Interop comes in many flavors. If I were to consider Julia a replacement for Python, I'd need to know that Julia can interop seamlessly with it, like Kotlin can with Java.
How do you feel about the user experience for Julia/Python interop?
I can only tell you that I consider it excellent and that I would rather use Julia with PyCall than Python.
Julia has an excellent interop story with many languages. Probably C, Fortran and Python are the most polished.