danieljfarrell’s gists

danieljfarrell / environment.yml

Created January 11, 2019 16:41

Conda environment

danieljfarrell / test_traitsui_quamash.py

Last active February 22, 2020 13:31

An example of asynchronous programming with TraitsUI using QT5 backend with Quamash event loop to work with asyncio.

	"""
	This code was helpful,
	https://stackoverflow.com/questions/32141623/pyqt5-and-asyncio-yield-from-never-finishes
	"""
	import os
	import sys
	import quamash
	import asyncio
	import traceback
	import PyQt5

danieljfarrell / reset_timer.py

Created January 28, 2019 12:27 — forked from aeroaks/reset_timer.py

Reset Timer in Python

	from threading import Thread, Event, Timer
	import time

	def TimerReset(args, *kwargs):
	""" Global function for Timer """
	return _TimerReset(args, *kwargs)


	class _TimerReset(Thread):
	"""Call a function after a specified number of seconds:

danieljfarrell / async_slot.py

Created March 20, 2019 12:44 — forked from ericfrederich/async_slot.py

Example of using an asyncio coroutine as a Qt slot

	import math
	import sys
	import asyncio
	from functools import partial, wraps
	from PyQt5.QtWidgets import QApplication, QWidget, QPushButton, QGridLayout, QProgressBar, QErrorMessage
	from PyQt5.QtCore import Qt
	from quamash import QEventLoop
	import traceback

danieljfarrell / DoubleSlider.py

Created April 1, 2019 07:30 — forked from dennis-tra/DoubleSlider.py

PyQt - QSlider for float or double values + tests

	from PyQt5.QtWidgets import QSlider

	class DoubleSlider(QSlider):

	def __init__(self, args, *kwargs):
	super().__init__(args, *kwargs)
	self.decimals = 5
	self._max_int = 10 ** self.decimals

	super().setMinimum(0)

danieljfarrell / app.py

Created May 10, 2019 10:48

Example of using QTreeView with QAbstractItemModel from https://www.hardcoded.net/articles/using_qtreeview_with_qabstractitemmodel

	if __name__ == "__main__":

	from PyQt5.QtCore import QAbstractItemModel, QFile, QIODevice, QModelIndex, Qt
	from PyQt5.QtWidgets import QApplication, QTreeView
	import sys
	from tree_model import TreeModel, TreeNode, RefNode


	class NamedElement(object): # your internal structure
	def __init__(self, name, subelements):

danieljfarrell / state_transitions.py

Created June 7, 2019 13:41

Using an @visits decorator with an async generator to monitor and enforce state transitions

	import asyncio
	import traceback
	import enum
	import functools


	class InvalidVisitedState(Exception):
	""" Raised when an state change sequence is incorrect.
	"""
	pass

danieljfarrell / treeview_test.py

Last active April 26, 2022 02:36 — forked from nbassler/treeview_test.py

PyQt5 TreeView with QAbstractItemModel

	"""
	Reworked code based on
	http://trevorius.com/scrapbook/uncategorized/pyqt-custom-abstractitemmodel/

	Adapted to Qt5 and fixed column/row bug.

	TODO: handle changing data.
	"""

	import sys

danieljfarrell / docker-compose.yml

Last active May 16, 2020 14:23

This is a single file docker-compose.yml version of tutorial https://medium.com/@containeroo/traefik-2-0-docker-a-simple-step-by-step-guide-e0be0c17cfa5 where all static config. is also done in the compose yaml file

danieljfarrell / solve_ode_sys.nb

Created June 30, 2020 14:06

Solve chemical reaction for steady-state using Mathematica

	ClearAll["Global`*"];
	eqns = {X'[t] == P - (k1 + k2) X[t] + A k1 X[t], Y'[t] == k1 X[t] - A k1 X[t] - k3 Y[t], X[0] == 0, Y[0] == 0}
	s = Assuming[k0 > 0 && k1 > 0 && k2 > 0 && k3 > 0 && P > 0 && A >= 0 && A < 1, Limit[DSolveValue[eqns,{X[t], Y[t]}, t], t -> \[Infinity]]]

Daniel danieljfarrell