diff options
author | Haoran S. Diao (刁浩然) <0@hairydiode.xyz> | 2023-07-05 04:53:17 -0700 |
---|---|---|
committer | Haoran S. Diao (刁浩然) <0@hairydiode.xyz> | 2023-07-05 04:53:17 -0700 |
commit | 7cd46f6842cc0e0c8279b1f1607d9ffb4acb9102 (patch) | |
tree | e4489aeaa83e3f944d70914689c4a02adb39a52f /e/lib/python3.11/site-packages/setuptools/_itertools.py |
initial commit, includes venv
Diffstat (limited to 'e/lib/python3.11/site-packages/setuptools/_itertools.py')
-rw-r--r-- | e/lib/python3.11/site-packages/setuptools/_itertools.py | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/e/lib/python3.11/site-packages/setuptools/_itertools.py b/e/lib/python3.11/site-packages/setuptools/_itertools.py new file mode 100644 index 0000000..b8bf6d2 --- /dev/null +++ b/e/lib/python3.11/site-packages/setuptools/_itertools.py @@ -0,0 +1,23 @@ +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 |