Novice about PyQt environment?

which of the following two lines of commands are installed? Do you need to install both of these in the Qt environment, or just one of them?
Qt novice, recently watching the installation of the Qt environment, a little confused:

pip3 install PyQt5
Mar.20,2021

just one of them will be fine.
apt-get is the version of the deb repository
pip is the
of the pipy repository. It is recommended that you use venv, so as not to affect the host (meaning py environment with linux, perhaps a misnomer) environment.


the first is the pyqt package installed with ubuntu's package manager, and the second is pyqt installed with python's package manager (pip)

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