what does __init__.py do in python code example

Example 1: __init__ python

class Person:
  def __init__(self, name, age):
    self.name = name
    self.age = age

p1 = Person("John", 36) // Object definition

print(p1.name)
print(p1.age)

Example 2: what is __init__ in python

# If you are familiar with C++ or Java think of the __init__ method as a constructor.
# It is the method that is being called when the class is called.In the following
# example we will see how we can call the __init__ method

my_variable = MyClass()

Example 3: init function in python

class Rectangle:
   def __init__(self, length, breadth, unit_cost=0):
       self.length = length
       self.breadth = breadth
       self.unit_cost = unit_cost
   def get_area(self):
       return self.length * self.breadth
   def calculate_cost(self):
       area = self.get_area()
       return area * self.unit_cost
# breadth = 120 units, length = 160 units, 1 sq unit cost = Rs 2000
r = Rectangle(160, 120, 2000)
print("Area of Rectangle: %s sq units" % (r.get_area()))

Example 4: init in python

class Employee():
    no_of_leaves = 8

    def __init__(self, aname, asalary, arole):
        self.name = aname
        self.salary = asalary
        self.role = arole

    def printdetail(self):
        return f"Name is {self.name}. His salary is {self.salary}." \
               f"and his role is {self.role}"

Example 5: import __init__.py

# use this for python script(s) in same folder where __init__.py is in
# it'll save typing up common imports for multiple python scripts
from . import *

# if want to be specific
from . import hello_world