/Advent-of-code-2020

Primary LanguagePythonMIT LicenseMIT

Advent-of-code-2020

Build Status

I have learned

Before 3.7, you cant refer to the self.class definition. You have to wrap the class name with single quotes.

class Policy(object):
    def __enter__(self) -> 'Policy':
        pass

This is fixed in python 3.7

from __future__ import annotations

class Policy(object):
    def __enter__(self) -> Policy:
        pass