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#!/usr/bin/python

"""

@staticmethod decorator is used to add static methods, that's shared commonly by all the instances

"""

class Employee:

""" Employee class """

emp_serial = 1001

pf_serial = 101

@staticmethod

def _generate_pf_serial():

pf_number = Employee.pf_serial

Employee.pf_serial += 1

return pf_number

def __init__(self, name, dept):

""" Parameterized constructor with default Arguments """

self.name = name

self.dept = dept

# Can't access 'next_serial' like this!

# self.emp_id = next_serial

# next_serial += 1

# Not readable! 'next_serial' shouldn't be part of the of an object!

# self.emp_id = self.next_serial

# self.next_serial += 1

self.emp_id = Employee.emp_serial

Employee.emp_serial += 1

self.pf_number = Employee._generate_pf_serial()

def __str__(self):

return 'Employee({}, {}, {}, {})'.format(self.emp_id, self.name, self.dept, self.pf_number)

# Creating a Employee instance

print('------------------- Employee - Ravi ----------------------')

emp_ravi = Employee('Ravi', 'Data Engineering')

print(emp_ravi)

print()

# Creating a Data Science Employee instance

print('------------------- Employee - Roshith ---------------------')

emp_roshith = Employee('Roshith', 'Data Engineering')

print(emp_roshith)