RUF037 ignores extra arguments

[dscorbett]

Summary

unnecessary-empty-iterable-within-deque-call (RUF037) ignores extra arguments. The fix can change behavior.

Starred iterable argument:

$ cat >ruf037_1.py <<'# EOF'
from collections import deque
print(deque([], *[10]).maxlen)
# EOF

$ python ruf037_1.py
10

$ ruff --isolated check ruf037_1.py --select RUF037 --preview --fix
Found 1 error (1 fixed, 0 remaining).

$ python ruf037_1.py
None

Starred mapping argument:

$ cat >ruf037_2.py <<'# EOF'
from collections import deque
print(deque([], **{"maxlen": 10}).maxlen)
# EOF

$ python ruf037_2.py
10

$ ruff --isolated check ruf037_2.py --select RUF037 --preview --fix
Found 1 error (1 fixed, 0 remaining).

$ python ruf037_2.py
None

Bogus keyword argument:

$ cat >ruf037_3.py <<'# EOF'
from collections import deque
print(deque([], foo=1).maxlen)
# EOF

$ python ruf037_3.py 2>&1 | tail -n 1
TypeError: 'foo' is an invalid keyword argument for deque()

$ ruff --isolated check ruf037_3.py --select RUF037 --preview --fix
Found 1 error (1 fixed, 0 remaining).

$ python ruf037_3.py
None

Version

ruff 0.11.13 (5faf72a 2025-06-05)