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The Best of the Best Practices (BOBP) Guide for Python

A "Best of the Best Practices" (BOBP) guide to developing in Python.

In General

Values

• "Build tools for others that you want to be built for you." - Kenneth Reitz
• "Simplicity is alway better than functionality." - Pieter Hintjens

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from abc import abstractmethod, ABC
from enum import auto, Enum


class Stateful(ABC):
    @abstractmethod
    def _stateful_get(self):
        pass

    @abstractmethod

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from random import randint
from time import perf_counter
from typing import Callable, MutableSequence, Union

ItemsType = MutableSequence[Union[int, float]]


def bubble_sort(items: ItemsType):
    """Simple iterative forward marching pairwise sort algorithm."""
    requires_new_pass = True

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class QNode(QGraphicsWidget):

    def __init__(self):
        super().__init__()

        self._headerWidget = QGraphicsWidget(self)
        self._centerWidget = QGraphicsWidget(self)
        self._centerLayout = QGraphicsLinearLayout(Qt.Horizontal, self._centerWidget)

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{
  "$schema": "http://json-schema.org/draft-04/schema#",
  "title": "hivemap",
  "type": "object",
  "properties": {
    "nodes": {
      "type": "array",
      "items": {
        "$ref": "#/definitions/node"
      }

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{
  "nodes": [
    {
      "name": "my_hive",
      "position": {
        "x": 1.0,
        "y": 2.0
      },
      "folded_pins": [
        "score_out"

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class Deferred:
    def __init__(self, call, *args, **kwargs):
        self.call = getattr(call, 'func', call)
        self.args = args
        self.kwargs = kwargs

    def result(self):
        return self.call(*self.args, **self.kwargs)

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# Inspiration from http://matt.might.net/articles/implementation-of-recursive-fixed-point-y-combinator-in-javascript-for-memoization/

def y_comb(f):
    def outer(x):
        def inner(y):
            return (x(x))(y)
        return f(inner)

    return outer(outer)

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jack_data = {"name": "jack",
              "age": 8,
              "parent": None}

jill_data = {"name": "jill",
              "age": 4,
              "parent": None}
data = {
    'name': "bob",
    "jack_data": jack_data,

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class DLListItem:
    def __init__(self, value):
        self.next = None
        self.previous = None
        self.value = value

    def append(self, other) -> 'DLListItem':
        self.next = other
        other.previous = self
        return other