import os import sys from pyosys import libyosys as ys print(ys) ys.log("Hello, world!\n") from pyosys.libyosys import log print(log) log("Goodbye, world!\n") import pyosys if os.path.basename(sys.executable) == "yosys": # make sure it's not importing the directory assert "built-in" in repr(pyosys)