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#!/bin/bash

# Remove proxy settings for various protocols
unset http_proxy
unset https_proxy
unset ftp_proxy
unset rsync_proxy

# Remove proxy for apt (if exists)
sudo rm -f /etc/apt/apt.conf.d/99proxy

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In [2]: from solid_oidc_client import SolidOidcClient, MemStore
   ...: solid_oidc_client = SolidOidcClient(storage=MemStore())
   ...: import requests

In [4]: issuer = 'https://login.inrupt.com/'
   ...: redirect_url = 'http://localhost:3333/oauth/callback'
   ...: solid_oidc_client.register_client(issuer, [redirect_url])

In [5]: login_url = solid_oidc_client.create_login_uri('/', redirect_url)
   ...: print(login_url)

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package org.example;

import java.io.File;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import java.nio.file.Files;
import java.nio.file.Path;

public class PlayPath {

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import com.google.gson.Gson;
import com.google.gson.JsonElement;
import java.io.ByteArrayInputStream;
import java.io.InputStreamReader;
import org.junit.jupiter.api.Test;

/**
 * Convert Json from/to object/tree/inputstream/reader/file with Gson in Java
 * 
 * ref https://www.javadoc.io/doc/com.google.code.gson/gson/2.9.0/com.google.gson/com/google/gson/Gson.html

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import logging
from typing import Iterable, Dict, BinaryIO

import boto3
from boto3.s3.transfer import TransferConfig
from botocore.config import Config
from botocore.exceptions import ClientError

KB = 1024
MB = KB * KB

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In 30mins, I will address crucial parts of implementing Solid in Python, so attendees can understand how to build a decentralized web application with Python and get the benefits of this promising architecture.

Overview: why we need decentralized web architecture and what does it look like in a Solid way?

In classical web architecture, application and data are bundled together, hence user data are naturally owned by service providers. This causes security, privacy, interoperability, and many other well-known issues for both users and service providers.

Service providers need to pay additional responsibility to protect user data in the scenario. Moreover, users cannot fully control and migrate their data without additional mechanisms provided by the service providers (GDPR tries to address this in a nontechnical way.)

With Solid, all personal data is stored in a data repository named Pod controlled by users. That could be set up on a user's server at home, or provided by a data storage supplier chos

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// https://github.com/rdfjs/N3.js/

import {Parser, StreamParser, Writer} from "n3";
import * as fs from "fs";
import {DataFactory} from 'n3';
import {Writable} from 'stream';

function fromQualsToAString() {
    const writer = new Writer({prefixes: {c: 'http://example.org/cartoons#'}});
    const {namedNode, literal, defaultGraph, quad} = DataFactory;

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def gen():
    a = range(5)
    for x in a:
        yield x
        
x = gen() # instanlize

x.__next__() # get next
Out[36]: 0
next(x) # alternative way

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18.04 
apt install python3-pip

16.04
sudo apt-get install vim htop nmon ngrep iftop tmux dnsmasq curl ifstat iperf httpie python-virtualenv build-essential

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# replace /sys/class/leds/led0/trigger with /sys/class/leds/led0 while on Raspberry Pi 2 model B


def read_trigger() -> str:
    with open('/sys/class/leds/led0/trigger', 'r') as trigger:
        return trigger.read()

org_trigger = read_trigger()
def disable_trigger():
    with open('/sys/class/leds/led0/trigger', 'w') as trigger: