fix safety check and copilot instructions (#265)

* fix safety check and copilot instructions

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

* remove the safety check workflow

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Author: shaypal5

.github/copilot-instructions.md

@@ -0,0 +1,12 @@
+# GitHub Copilot Custom Instructions for Cachier
+
+- Cachier is a Python package providing persistent, stale-free memoization decorators for Python functions, supporting local (pickle), cross-machine (MongoDB), and in-memory caching backends.
+- Always refer to the main decorator as `@cachier`, and note that it can be configured via parameters such as `stale_after`, `backend`, `mongetter`, `cache_dir`, `pickle_reload`, `separate_files`, `wait_for_calc_timeout`, and `allow_none`.
+- Arguments to cached functions must be hashable; custom hash functions can be provided via the `hash_func` parameter for unhashable arguments.
+- The default backend is pickle-based, storing cache files in `~/.cachier/` unless otherwise specified. MongoDB and memory backends are also supported.
+- Cachier is thread-safe and supports per-function cache clearing via the `clear_cache()` method on decorated functions.
+- Global configuration is possible via `set_default_params` and `enable_caching`/`disable_caching` functions.
+- When reviewing code, ensure new features or bugfixes maintain compatibility with Python 3.9+, preserve thread safety, and follow the numpy docstring conventions for documentation.
+- Tests are located in the `tests/` directory and should be run with `pytest`. MongoDB-related tests require either a mocked or live MongoDB instance.
+- When discussing or generating code, prefer concise, readable, and well-documented Python code, and follow the established conventions in the codebase and README.
+- For documentation, follow numpy docstring conventions and validate changes to `README.rst` with `python setup.py checkdocs`.

.github/workflows/safety.yml

@@ -44,7 +44,7 @@ Features
 ========
 
 * Pure Python.
-* Compatible with Python 3.8+ (Python 2.7 was discontinued in version 1.2.8).
+* Compatible with Python 3.9+ (Python 2.7 was discontinued in version 1.2.8).
 * Supported and `tested on Linux, OS X and Windows <https://travis-ci.org/shaypal5/cachier>`_.
 * A simple interface.
 * Defining "shelf life" for cached values.