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2026-03-25 22:03:39 +01:00
parent a0073b4fb1
commit faf4ca10c9
5603 changed files with 1030866 additions and 79 deletions

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from 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