outofmbufs’s gists

outofmbufs / keithnum.py

Created April 7, 2021 17:56

Generate keith numbers - OEIS A007629

	def iskeith(n):
	"""Return True if n is a Keith number - https://oeis.org/A007629"""

	if n < 10:
	return False # by definition

	# initial sequence seeding is the digits of n
	kl = [int(d) for d in str(n)] # crude, but easy. Speed not relevant.
	ksum = sum(kl)

outofmbufs / tuplify.py

Last active March 8, 2021 15:02

Python code to force something that *might* be a tuple (or a single thing) into a tuple. Useful(?) for processing arguments that can be a "thing" or multiple "things". Also defines a decorator (which seems like a horrible idea, but was fun!)

	import functools
	from collections import ChainMap


	def tuplify(arg, *, keep=str):
	"""Return tuple from an iterable or a naked single object.

	If arg is a non-iterable object, returns: (arg,)
	If arg is iterable, returns: tuple(arg)

outofmbufs / exwrap.py

Last active January 3, 2021 23:16

Python decorator to convert exception into function return value

	import functools


	__IGX_SENTINEL = object() # sentinel for a "default argument" see below


	def IgnoreExceptionsDecorator(excepts, *, exception_result=__IGX_SENTINEL):
	"""Decorator - catch exceptions and convert to a return value.

	'excepts' - exceptions (as a tuple, or a single exception) to catch

outofmbufs / argtuple.py

Last active December 15, 2020 14:44

Python argparse helper for parsing comma-separated options and other list-like parameters. Enables things like "--blah 17,42"

	# Python support for argument parsing of list-like things (usually comma separated).
	# For example:
	# def commapair(s):
	# return argtuple(s, n=2)
	# can then be used as:
	# type=commapair
	# in argparse for arguments like "--blah 17,42"
	#
	def argtuple(s, *dflts, n=None, seps=(',',), type=int):
	"""Return tuple of 'type' from a,b,c,d... format.

outofmbufs / loadmultijson.py

Last active October 18, 2021 17:28

python function to decode multiple JSON representations in a single file (stream)

	# The MIT License
	#
	# Copyright (c) 2019 Neil Webber
	#
	# Permission is hereby granted, free of charge, to any person obtaining a copy
	# of this software and associated documentation files (the "Software"), to deal
	# in the Software without restriction, including without limitation the rights
	# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	# copies of the Software, and to permit persons to whom the Software is
	# furnished to do so, subject to the following conditions:

outofmbufs / iftttmaker.ino

Last active May 21, 2021 21:44

Arduino code to trigger an IFTTT/Maker event

	// The MIT License
	//
	// Copyright (c) 2015 Neil Webber
	//
	// Permission is hereby granted, free of charge, to any person obtaining a copy
	// of this software and associated documentation files (the "Software"), to deal
	// in the Software without restriction, including without limitation the rights
	// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	// copies of the Software, and to permit persons to whom the Software is
	// furnished to do so, subject to the following conditions:

outofmbufs / vsieve.py

Created August 5, 2015 19:33

Python class implementing a Sieve of Eratosthenes functionality for vector tuples

	#!/usr/bin/env python3
	#
	# A "sieve of Eratosthenes" for integer vectors of length N.
	#
	# The original usage of this was for studying pythagorean triples and
	# filtering out those that were simply multiples of smaller ones, e.g.
	#
	# (5, 12, 13) as a "fundamental" Pythagorean triple vs
	# (10, 24, 26) as a multiple of (5, 12, 13)
	#

Neil Webber outofmbufs