maxfischer2781’s gists

maxfischer2781 / new_factory.py

Created February 23, 2021 10:28

Example of using `__new__` as a subclass factory

	class Number:
	def __new__(cls, literal):
	for scls in cls.__subclasses__():
	try:
	return scls(literal)
	except (TypeError, ValueError):
	pass
	raise TypeError("The path to hell is paved with incomplete examples")

	# here be numerical operations!

maxfischer2781 / udp_deck.py

Last active June 22, 2021 16:37

Utility to record/replay UDP datagrams

	#!/usr/bin/env python3
	from typing import BinaryIO
	import socket
	import argparse
	import pathlib
	import struct
	import time


	CLI = argparse.ArgumentParser(

maxfischer2781 / pyparsing_lr.py

Created June 27, 2021 17:33

Railroad for a left-recursive PyParsing grammar

	import pyparsing as pp
	from pyparsing.diagram import to_railroad, railroad_to_html
	import tempfile
	import webbrowser

	pp.ParserElement.enable_left_recursion()

	# named references
	expr = pp.Forward().setName("expr")
	add_sub = pp.Forward().setName("add_sub")

maxfischer2781 / context_average.py

Created July 7, 2021 17:36

Use a context manager to average over several method calls

	from contextlib import contextmanager


	class Optimizer:
	def __init__(self, weight: int):
	self.weight = weight

	def step(self, num):
	num = self.calculate(num)
	return self.apply(num)

maxfischer2781 / decosample.py

Last active August 30, 2021 11:52

Helper that allows using the same decorator for both functions and methods

	"""
	Basic "Decoscriptor" example
	"""
	from decoscriptor import anydeco

	@anydeco
	def art(fun, args, *kwargs):
	print("Big Whoop and a bottle of", args, kwargs)
	print("Fun is set to", getattr(fun, "__self__", "<unbound>"))
	return fun(args, *kwargs)

maxfischer2781 / base_playground.py

Last active October 14, 2021 07:43

Simple Physics Notation to Quantum Circuit example

	# Measuring < 00 \| X \| 00 >, < 01 \| X \| 00 >, < 10 \| X \| 00 >, < 11 \| X_0 \| 00 >
	from qiskit import QuantumCircuit
	from qiskit.providers.aer import QasmSimulator
	import time

	# Use Aer's qasm_simulator
	simulator = QasmSimulator()

	# Circuit setup
	circuit = QuantumCircuit(2) # \|00>

maxfischer2781 / gather_overhead.py

Created October 27, 2021 11:31

Script for measuring the overhead of asyncio.gather

	import asyncio
	import time


	async def no_op():
	return


	async def main_gather(count):
	await asyncio.gather(*(asyncio.gather(no_op()) for _ in range(count)))

maxfischer2781 / slot_lookup.py

Created January 11, 2022 09:25

Draft for special method lookup

	def slot_get(ob: object, field: str):
	tp = type(ob)
	try:
	field = tp.__dict__[field]
	except KeyError:
	return getattr(super(tp, ob), field)
	else:
	try:
	descriptor_get = field.__get__
	except AttributeError:

maxfischer2781 / except_delete.py

Created February 28, 2022 16:48

Demonstrator for except clause deleting its target

	v = "Hello World"

	def scope():
	global v
	try:
	1/0
	except ZeroDivisionError as v:
	pass

	print(v)

maxfischer2781 / apel.diff

Created May 11, 2023 13:46

APEL HEPScore23 Patch

	diff -cB --recursive production/usr/lib/python2.7/site-packages/apel/db/__init__.py patched/usr/lib/python2.7/site-packages/apel/db/__init__.py
	*** production/usr/lib/python2.7/site-packages/apel/db/__init__.py 2021-03-22 17:42:15.000000000 +0100
	--- patched/usr/lib/python2.7/site-packages/apel/db/__init__.py 2023-04-05 10:39:54.000000000 +0200
	***************
	* 15,21 **
	'''

	LOGGER_ID = "apeldb"
	! JOB_MSG_HEADER = "APEL-individual-job-message: v0.3"
	SUMMARY_MSG_HEADER = "APEL-summary-job-message: v0.2"

Max Kühn maxfischer2781