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from abc import abstractmethod
from dataclasses import field
from .artifact import Artifact
from .random_utils import random
class Collection(Artifact):
@abstractmethod
def __getitem__(self, key):
pass
class ListCollection(Collection):
items: list = field(default_factory=list)
def __getitem__(self, index):
return self.items[index]
def __len__(self):
return len(self.items)
def append(self, item):
self.items.append(item)
def extend(self, other):
self.items.extend(other.items)
def __add__(self, other):
return ListCollection(self.items.__add__(other.items))
class DictCollection(Collection):
items: dict = field(default_factory=dict)
def __getitem__(self, key):
return self.items[key]
class ItemPicker(Artifact):
item: object = None
def __call__(self, collection: Collection):
try:
return collection[int(self.item)]
except (SyntaxError, KeyError, ValueError) as e: # in case picking from a dictionary
return collection[self.item]
class RandomPicker(Artifact):
def __call__(self, collection: Collection):
if isinstance(collection, ListCollection):
return random.choice(list(collection.items))
elif isinstance(collection, DictCollection):
return random.choice(list(collection.items.values()))
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