packages in python

Packages:

• package is a directory or folder.
• Application is a collection of packages.
• package is a collection of modules
• package contains related python source files called modules.
• Every module contains classes, variables and functions.

Accessing module inside package:

• ‘from’ keyword need to be used to access any module from the package.
• We must specify the module name while accessing functionality of that module.

…..desktop/pack/one.py :

def m1():
    print("pack-one-m1()")
    return

def m2():
    print("pack-one-m2()")
    return

…..desktop/two.py:

from pack import one

one.m1()
one.m2()

Accessing classes in Modules:

• A module is a collection classes.
• We can import the module using ‘from’ keyword
• Accessing class must be possible using module name.

…./desktop/pack/one.py:

class First:
    def m1():
        print("pack-one-First-m1()")
        return

class Second:
    def m2(self):
        print("pack-one-Second-m2()")
        return

…./desktop/access.py:

from pack import one

class Access:
    def main():
        one.First.m1()

        obj = one.Second()
        obj.m2()
        return

Access.main()