CodingTips.md

1. Python API convention: functions or methods that change an object in place should return None to make it clear to the caller that the object itself was changed
2. Default Arguments should have a non-mutable default value.
3. Module references:

• bisect : Binary Search. Inserting in sorted array
• pickle : Serialising/de-serialising data for disk storage.

4. Mutable = not hashable.
5. Use __setitem__ and __getitem__ in order to provide object[key] functionality.
6. Access object attributes:

>>> dir (int)

7. functools.lru_cache(maxsize=128, typed=False) for memoizing the code, much beneficial when fetching info from web or when storing previous results would be helpful.
   • maxsize = Max number of call results stored.
   • typed = stores output of diff. argument types seperately, Eg: 1(int) and 1.0(float)
   • Note: It stores everything in a dictionary, with key= *args/**kwargs made in the function call.
8. __del__ is only for interpreter and not developer, as the interpreter calls it and end for cleanup, if you need to do something at clearn up sue atexit module.