Why does importing a python module not import nested modules?

Question

If I do this:

import lxml 

in python, lxml.html is not imported. For instance, I cannot call the lxml.html.parse()

Answer 1

It's by design. The package has the option to import the nested package in its __init__.py, then, you would be able to access the nested package without problems. It's a matter of choice for the package writer, and the intent is to minimize the amount of code that you probably won't use.