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"""Compare four ways to iterate over a large binary file in chunks."""

import functools
import hashlib
import mmap
import os
import pathlib
import shutil
import time
import types

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"""Compare two ways to iterate over subdirectories of a tree."""

from collections.abc import Iterator
import os
import platform
import time

START_DIR = 'c:\\Users' if platform.system() == 'Windows' else '/usr'

xflr6

"""Compare different brute-force FCA concept generation methods."""

from collections.abc import Iterator, Sequence
from itertools import combinations, compress
import time

import gmpy2
import numpy as np

OBJECTS = ('1s', '1de', '1pe', '1di', '1pi',

xflr6

"""Benchmark FCA concepts lattice generation with bob_ross.csv."""

from collections.abc import Iterable, Iterator, Sequence
import csv
import os
import pathlib
import time
from typing import NamedTuple
import urllib.request

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Python features of interest

Python 3.15 (2026-10-01)

• [*items for items in lists]: https://docs.python.org/3.15/whatsnew/3.15.html#pep-798-unpacking-in-comprehensions
• lazy import json: https://docs.python.org/3.15/whatsnew/3.15.html#pep-810-explicit-lazy-imports
• frozendict(): https://docs.python.org/3.15/whatsnew/3.15.html#pep-814-add-frozendict-built-in-type
• UTF-8 default encoding: https://docs.python.org/3.15/whatsnew/3.15.html#other-language-changes
• $ python -W ignore:/<message_regex>/: https://docs.python.org/3.15/using/cmdline.html#cmdoption-W
• re.prefixmatch(): https://docs.python.org/3.15/library/re.html#re.prefixmatch

xflr6

"""Compare different stdlib methods to read an UTF-8 encoded text file."""

import codecs
import io
import os
import pathlib
import time

TEST_FILE = pathlib.Path('read_text.txt')