C:\Users\Administrator>python
Python 2.7.11 (v2.7.11:6d1b6a68f775, Dec 5 2015, 20:32:19) [MSC v.1500 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import sys
>>> sys.path
['', 'E:\\Project\\Python\\ModuleAndPackage', 'C:\\Windows\\system32\\python27.zip', 'C:\\Python\\DLLs', 'C:\\Python\\lib', 'C:\\Python\\lib\\plat-win', 'C:\\Python\\lib\\lib-tk', 'C:\\Python', 'C:\\Python\\lib\\site-packages']
>>>

>>> sys.path.append("E:\\Project\\Python\\ModuleAndPackage2")
>>> sys.path
['', 'E:\\Project\\Python\\ModuleAndPackage', 'C:\\Windows\\system32\\python27.zip', 'C:\\Python\\DLLs', 'C:\\Python\\lib', 'C:\\Python\\lib\\plat-win', 'C:\\Python\\lib\\lib-tk', 'C:\\Python', 'C:\\Python\\lib\\site-packages', 'E:\\Project\\Python\\ModuleAndPackage2']
>>> 

# -*- coding: utf-8 -*-
ID = 1
name = "This person"
print namedef say(something):
print name,'says', something

Python E:/Project/Python/ModuleAndPackage/person.py 

C:\Users\Administrator>python
Python 2.7.11 (v2.7.11:6d1b6a68f775, Dec 5 2015, 20:32:19) [MSC v.1500 32 bit (
Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import person
This person>>> person.say("hello")
This person says hello
>>> print person.nameThis person>>>

# -*- coding: utf-8 -*-
ID = 2
name = "This pet"
print namedef run(somewhere):
print name,'runs', somewhere

>>> import animal.pet
This pet>>> print animal.pet.name
This pet>>> animal.pet.run("everywhere")This pet runs everywhere>>>

>>> from animal.pet import name,run
>>> print name
This pet>>> run("everywhere")
This pet runs everywhere
>>> 

# -*- coding: utf-8 -*-
ID = 1
name = "This person"
print name
def say(something):
print name,'says', something
from animal.pet import name as pet_name, run as pet_run
def have():
print name,'has', pet_name

>>> import person
This person
This pet
>>> print person.name
This person
>>> print person.pet_name
This pet
>>> person.have()
This person has This pet
>>>

from animal.pet import * 

>>> import person
This person
This pet
>>> print person.name
This pet 

# -*- coding: utf-8 -*-
__all__ = ['ID','run']
ID = 2
name = "This pet"
print name
def run(somewhere):
print name,'runs', somewhere

>>> import person
This person
This pet
>>> print person.name
This person
>>> person.run("nowhere")
This pet runs nowhere
>>>

print "__init__"
from pet import name as pet_name, run as pet_run#from animal.pet import name as pet_name, run as pet_run #from .pet import name as pet_name, run as pet_run 

# -*- coding: utf-8 -*-
ID = 1
name = "This person"
print name
def say(something):
print name,'says', something
import animal
def have():
print name,'has', pet_name

>>> import person
This person
__init__
This pet
>>> dir(person)
['ID', '__builtins__', '__doc__', '__file__', '__name__', '__package__', 'have',
'name', 'pet', 'pet_name', 'pet_run', 'say']
>>> print person.pet_name
This pet
>>> person.pet_run("nowhere")
This pet runs nowhere
>>>