importing an attribute

[snippsat]

This is how they have made the there package.
There are several way to make a package,they could have lifted sub-modules so all was available under import botocore.
To give a example.
botocore is a folder that contain session.py and a blank __init__.py.

botocore/
 |-- __init__.py
 |-- session.py

# session.py
def egg():
    print('i am foo')

Usage:

λ ptpython
>>> import botocore

>>> botocore.session
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: module 'botocore' has no attribute 'session'
module 'botocore' has no attribute 'session'

>>> # Have to use 
>>> import botocore.session

>>> botocore.session.egg()
i am foo

There is a fix for this bye modifying the blank import in __init__.py .

# __init__.py
from .session import egg

Usage:

λ ptpython
>>> import botocore

>>> botocore.session.egg()
i am foo

>>> # Now will also work without session,also we can call egg() function in session.py directly 
>>> botocore.egg()
i am foo

When build a package have to think of stuff like this.
Can say the last version is more user friendly,if try to figure out a package without looking at doc.
But if they have in doc that most use import botocore.session,then it's kind of okay.

If i make package i try to lift sub-modules so all is available under main import,
this make import shorter and easier for user of package to figure out how import work.