26 lines
691 B
Python
26 lines
691 B
Python
import random
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from typing import Any, Iterable, TYPE_CHECKING
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from randompick import RandomPicker # <1>
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class SimplePicker: # <2>
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def __init__(self, items: Iterable) -> None:
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self._items = list(items)
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random.shuffle(self._items)
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def pick(self) -> Any: # <3>
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return self._items.pop()
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def test_isinstance() -> None: # <4>
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popper: RandomPicker = SimplePicker([1]) # <5>
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assert isinstance(popper, RandomPicker) # <6>
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def test_item_type() -> None: # <7>
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items = [1, 2]
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popper = SimplePicker(items)
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item = popper.pick()
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assert item in items
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if TYPE_CHECKING:
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reveal_type(item) # <8>
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assert isinstance(item, int)
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