first_class.py

import collections

class FirstClass:
    def __init__(self):
        self.mean = mean
        self.median = median
        self.mode = mode
        
    def calc_mode():
        data = collections.Counter(self.mean)
        
        return 
    




class MyClass:
    def method(self):
        return 'instance method called', self

    @classmethod
    def classmethod(cls):
        return 'class method called', cls

    @staticmethod
    def staticmethod():
        return 'static method called'
    
    
    
calc_mean :  a static method that calculates the mean of set of numbers
calc_median: a class method that calculates the median of a set of numbers
calc_mode: an instance method that calculates the mode of a list of numbers


class Pizza:
    def __init__(self, ingredients):
        self.ingredients = ingredients

    def __repr__(self):
        return f'Pizza({self.ingredients!r})'

    @classmethod
    def margherita(cls):
        return cls(['mozzarella', 'tomatoes'])

    @classmethod
    def prosciutto(cls):
        return cls(['mozzarella', 'tomatoes', 'ham'])
    
import math

class Pizza:
    def __init__(self, radius, ingredients):
        self.radius = radius
        self.ingredients = ingredients

    def __repr__(self):
        return (f'Pizza({self.radius!r}, '
                f'{self.ingredients!r})')

    def area(self):
        return self.circle_area(self.radius)

    @staticmethod
    def circle_area(r):
        return r ** 2 * math.pi