sourceperl’s gists

sourceperl / flow_coefficient.py

Last active December 5, 2022 11:31

Cv and flow compute for gas process valve

	#!/usr/bin/env python3

	"""
	Some function to deal with Cv flow coefficient of gas valve.

	https://www.swagelok.com/downloads/webcatalogs/EN/MS-06-84.pdf
	"""


	import math

sourceperl / cam2redis.py

Last active May 3, 2021 09:50

Cast webcam jpeg image via redis DB also provide an example of tkinter client

	#!/usr/bin/env python3

	from datetime import datetime
	import time
	import io
	import sys
	import urllib.request
	# sudo pip3 install schedule
	import schedule
	# sudo apt install python3-pil python3-pil.imagetk

sourceperl / tk_webcam.py

Last active May 3, 2021 09:50

Display an auto-refresh webcam image (PNG) in a tkinter app

	from datetime import datetime
	import io
	import sys
	import urllib.request
	import tkinter as tk
	# sudo apt install python3-pil python3-pil.imagetk
	import PIL.Image
	import PIL.ImageTk

sourceperl / rpi-monitoring.py

Last active December 3, 2020 09:12

Monitoring Raspberry Pi CPU temp + memory + a docker volume size to influxdb series

sourceperl / propfind_request.py

Last active January 10, 2023 13:49

Python custom WebDAV PROPFIND on an owncloud server with requests HTTP library

	#!/usr/bin/env python3
	from xml.dom import minidom
	import requests

	# some consts
	HTTP_MULTI_STATUS = 207
	PROPFIND_REQUEST = '''<?xml version="1.0" encoding="utf-8" ?>
	<d:propfind xmlns:d="DAV:">
	<d:prop xmlns:oc="http://owncloud.org/ns">
	<d:getlastmodified/>

sourceperl / co2_view.py

Last active November 15, 2019 14:37

CO2 concentrations view and polynomial predict with matplotlib, pandas and numpy

	#!/usr/bin/env python3

	# pandas example with CSV data from atmospheric CO2 concentrations (ppm) at Mauna Loa, Observatory, Hawaii
	# display current value with matplotlib
	# try to predict future values with 2nd order polynomial coefficients auto-adjust
	# test with numpy==1.16.2, pandas==0.19.2

	import numpy as np
	import pandas as pd
	import matplotlib.pyplot as plt

sourceperl / pure_py_dft.py

Last active June 21, 2019 14:51

Sample compute of a DFT (Discrete Fourier Transform) with pure python code (without numpy usage)

	#!/usr/bin/env python3
	# sample compute of a DFT (Discrete Fourier Transform) with pure python code (without numpy usage)

	from cmath import exp
	from math import pi, sin
	import random


	def dft(samples):
	xl = [0.0] * len(samples)

sourceperl / surface3d_valve_flow.py

Created June 10, 2019 13:21

3d graph of control valve dynamic (flow vs pressure/valve travel)

	#!/usr/bin/env python3
	# play with cv ( coefficient of flow) of control valve

	from mpl_toolkits.mplot3d import Axes3D
	import matplotlib.pyplot as plt
	from matplotlib import cm
	import numpy as np

	# some const (see http://www.idealvalve.com/pdf/Flow-Calculation-for-Gases.pdf)
	SG = 0.554

sourceperl / fly-build-csv

Last active April 11, 2019 14:56

flyspray CSV export tool

	#!/bin/sh

	# populate pub/ http directory with flyspray CSV export
	# copy this script to /etc/cron.weekly

	# csv file build name
	YEAR=$(date +%Y)
	CSV_FILE=export_$YEAR.csv

	/usr/local/bin/flyspray2csv > /var/www/html/pub/flyspray/$CSV_FILE

sourceperl / ttn-build-key

Last active October 30, 2018 10:49

TTN utils

	#!/usr/bin/env python3

	import random

	key8 = ''.join(random.choice('0123456789ABCDEF') for n in range(16))
	key16 = ''.join(random.choice('0123456789ABCDEF') for n in range(32))

	print("generate 8 bytes key: %s" % key8)
	print("generate 16 bytes key: %s" % key16)

l.lefebvre sourceperl