I just installed igraph using pip3 install igraph-python and the command ran to completion successfully
When I open a python REPL and type
import igraph.test as directed on https://igraph.org/python/doc/tutorial/install.html#installing-igraph I get the message
ModuleNotFoundError: No module named ‘igraph.test’
I should add that I am running python 3.8 under mojave.
Have I omitted some step, or is the doc page outdated?