Python packages

package:

• package is nothing but a folder or directory which represents collection of python modules.

• any folder or directory contains python modules,that folder or directory is called python package.

• any folder or directory called python package that folder or directory contains __init__.py module(file)

• a package can contain python modules and also can contain sub-packages.

• every sub-package should contain __init__.py module(file) 

We can import the properties of modules of packages using

• import  package_name. module_name

• from  package_name. module_name  import  property

create directory with dir1 and place below x.py in dir1

a=10

def  f1( ):

       print("In f1 of x")

create directory with dir2 in dir1  and place below y.py in dir2

b=20

def f2( ):

       print("In f2 of y")

test.py must be outside dir1 folder

import dir1.x

from dir1.dir2.y import b,f2

print(dir1.x.a)

dir1.x.f1()

print(b)

f2()

10

In f1 of x

20

In f2 of y