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from typing import Sequence, TypeVar
from hamcrest.core.base_matcher import BaseMatcher
from hamcrest.core.description import Description
from hamcrest.core.matcher import Matcher
__author__ = "Jon Reid"
__copyright__ = "Copyright 2011 hamcrest.org"
__license__ = "BSD, see License.txt"
T = TypeVar("T")
class IsIn(BaseMatcher[T]):
def __init__(self, sequence: Sequence[T]) -> None:
self.sequence = sequence
def _matches(self, item: T) -> bool:
return item in self.sequence
def describe_to(self, description: Description) -> None:
description.append_text("one of ").append_list("(", ", ", ")", self.sequence)
def is_in(sequence: Sequence[T]) -> Matcher[T]:
"""Matches if evaluated object is present in a given sequence.
:param sequence: The sequence to search.
This matcher invokes the ``in`` membership operator to determine if the
evaluated object is a member of the sequence.
"""
return IsIn(sequence)