Anand B Pillai pythonhacker

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pythonhacker / color_perf.py

Last active March 12, 2026 05:44

Performance of creation various RGB color classes using timeit

	import timeit

	for klass in (Color, ColorAttr, ColorProp, ColorAttrCustom,
	ColorDesc, ColorData, ColorTuple):
	print(f"Class: {klass.__name__}")
	code = f"{klass.__name__}(128, 128, 128)"
	setup = f"from __main__ import {klass.__name__}"
	print(timeit.timeit(stmt=code, number=1000_000, setup=setup))

pythonhacker / color_tuple.py

Last active March 12, 2026 05:29

RGB Color class using namedtuple with validation

	from collections import namedtuple

	class ColorTuple(namedtuple("ColorBase", "r g b")):
	# prevents creation of instance __dict__
	__slots__ = ()

	def __new__(cls, r=0, g=0, b=0):
	for v in (r, g, b):
	if not isinstance(v, int):
	raise TypeError("RGB values must be integers")

pythonhacker / color_attrs.py

Created March 12, 2026 05:03

RGB Color class with validation using attrs package

	import attrs

	def rgb_validator(inst, attr, value):
	# Validate type
	if type(value) is not int:
	raise ValueError("RGB values must be integers")
	# Validate range
	if not value in range(0, 256):
	raise ValueError("RGB values must be in range {0...255}")

pythonhacker / color_desc.py

Created March 12, 2026 04:50

RGB Color class with validation using a custom descriptor

	class IntRange:
	""" Custom integer range class using descriptors """

	def __init__(self, min_val, max_val):
	self._range = range(min_val, max_val)

	def __set_name__(self, owner, name):
	self.name = "_" + name

	def __get__(self, obj, objtype=None):

pythonhacker / color_attr_custom.py

Last active March 12, 2026 04:40

RGB Color class with a custom RGBColor attribute representing color

	class RGBColor(int):
	def __new__(cls, value):
	if not value in range(0, 256):
	raise ValueError("RGB values must be in range {0...255}")
	# Create the integer instance
	return super().__new__(cls, value)

	class ColorAttrCustom(Color):
	""" Color class with full attribute validation and custom color type """

pythonhacker / color_prop.py

Created March 12, 2026 04:28

RGB Color class using properties with validation

	class ColorProp(Color):
	""" RGB Color class using properties """

	def validate_rgb(self, value):
	# Validate type
	if type(value) is not int:
	raise ValueError("RGB values must be integers")
	# Validate range
	if not value in range(0, 256):
	raise ValueError("RGB values must be in range {0...255}")

pythonhacker / color_attr.py

Last active March 12, 2026 04:16

RGB Color class with validation overriding __setattr__

	class ColorAttr(Color):
	""" Color class with attribute validation """

	def __init__(self, r=0, g=0, b=0):
	self.r = r
	self.g = g
	self.b = b

	def __setattr__(self, name, value):
	if name in ("r", "g", "b"):

pythonhacker / color_dataclass.py

Created March 11, 2026 17:27

	from dataclasses import dataclass

	@dataclass(frozen=True)
	class ColorData:
	r: int = 0
	g: int = 0
	b: int = 0

	def __post_init__(self):
	for v in (self.r, self.g, self.b):

pythonhacker / test_attribute_validation.py

Last active March 12, 2026 04:21

A custom context manager for RGB classes with exception tracking

	class ExceptionCounter:
	""" Custom context manager class counting exceptions """

	def __init__(self):
	self.count = 0
	def __enter__(self):
	pass
	def __exit__(self, exc_type, exc_value, traceback):
	if exc_type and exc_value:
	self.count += 1

pythonhacker / color_simple.py

Last active March 11, 2026 16:53

A simple RGB color class with __init__ validation

	class Color:
	""" A class representing RGB colour """

	def __init__(self, r=0, g=0, b=0):
	for val in (r, g, b):
	# Validate type
	if type(val) is not int:
	raise ValueError("RGB values must be integers")
	# Validate range
	if not val in range(0, 256):