[config.git] / djavu-asus / elpy / rpc-venv / lib / python3.11 / site-packages / setuptools / _itertools.py

from setuptools.extern.more_itertools import consume  # noqa: F401


# copied from jaraco.itertools 6.1
def ensure_unique(iterable, key=lambda x: x):
    """
    Wrap an iterable to raise a ValueError if non-unique values are encountered.

    >>> list(ensure_unique('abc'))
    ['a', 'b', 'c']
    >>> consume(ensure_unique('abca'))
    Traceback (most recent call last):
    ...
    ValueError: Duplicate element 'a' encountered.
    """
    seen = set()
    seen_add = seen.add
    for element in iterable:
        k = key(element)
        if k in seen:
            raise ValueError(f"Duplicate element {element!r} encountered.")
        seen_add(k)
        yield element
Commit	Line	Data
53e6db90 DC	1	from setuptools.extern.more_itertools import consume # noqa: F401
	2
	3
	4	# copied from jaraco.itertools 6.1
	5	def ensure_unique(iterable, key=lambda x: x):
	6	"""
	7	Wrap an iterable to raise a ValueError if non-unique values are encountered.
	8
	9	>>> list(ensure_unique('abc'))
	10	['a', 'b', 'c']
	11	>>> consume(ensure_unique('abca'))
	12	Traceback (most recent call last):
	13	...
	14	ValueError: Duplicate element 'a' encountered.
	15	"""
	16	seen = set()
	17	seen_add = seen.add
	18	for element in iterable:
	19	k = key(element)
	20	if k in seen:
	21	raise ValueError(f"Duplicate element {element!r} encountered.")
	22	seen_add(k)
	23	yield element