Trey Hunner treyhunner

## time_dict_merge.py
"""
Results:

multiple_update: 33 ms
copy_and_update: 27 ms
dict_constructor: 29 ms
kwargs_hack: 33 ms
dict_comprehension: 33 ms
concatenate_items: 81 ms
union_items: 81 ms

## time_count_functions.py
"""
Test performance of these counting methods:

- count_if_else: Set to 1 if not yet seen and increment otherwise
- count_if: Set to 0 if not yet seen, then increment regardless of containment
- count_exception: Attempt to increment and set to 1 if KeyError caught
- count_setdefault: Set default value to 0, then increment
- count_fromkeys: Create dict with necessary keys set to 0, then increment each
- count_set_and_comprehension: Create dict of items and counts using a set
- count_defaultdict: Increment count, automatically setting unseen values to 0

## easy_repr.py
def easy_repr(obj):
    """
    Function to find the type of an object and its attributes

    Example:

        >>> class Point:
        ...     def __init__(self, x, y, z, color=None):
        ...         self.x, self.y, self.z = x, y, z
        ...         self.color = color

## rectangle.py
class Rectangle:

    def __init__(self, width, height):
        self.width, self.height = width, height

    def __repr__(self):
        return f"Rectangle({self.width}, {self.height})"

    @property
    def area(self):

## reversible_flags.py
"""
Script to print all Unicode flag emoji are also a valid flag when reversed.

Output of this script:

🇦🇬 (Antigua and Barbuda) reverses to 🇬🇦 (Gabon)
🇦🇱 (Albania) reverses to 🇱🇦 (Lao People's Democratic Republic)
🇦🇲 (Armenia) reverses to 🇲🇦 (Morocco)
🇦🇶 (Antarctica) reverses to 🇶🇦 (Qatar)
🇦🇸 (American Samoa) reverses to 🇸🇦 (Saudi Arabia)

## my_unicodedata_db.py
"""
Tool that names each unicode character based on their name or their aliases

Must be run from the cpython repo root directory:
https://github.com/python/cpython/tree/3.10

Relies on Tools.unicode being an importable path due to implicit packages
"""
from contextlib import redirect_stderr, redirect_stdout
from io import StringIO

## utf8ify.py
"""
Just some code that needlessly converts unicode codepoints to UTF-8.

Example:

    $ python utf8ify.py U+2728
    Bytes: 0xe2 0x9c 0xa8
    Text: ✨

    $ python utf8ify.py U+1F3F3 U+FE0F U+200D U+1F308

## super.py
import inspect


_SENTINEL = object()


class super:

    """The built-in super "function" re-implemented."""

## walrus_oddity.py
"""
while n < 10 and chunk := f.read(256):  # SyntaxError

while n < 10 and (chunk := f.read(256)):  # Works

while chunk := f.read(256) and n < 10:  # chunk will be a boolean 😮

"""
from io import StringIO

## flatten_time.py
"""
Demonstration of how slow sum can be for flattening lists-of-lists

Output on my machine:
0.019118324998999014 itertools.chain.from_iterable
0.03325132900135941 comprehension
10.947899631002656 sum

Using sum on a list results in a loop inside a loop (a new list is made for
each new sub-list) so the more sub lists there are, the bigger the timing
	"""
	Results:

	multiple_update: 33 ms
	copy_and_update: 27 ms
	dict_constructor: 29 ms
	kwargs_hack: 33 ms
	dict_comprehension: 33 ms
	concatenate_items: 81 ms
	union_items: 81 ms
	"""
	Test performance of these counting methods:

	- count_if_else: Set to 1 if not yet seen and increment otherwise
	- count_if: Set to 0 if not yet seen, then increment regardless of containment
	- count_exception: Attempt to increment and set to 1 if KeyError caught
	- count_setdefault: Set default value to 0, then increment
	- count_fromkeys: Create dict with necessary keys set to 0, then increment each
	- count_set_and_comprehension: Create dict of items and counts using a set
	- count_defaultdict: Increment count, automatically setting unseen values to 0
	def easy_repr(obj):
	"""
	Function to find the type of an object and its attributes

	Example:

	>>> class Point:
	... def __init__(self, x, y, z, color=None):
	... self.x, self.y, self.z = x, y, z
	... self.color = color
	class Rectangle:

	def __init__(self, width, height):
	self.width, self.height = width, height

	def __repr__(self):
	return f"Rectangle({self.width}, {self.height})"

	@property
	def area(self):
	"""
	Script to print all Unicode flag emoji are also a valid flag when reversed.

	Output of this script:

	🇦🇬 (Antigua and Barbuda) reverses to 🇬🇦 (Gabon)
	🇦🇱 (Albania) reverses to 🇱🇦 (Lao People's Democratic Republic)
	🇦🇲 (Armenia) reverses to 🇲🇦 (Morocco)
	🇦🇶 (Antarctica) reverses to 🇶🇦 (Qatar)
	🇦🇸 (American Samoa) reverses to 🇸🇦 (Saudi Arabia)
	"""
	Tool that names each unicode character based on their name or their aliases

	Must be run from the cpython repo root directory:
	https://github.com/python/cpython/tree/3.10

	Relies on Tools.unicode being an importable path due to implicit packages
	"""
	from contextlib import redirect_stderr, redirect_stdout
	from io import StringIO
	"""
	Just some code that needlessly converts unicode codepoints to UTF-8.

	Example:

	$ python utf8ify.py U+2728
	Bytes: 0xe2 0x9c 0xa8
	Text: ✨

	$ python utf8ify.py U+1F3F3 U+FE0F U+200D U+1F308
	import inspect


	_SENTINEL = object()


	class super:

	"""The built-in super "function" re-implemented."""
	"""
	while n < 10 and chunk := f.read(256): # SyntaxError

	while n < 10 and (chunk := f.read(256)): # Works

	while chunk := f.read(256) and n < 10: # chunk will be a boolean 😮

	"""
	from io import StringIO
	"""
	Demonstration of how slow sum can be for flattening lists-of-lists

	Output on my machine:
	0.019118324998999014 itertools.chain.from_iterable
	0.03325132900135941 comprehension
	10.947899631002656 sum

	Using sum on a list results in a loop inside a loop (a new list is made for
	each new sub-list) so the more sub lists there are, the bigger the timing