[hnswlib] Spelling bugfix in hnswlib.Index.init_index

[matulni]

This commit proposes a spelling bug-fix in the hnswlib stubs.

Issue description

Consider the following script (minimal_example.py):

# minimal_example.py
import hnswlib

index = hnswlib.Index(space="l2", dim=4)
index.init_index(
            max_elements=1000,
            ef_construction=200,
            M=6,
            allow_replace_deleted=True)

Executing

uv run python minimal_example.py

runs without problems.

Executing

uv run mypy minimal_example.py

raises

minimal_example.py:4: error: Unexpected keyword argument "allow_replace_deleted" for "init_index" of "Index"; did you mean "allow_replace_delete"?  [call-arg]
minimal_example.py:4: note: "init_index" defined in "hnswlib"
Found 1 error in 1 file (checked 1 source file)

Running

uv run pyright minimal_example.py 

raises

minimal_example.py
minimal_example.py:8:13 - error: No parameter named "allow_replace_deleted" (reportCallIssue)
1 error, 0 warnings, 0 informations

Similar typo is found in load_index:

import hnswlib

index = hnswlib.Index(space="l2", dim=4)
print(index.load_index.__doc__)

load_index(self: hnswlib.Index, path_to_index: str, max_elements: typing.SupportsInt | typing.SupportsIndex = 0, allow_replace_deleted: bool = False) -> None

Enviroment

To reproduce the issue, employ the following pyproject.toml:

[project]
name = "hnswlib-typing"
version = "0.1.0"
requires-python = ">=3.13"
dependencies = [
    "hnswlib>=0.8.0",
    "mypy>=2.3.1",
    "pyright>=1.1.414",
    "types-hnswlib>=0.8.0.20260827",
]

Additional information:

Python: 3.13.5 | packaged by Anaconda, Inc. | (main, Jun 12 2025, 11:23:37) [Clang 14.0.6 ]
OS: macOS-26.5.1-arm64-arm-64bit-Mach-O
macOS: 26.5.1
Machine: arm64
Processor: arm

[github-actions]

According to mypy_primer, this change has no effect on the checked open source code. 🤖🎉

[donbarbos]

Thank you!