Ubuntu18.04:无法加载SIP模块qgis

Question

我试图在Ubuntu18.4上安装QGIS，因此我添加了这个回购程序：

sudo add-apt-repository ppa:ubuntugis/ubuntugis-unstable
sudo apt-get update

最后更新了我的源代码，并安装了QGis：

sudo apt update
sudo apt install qgis

但是，在运行应用程序时，我得到了以下错误：

groot@groot-Product:~$ qgis
"Couldn't load SIP module.
Python support will be disabled.

Traceback (most recent call last):
  File \"\", line 1, in 
  File \"/usr/lib/python3/dist-packages/qgis/__init__.py\", line 72, in 
    from qgis.PyQt import QtCore
  File \"/usr/lib/python3/dist-packages/qgis/PyQt/QtCore.py\", line 26, in 
    from PyQt5.QtCore import *
ImportError: /usr/lib/x86_64-linux-gnu/libQt5Core.so.5: version `Qt_5.12' not found (required by /home/groot/.local/lib/python3.6/site-packages/PyQt5/QtCore.so)

Python version:
3.6.7 (default, Oct 22 2018, 11:32:17) 
[GCC 8.2.0]

QGIS version:
3.4.6-Madeira 'Madeira', exported

Python path:
['/usr/share/qgis/python', '/home/groot/.local/share/QGIS/QGIS3/profiles/default/python', '/home/groot/.local/share/QGIS/QGIS3/profiles/default/python/plugins', '/usr/share/qgis/python/plugins', '/usr/lib/python36.zip', '/usr/lib/python3.6', '/usr/lib/python3.6/lib-dynload', '/home/groot/.local/lib/python3.6/site-packages', '/usr/local/lib/python3.6/dist-packages', '/usr/lib/python3/dist-packages']"
"An error occurred during execution of following code:
qgis.utils.uninstallErrorHook()

Traceback (most recent call last):
  File \"\", line 1, in 
NameError: name 'qgis' is not defined

Python version:
3.6.7 (default, Oct 22 2018, 11:32:17) 
[GCC 8.2.0]

QGIS version:
3.4.6-Madeira 'Madeira', exported

Python path:
['/usr/share/qgis/python', '/home/groot/.local/share/QGIS/QGIS3/profiles/default/python', '/home/groot/.local/share/QGIS/QGIS3/profiles/default/python/plugins', '/usr/share/qgis/python/plugins', '/usr/lib/python36.zip', '/usr/lib/python3.6', '/usr/lib/python3.6/lib-dynload', '/home/groot/.local/lib/python3.6/site-packages', '/usr/local/lib/python3.6/dist-packages', '/usr/lib/python3/dist-packages']"

退出应用程序后，我得到以下错误：

"An error occurred during execution of following code:
qgis.utils.uninstallErrorHook()

SystemError: PyEval_EvalCodeEx: NULL globals

Python version:


QGIS version:
3.4.6-Madeira 'Madeira', exported

Python path:
"
groot@groot-Product:~$ 

Answer 1

我找到了解决我的问题的办法，所以我对陷入困境的人回答了我的问题：

根据堆栈溢出上的此页：

PyQt中的PyPI与已安装的Qt不兼容。

因此，我使用pyqt5删除了pip3：

pip3 uninstall PyQt5

并从apt安装了PyQt5：

sudo apt-get install python3-pyqt5

现在，Qgis似乎工作正常。

Answer 2

在Manjaro / ArchLinux为我工作。

我注意到在sudo qgis中没有这个错误，但是这不是一个好的解决方案，因为我想使用我的主目录，而不是根目录。提示权限和路径被关闭了。

pip uninstall PyQt5 # defaults to pip3
sudo pacman -S python-pyqt5 python-pyqt5-sip

现在，QGIS成功地发布了python。