gnu.so
-rw-r--r-- 1 root root   22328 Apr 23  2018 QtDesigner.pyi
-rw-r--r-- 1 root root 3287320 Apr 23  2018 QtGui.cpython-36m-x86_64-linux-gnu.so
-rw-r--r-- 1 root root  382629 Apr 23  2018 QtGui.pyi
-rw-r--r-- 1 root root  157560 Apr 23  2018 QtHelp.cpython-36m-x86_64-linux-gnu.so
-rw-r--r-- 1 root root    9226 Apr 23  2018 QtHelp.pyi
-rw-r--r-- 1 root root  698304 Apr 23  2018 QtMultimedia.cpython-36m-x86_64-linux-gnu.so
-rw-r--r-- 1 root root   83508 Apr 23  2018 QtMultimedia.pyi
-rw-r--r-- 1 root root  102848 Apr 23  2018 QtMultimediaWidgets.cpython-36m-x86_64-linux-gnu.so
-rw-r--r-- 1 root root    4571 Apr 23  2018 QtMultimediaWidgets.pyi
-rw-r--r-- 1 root root  859448 Apr 23  2018 QtNetwork.cpython-36m-x86_64-linux-gnu.so
-rw-r--r-- 1 root root   94874 Apr 23  2018 QtNetwork.pyi
-rw-r--r-- 1 root root  143192 Apr 23  2018 QtOpenGL.cpython-36m-x86_64-linux-gnu.so
-rw-r--r-- 1 root root   15653 Apr 23  2018 QtOpenGL.pyi
-rw-r--r-- 1 root root  239720 Apr 23  2018 QtPrintSupport.cpython-36m-x86_64-linux-gnu.so
-rw-r--r-- 1 root root   19835 Apr 23  2018 QtPrintSupport.pyi
-rw-r--r-- 1 root root  104528 Apr 23  2018 QtSvg.cpython-36m-x86_64-linux-gnu.so
-rw-r--r-- 1 root root    5909 Apr 23  2018 QtSvg.pyi
-rw-r--r-- 1 root root  103104 Apr 23  2018 QtTest.cpython-36m-x86_64-linux-gnu.so
-rw-r--r-- 1 root root   10827 Apr 23  2018 QtTest.pyi
-rw-r--r-- 1 root root   33920 Apr 23  2018 QtWebChannel.cpython-36m-x86_64-linux-gnu.so
-rw-r--r-- 1 root root    2480 Apr 23  2018 QtWebChannel.pyi
-rw-r--r-- 1 root root   67992 Apr 23  2018 QtWebEngineCore.cpython-36m-x86_64-linux-gnu.so
-rw-r--r-- 1 root root    7141 Apr 23  2018 QtWebEngineCore.pyi
-rw-r--r-- 1 root root   54304 Apr 23  2018 QtWebEngine.cpython-36m-x86_64-linux-gnu.so
-rw-r--r-- 1 root root    6582 Apr 23  2018 QtWebEngine.pyi
-rw-r--r-- 1 root root  239800 Apr 23  2018 QtWebEngineWidgets.cpython-36m-x86_64-linux-gnu.so
-rw-r--r-- 1 root root   32973 Apr 23  2018 QtWebEngineWidgets.pyi
-rw-r--r-- 1 root root  170264 Apr 23  2018 QtWebKit.cpython-36m-x86_64-linux-gnu.so
-rw-r--r-- 1 root root   18340 Apr 23  2018 QtWebKit.pyi
-rw-r--r-- 1 root root  317720 Apr 23  2018 QtWebKitWidgets.cpython-36m-x86_64-linux-gnu.so
-rw-r--r-- 1 root root   32123 Apr 23  2018 QtWebKitWidgets.pyi
-rw-r--r-- 1 root root 5498280 Apr 23  2018 QtWidgets.cpython-36m-x86_64-linux-gnu.so
-rw-r--r-- 1 root root  500483 Apr 23  2018 QtWidgets.pyi
-rw-r--r-- 1 root root  315744 Apr 23  2018 QtXml.cpython-36m-x86_64-linux-gnu.so
-rw-r--r-- 1 root root   27507 Apr 23  2018 QtXml.pyi
drwxr-xr-x 7 root root    4096 Sep 15  2019 uic

输出python3 -c "import PyQt5.QtWebKitWidgets"：

Traceback (most recent call last):
  File "<string>", line 1, in <module>
ModuleNotFoundError: No module named 'PyQt5.QtWebKitWidgets'
apt openshot pyqt5