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import inspect
from enum import Enum, auto, EnumType


class EnumCaptureDict(dict):
    def __getitem__(self, item):
        if item in self or (item.startswith("__") and item.endswith("__")):
            return super().__getitem__(item)

        frame = inspect.currentframe().f_back

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from typing import Type, TypeVar


class Sentinel:
    def __new__(cls):
        instance = super().__new__(cls)
        cls.__new__ = lambda _: instance
        return instance

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from typing import Generic, TypeVar


T = TypeVar("T")


class Node(Generic[T]):
    def __init__(self, value: T, parent: "Node[T] | None" = None):
        self._children = tuple()
        self._parent = parent

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from typing import Generic, TypeVar


T = TypeVar("T")


class Node(Generic[T]):
    def __init__(self, value: T, head: "Node | None" = None, next_node: "Node | None" = None):
        self.head = self if head is None else head
        self.next = next_node

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import asyncio
from state_machine import StateMachine, State


class CountBsAfterAs(StateMachine):
    def __init__(self):
        super().__init__()
        self.num_bs_after_as = 0

    @State

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from __future__ import annotations

import json
from dataclasses import dataclass, MISSING, field as _field
from typing import Any, Callable


class MutationDescriptor:
    def __init__(self, mutator: Callable[[Any], Any]):
        self._mutator = mutator

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Sets vs Lists in Python

This is just a fun demo of how lists and sets handle the in lookup.

Code

class Testing:
    def __init__(self, name):
        self.name = name

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Challenge 175 - Syncopated Rhythm

Syncopation means an emphasis on a weak beat of a bar of music; most commonly, beats 2 and 4 (and all other even-numbered beats if applicable).

s is a line of music, represented as a string, where hashtags # represent emphasized beats. Create a function that returns if the line of music contains any syncopation.

Examples

has_syncopation(".#.#.#.#") ➞ True
# There are Hash signs in the second, fourth, sixth and

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Challenge 174 - Revised Julian Calendar

Background

The Revised Julian Calendar is a calendar system very similar to the familiar Gregorian Calendar, but slightly more accurate in terms of average year length. The Revised Julian Calendar has a leap day on Feb 29th of leap years as follows:

• Years that are evenly divisible by 4 are leap years.
• Exception: Years that are evenly divisible by 100 are not leap years.
• Exception to the exception: Years for which the remainder when divided by 900 is either 200 or 600 are leap years.

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Challenge 173 - Replace With Alphabet Position

Given a string, replace every letter with its position in the alphabet.

If anything in the text isn't a letter, ignore it and don't include it in the output.

"a" = 1, "b" = 2, etc.

Example