Importing pycraf and subpackages

Using pycraf in Python is as simple as:

import pycraf

Then one can access the subpackages via:

pycraf.<subpackage>

and call associated functions, e.g.:

pycraf.conversions.free_space_loss(...)

It is also possible to do:

from pycraf import <subpackage>

Or, if you want to avoid typing a lot:

from pycraf.<subpackage> as <abbreviation>
from pycraf.<subpackage> import <function>

For example:

from pycraf import conversions as cnv
cnv.free_space_loss(...)

from pycraf.conversions import free_space_loss
free_space_loss(...)