ModuleNotFoundError: No module n

今天 在fedora上安装redis 突然提示

Traceback (most recent call last):
  File "/usr/bin/dnf", line 57, in <module>
    from dnf.cli import main
  File "/usr/lib/python3.6/site-packages/dnf/__init__.py", line 31, in <module>
    import dnf.base
  File "/usr/lib/python3.6/site-packages/dnf/base.py", line 26, in <module>
    from  import CompsQuery
  File "/usr/lib/python3.6/site-packages/dnf/comps.py", line 29, in <module>
    import dnf.util
  File "/usr/lib/python3.6/site-packages/dnf/util.py", line 32, in <module>
    import librepo
ModuleNotFoundError: No module named 'librepo'

rpm -ivh librepo-1.8.1-7.fc28.x86_64.rpm
rpm -ivh python3-librepo-1.8.1-7.fc28.x86_64.rpm

echo 'import sys;sys.path += ["/usr/lib64/python3.6/site-packages/", "/usr/lib64/python3.6/"]' | sudo tee /usr/lib/python3.6/site-packages/lib64.pth

参考