optiver

Kinda nice (and not ugly) optional chaining for Python. Access nested attributes without crashing on Nones.

Example

from optiver import opt

user = get_user()  # .profile might be None

theme = ~opt(user).profile.settings.theme  # theme is str | None, won't crash

API

opt(value)  # wrap a value
~wrapped    # unwrap to get result

Chain any attributes. If any value in the chain is None, the rest short-circuits and returns None. Missing attrs still raise AttributeError.

Install

pip install optiver  # TODO: publish to PyPI

Notes

• ~ is the unwrap operator (Python's __invert__)
• Crashes on missing attrs (like normal Python)
• Safely chains through None values
• No runtime dependencies
• Unfortunately kinda hard to type-check this but if you really cared about that would you really be using Python. Just add unit tests!