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import random
from abc import ABC, abstractmethod
from copy import copy
from exceptions import DeadPlantError, NoMoreFruitsError
from fruit import Fruit
from root import Root
class Plant(ABC):
def __init__(self, species: str, growth_factor: float):
self.species = species
self.growth_factor = growth_factor
self._size = 1
self.dead = False
def __repr__(self):
return f"{self.species}"
def __str__(self):
return f"{self.species} of size {self.size:.1f}"
@property
def growth_factor(self):
return self._growth_factor
@growth_factor.setter
def growth_factor(self, growth_factor: float):
if growth_factor <= 1:
raise ValueError(f"Invalid growth_factor: {growth_factor} (>1 required)")
self._growth_factor = growth_factor
@property
def size(self):
return self._size
def grow(self) -> None:
if self.dead:
raise DeadPlantError("{self} is dead, it can't grow")
self._size *= self.growth_factor
@abstractmethod
def harvest(self) -> list:
raise NotImplementedError
class FruitBearingPlant(Plant):
def __init__(self, species: str, growth_factor: float, fruit_template: Fruit):
super().__init__(species, growth_factor)
self.fruit_template = fruit_template
self._fruits = []
def __str__(self):
return f"{self.species} of size {self.size:.1f} with {len(self.fruits)} fruits"
@property
def fruits(self):
return self._fruits
@fruits.deleter
def fruits(self):
self._fruits.clear()
def grow(self) -> None:
super().grow()
if random.randrange(100) < self.size:
self.fruits.append(copy(self.fruit_template))
def pick(self) -> Fruit:
if not self.fruits:
raise NoMoreFruitsError(f"{self} is empty, you can't pick any more fruits :(")
return self.fruits.pop()
def harvest(self) -> list:
harvested = []
while True:
try:
harvested.append(self.pick())
except NoMoreFruitsError:
return harvested
class RootVegetable(Plant):
def __init__(self,
species: str,
growth_factor: float,
calories_per_root_length: int,
plant_size_to_root_length_factor: float):
super().__init__(species, growth_factor)
self._root = Root(self.species, calories_per_root_length)
self._plant_size_to_root_length_factor = plant_size_to_root_length_factor
def grow(self):
super().grow()
self._root.length = self._size * self._plant_size_to_root_length_factor
def harvest(self) -> list:
self.dead = True
if self._root is None:
return []
harvested = [self._root]
self._root = None
return harvested