Python package with multiple "packages"?

Assume I have a project which looks like

uilities.py
api_1.py
api_2.py
api_3.py
foo.py
bar.py
baz.py

The utilites and api calls does nothing by their own, but they form 90% of the contents of foo.py, bar.py and baz.py.

• The contents of foo.py, bar.py and baz.py. are very bare bones, including the commandline interface they are maybe 200 lines each.

• The utility.py and api_?.py does little to nothing on their own.

E.g when I call

foo -a --other-arg 

Instead of doing, which is what I tried

long_main_package_name foo -a --other-arg 

How should i structure my project so that I can call foo.py, bar.py and baz.py directly after installing the package?