[Qgis-user] Couldn't load SIP, Python support disabled

[Ahmed Shubbar]

I recently installed Qgis on Fedora 30. But did not get python support
working and can see only 8 plugins available. I also tried installing newer
Qgis 3.6.3-Noosa, but got the same errors.

QGIS version: 3.4.6
OS: Fedora 30

============
### Python Error 1:

Couldn't load SIP module.
Python support will be disabled.

Traceback (most recent call last):
  File "", line 1, in
  File "/usr/lib64/python3.7/site-packages/qgis/__init__.py", line 72, in
    from qgis.PyQt import QtCore
  File "/usr/lib64/python3.7/site-packages/qgis/PyQt/QtCore.py", line 26,
in
    from PyQt5.QtCore import *
ImportError: /lib64/libQt5Core.so.5: version `Qt_5_PRIVATE_API' not found
(required by /home/ahmed/.local/lib/python3.7/site-packages/PyQt5/QtCore.so)

Python version:
3.7.3 (default, May 11 2019, 00:38:04)
[GCC 9.1.1 20190503 (Red Hat 9.1.1-1)]

QGIS version:
3.4.6-Madeira 'Madeira', exported

Python path:
['/usr/share/qgis/python',
'/home/ahmed/.local/share/QGIS/QGIS3/profiles/default/python',
'/home/ahmed/.local/share/QGIS/QGIS3/profiles/default/python/plugins',
'/usr/share/qgis/python/plugins', '/usr/lib64/python37.zip',
'/usr/lib64/python3.7', '/usr/lib64/python3.7/lib-dynload',
'/home/ahmed/.local/lib/python3.7/site-packages',
'/usr/local/lib64/python3.7/site-packages',
'/usr/local/lib/python3.7/site-packages',
'/usr/lib64/python3.7/site-packages', '/usr/lib/python3.7/site-packages']

============
### Python Error 2:

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:
3.7.3 (default, May 11 2019, 00:38:04)
[GCC 9.1.1 20190503 (Red Hat 9.1.1-1)]

QGIS version:
3.4.6-Madeira 'Madeira', exported

Python path:
['/usr/share/qgis/python',
'/home/ahmed/.local/share/QGIS/QGIS3/profiles/default/python',
'/home/ahmed/.local/share/QGIS/QGIS3/profiles/default/python/plugins',
'/usr/share/qgis/python/plugins', '/usr/lib64/python37.zip',
'/usr/lib64/python3.7', '/usr/lib64/python3.7/lib-dynload',
'/home/ahmed/.local/lib/python3.7/site-packages',
'/usr/local/lib64/python3.7/site-packages',
'/usr/local/lib/python3.7/site-packages',
'/usr/lib64/python3.7/site-packages', '/usr/lib/python3.7/site-packages']

============
### Python Error 3 (on closing QGIS):

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:
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