python import modules inside folder

Question

Want to learn the proper way for importing modules with folder

/garden
    __init__.py
    utilities.py
    someTools.py
    /plants
        __init__.py
        carrot.py
        corn.py

Inside /plants/__init__.py I have

__all__ = ['carrot', 'corn']
from . import *

inside carrot.py

def info():
    print "I'm in carrot.py"

When I do

import garden
garden.carrot.info()
# got correct result
I'm in carrot.py

My question is how do I correct namespace for utilities.py for example inside carrot.py and corn.py. I want to use function in utilities.py

Inside carrot.py when I

import utilities as util

# try use it and got global name error
util.someFunc()
# NameError: global name 'util' is not defined # 

Can I configure __init__.py in plants folder so that it import all the modules inside garden? Like utilities and sometools ? so I don't have to import utilities in both carrot.py and corn.py and be able to use utilities ?

Answer 1

note: all __init__.py files are empty.

main.py
app/ ->
    __init__.py
    package_a/ ->
       __init__.py
       fun_a.py
    package_b/ ->
       __init__.py
       fun_b.py

app/package_a/fun_a.py

def print_a():
    print 'This is a function in dir package_a'

app/package_b/fun_b.py

from app.package_a.fun_a import print_a
def print_b():
    print 'This is a function in dir package_b'
    print 'going to call a function in dir package_a'
    print '-'*30
    print_a()

main.py

from app.package_b import fun_b
fun_b.print_b()

if you run $ python main.py it returns:

This is a function in dir package_b
going to call a function in dir package_a
------------------------------
This is a function in dir package_a

• main.py does: from app.package_b import fun_b
• fun_b.py does from app.package_a.fun_a import print_a

If you have app in your PYTHONPATH, then from anywhere you can >>> from app.package_...

so file in folder package_b used file in folder package_a, which is what you want. Right??