Module or Package in Python

Package in Python

Package is nothing but a group of files or classes or modules. When there are a large number of modules, it is required to organize them into package.  We can put same functionality modules/classes in a one directory.

Working with Python packages is really simple. All you need to do is:

1.   Create a directory and give it your package's name.

2.   Put your classes in it.

3.   Create a __init__.py file in the directory

Example:

1.     Create a dictionary Person

2.     Now add classes to package. Student.py and Employee.py

Student.py

class Student:

    def __init__(self):

        ''' Constructor for this class. '''

        # Create some member student

        self.members = [1,"Piyush"]

    def studData(self):

        print('Printing Student Information')

        for member in self.members:

            print('\t%s ' % member)

Employee.py

class Employee:

    def __init__(self):

        ''' Constructor for this class. '''

        # Create some member employee

        self.members = ["E1","Piyush", "Rajkot"]

    def empData(self):

        print('Printing Employee Information')

        for member in self.members:

            print('\t%s ' % member)

3.     Create a __init__.py file in the directory Person. Currently put empty file.

That's it! For testing, we create a simple file named test.py in the same directory where the Person directory is located. We place the following code in the test.py file.

# Import classes from your brand new package

from Person.Student import Student

from Person.Employee import Employee

# Create an object of Student class & call a method of it

s1= Student()

s1.studData()

# Create an object of Employee class & call a method of it

e1 = Employee ()

e1.empData()

Output:

Printing Student Information

            1

            Raj

            BCA

Printing Employee Information

            E1

            Piyush

            Rajkot