I have created a python environment and have installed pgdmin4 using pip3.
I get the message that pgadmin4 for was successfully installed, but I cannot run it as I don't know where it is installed. In project directory I created ./pgadmin4 there are only two files: Pipfile Pipfile.lock, while in the $ user directory there are .local/bin lib64 and share sub-directories. Descending in them they seem to me to be files for the environment.
Excuse me for my ignorance, I don't know much about python. I had to use it only because there is no readily available distribution of pgadmin4 for Slackware.