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kazam 失败并显示“PyGIWarning：导入 Gtk 时未先指定版本...”

tag-icon • tag-icon python3 pygtk kazam
kazam 失败并显示“PyGIWarning：导入 Gtk 时未先指定版本...”

安装 kazam 屏幕投射软件后，它无法启动。

我正在使用 Ubuntu 17.04。

更新： 在此处输入图片描述

    /usr/bin/kazam:32: PyGIWarning: Gtk was imported without specifying a version first. Use gi.require_version('Gtk', '3.0') before import to ensure that the right version gets loaded.
  from gi.repository import Gtk
/usr/lib/python3/dist-packages/kazam/frontend/window_area.py:30: PyGIWarning: Wnck was imported without specifying a version first. Use gi.require_version('Wnck', '3.0') before import to ensure that the right version gets loaded.
  from gi.repository import Gtk, GObject, Gdk, Wnck, GdkX11
/usr/lib/python3/dist-packages/kazam/backend/gstreamer.py:35: PyGIWarning: Gst was imported without specifying a version first. Use gi.require_version('Gst', '1.0') before import to ensure that the right version gets loaded.
  from gi.repository import GObject, Gst
/usr/lib/python3/dist-packages/kazam/frontend/indicator.py:148: PyGIWarning: AppIndicator3 was imported without specifying a version first. Use gi.require_version('AppIndicator3', '0.1') before import to ensure that the right version gets loaded.
  from gi.repository import AppIndicator3
/usr/lib/python3/dist-packages/kazam/frontend/indicator.py:97: PyGIWarning: Keybinder was imported without specifying a version first. Use gi.require_version('Keybinder', '3.0') before import to ensure that the right version gets loaded.
  from gi.repository import Keybinder
Segmentation fault (core dumped)

答案1

只需安装即可python3-xlib解决 Kazam 的特定分段错误问题，但您可能注意到仍然有几个关于导入“未先指定版本”的 PyGI 警告。

由于这个问题是谷歌关于此类警告的第一名（这就是我在这里偶然发现的），这就是如何更改代码以防止此类警告，正如警告本身所述。

代替：

from gi.repository import Gtk, GObject, Gdk, Wnck, GdkX11, Gst, AppIndicator3

这会发出几个警告：

__main__:1: PyGIWarning: Gtk was imported without specifying a version first. Use gi.require_version('Gtk', '3.0') before import to ensure that the right version gets loaded.
__main__:1: PyGIWarning: Wnck was imported without specifying a version first. Use gi.require_version('Wnck', '3.0') before import to ensure that the right version gets loaded.
__main__:1: PyGIWarning: Gst was imported without specifying a version first. Use gi.require_version('Gst', '1.0') before import to ensure that the right version gets loaded.
__main__:1: PyGIWarning: AppIndicator3 was imported without specifying a version first. Use gi.require_version('AppIndicator3', '0.1') before import to ensure that the right version gets loaded.

使用这个，根据官方PyGOobject 文档：

import gi
gi.require_version('Gtk', '3.0')
gi.require_version('Wnck', '3.0')
gi.require_version('Gst', '1.0')
gi.require_version('AppIndicator3', '0.1')
from gi.repository import Gtk, GObject, Gdk, Wnck, GdkX11, Gst, AppIndicator3

显然，并非所有的gi子模块都需要指定版本。

或者，您也可以使用以下语句在一条语句中要求所有版本require_versions()函数（注意是复数），它采用单个模块词典及其各自的版本：

import gi
gi.require_versions({
    'Gtk':  '3.0',
    'Wnck': '3.0',
    'Gst':  '1.0',
    'AppIndicator3': '0.1',
})
from gi.repository import Gtk, GObject, Gdk, Wnck, GdkX11, Gst, AppIndicator3

此功能未在官方文档中列出，但它是在PyGObject 3.21.0于 2016 年发布。

答案2

此段错误的问题出在 Kazam 热键绑定中。也许系统无法将某些键绑定提供给 Kazam，因此我们得到了异常。

粗略的解决方案是删除 Kazam 的全局键绑定：

  1. 打开文件：
    /usr/lib/python3/dist-packages/kazam/frontend/indicator.py

  2. 找到这些字符串（大约第 100 行左右）：

    Keybinder.bind("<Super><Ctrl>R", self.cb_hotkeys, "start-request")
Keybinder.bind("<Super><Ctrl>F", self.cb_hotkeys, "stop-request")
Keybinder.bind("<Super><Ctrl>P", self.cb_hotkeys, "pause-request")
Keybinder.bind("<Super><Ctrl>W", self.cb_hotkeys, "show-request")
Keybinder.bind("<Super><Ctrl>Q", self.cb_hotkeys, "quit-request")

  3. 将其注释掉：

    #Keybinder.bind("<Super><Ctrl>R", self.cb_hotkeys, "start-request")
#Keybinder.bind("<Super><Ctrl>F", self.cb_hotkeys, "stop-request")
#Keybinder.bind("<Super><Ctrl>P", self.cb_hotkeys, "pause-request")
#Keybinder.bind("<Super><Ctrl>W", self.cb_hotkeys, "show-request")
#Keybinder.bind("<Super><Ctrl>Q", self.cb_hotkeys, "quit-request")

  4. 保存文件。

  5. 运行 Kazam。

  6. 你真棒。

此后，您将无法使用这些热键，但至少 Kazam 可以工作。

答案3

已解决：我只需要安装 python3-xlib：

sudo apt-get update
sudo apt-get install python3-xlib

答案4

您可以简单地使用：

pip install --upgrade --force-reinstall kazam

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