Jasata

#! /usr/bin/env python3
#
#   ConfigFile.py - Jani Tammi <[email protected]>
#
#   NOTE:   You obviously still need the proper privileges.
#           You cannot run this as a regular user and set
#           owner to be root and expect the .create() to
#           actually manage that.
#           THIS WAS WRITTEN PRIMARILY FOR INSTALLATION
#           SCRIPTS THAT EXECUTE AS ROOT !!

Jasata

#! /usr/bin/env python3
#
#   with_identity.py - Jani Tammi <[email protected]>
#
#   Convenient way to assume another user identity for limited work.
#   Created for installation scripts that run as root.
#
import os
import pwd
import grp

Jasata

#! /usr/bin/env python3
#
#   A class to compute the mean, SAMPLE variance, and SAMPLE standard deviation
#   of a stream of data.
#
#   RunningStatistics.py - 2018, Jani Tammi <[email protected]>
#   0.1.0   Initial version.
#
#   Makes use of a method to calculate running variance
#   by B. P. Welford, 1962,

Jasata

#! /usr/bin/env python3
# Snippet for cleaning out configuration file list-values (import configparser).
# For reading/processing configuration file values, performance is not an issue.
# The  key = value  can sometimes look something like:
#
#       files = ,  data.db ,script.py,  ,,  data.db   ,,,
#
# NOTE: Neither of these can deal with quotations (" or ') and thus cannot process
#       list items that need to have the separator (,) in them.
#

Jasata

#! /usr/bin/env python3
# 2019-12-28 Jani Tammi
#
#   Slightly improved DefaultDotDict, using '*' as default value.
#   NOTE:   DefaultDotDict.get('foobar') does NOT return value for key '*'.
#           You still get to define your own default value.
#


class DefaultDotDict(dict):

Jasata

class DefaultDict(dict):
    """Returns DefaultDict.default value for missing key, or raises KeyError if default has not been set."""
    def __missing__(self, key):
        if getattr(self, 'default', None):
            return self.default
        raise KeyError(
            f"Key '{key}' does not exist and default has not been set!"
        )

Jasata

#! /usr/bin/env python2
#
#   ROS 1 "Kinetic Kame" server
#   EOL date at April 2021, but this version uses Python 2.7
#
#   Demo code for Jupyter access, need accesspoints and all the
#   associated data packet handling.
#
from BaseHTTPServer import BaseHTTPRequestHandler, HTTPServer
import json

Jasata

#!/usr/bin/env python3
#
# Simple command line yes/no prompter.
# 2020-04-24 Jani Tammi <[email protected]>
#
#    default = None | "y" | "n"       If and how ENTER is interpreted.
#    echo = False | True              Will the prompt line be appended with selection.
#

def getch():

Jasata

/*
 * TEMPer.c - Simple TEMPer USB temperature meter reader
 * Adapted from https://gist.github.com/artms/5356eafcd1244c6fabc0f735e5de7096
 * Credit: Arturas Moskvinas
 *
 * Adapted to C by Jani Tammi <[email protected]>, 2020-10-11
 *
 */
#include <stdio.h>
#include <stdint.h>