python - Hierarchy in Packages -

i'm doing simulations of optical properties , started create package own use includes functions , object have written far. obvious reasons use numpy , used import numpy in modules.

now, package, wish make numpy globally available every submodule. i've gathered far, might bad practice. however, if import numpy in each module numpy key/function module, seems worse practice.

in other words: when create minimal package package/__init __.py , package/module.py , import numpy in module.py, import , print available functions

import package print package.module.__dict__.keys() ['__builtins__', '__file__', '__package__', 'numpy', '__name__', '__doc__'] 

numpy shows up. in principle access numpy via

package.module.numpy 

i not sure if problem , how done correctly.

i agree @sneftel's comment -- isn't problem.

since not part of documented interface of module, although user can see there something named numpy in module (which not numpy module, anything), grownup, user should avoid using it.