Oop

Question

I can’t understand what do this code
Can anyone help me

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

@staticmethod
def validate_topping(topping):
if topping == "pineapple":
raise ValueError("No pineapples!")
else:
return True

ingredients = ["cheese", "onions", "spam"]
if all(Pizza.validate_topping(i) for i in ingredients):
pizza = Pizza(ingredients)

Answer 1

Okay I'll explain it to you

#Create a Pizza class
class Pizza:
def __init__(self, toppings):
self.toppings = toppings

@staticmethod # What this does is create a function like def for example without using self, receiving an argument
def validate_topping(topping):
#What it does here is evaluate if the argument is equal to pineapple
if topping == "pineapple":
#If it turns out green, it will cause a created error to be thrown that says No pineapple
raise ValueError("No pineapples!")
else:
#Otherwise it will return True
return True

#Here is where to create a list of ingredients
ingredients = ["cheese", "onions", "spam"]

#What it will do is iterate the ingredients and pass each ingredient to the validate_topping method and the all function is used to verify if all the ingredients are valid, otherwise it will not print anything
if all(Pizza.validate_topping(i) for i in ingredients):
pizza = Pizza(ingredients)

Answer 2

Begin down the bottom.
You have 3 ingredients.
There's an if statement which iterates through those ingredients using "i" and checks them against the method to see if an ingredient is pineapple and raise a value error.
If the check is successfully passed I.e. there isn't any pineapple, then the pizza may exist.

Answer 3

Thanks a lot
Can you explain more