Cannot install and upgrade python packages on Ubuntu 14.04
11717
Error in pip: unsupported operand type(s) for -=: 'Retry' and 'int'
118978
Not all updates can be installed: partial upgrade
88582
Install Numpy for Python3.4.0 on Ubuntu 14.04.01 LTS
43579
I cannot install new packages: "Could not get lock /var/lib/dpkg/lock"
140793
Problem installing a package
12379
How do I install Python 3.6 using apt-get?
8727
What is the best way to install Python packages?
3523
What does "Package  has no installation candidate" mean?
1632
How do I fix a "Failed to download package files" error?
112955
How can I upgrade Ubuntu from 19.10 to 20.04 without losing packages?
36848
How do I safely install an older/newer version of Python?
5774
How to install the latest versions of NodeJS and NPM?
36079
How to install pip for Python 3.6 on Ubuntu 16.10?
56150
Can't upgrade/update ubuntu 18.04 as apt/dpkg error is showing up
32426
How to install packages?
10381
ModuleNotFoundError: No module named 'apt_pkg' error
149984
Can't update or install anything. Ubuntu 3.11.0.14