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pip install black

black . --target-version=py36 --check --quiet

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BMI is weight divided by height in the power of two.

bmi = weight / height**2

Body Mass Index Scale

• Underweight: less than 18.5
• Normal weight: 18.5 - 25

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Expose local port to the world

ngrok

https://ngrok.com/

./ngrok http 8000

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Remove old PostGIS Installation

The first step is to remove older version of PostGIS if any.

sudo apt-get purge postgis

Setup repository

wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | sudo apt-key add -
sudo sh -c 'echo "deb http://apt.postgresql.org/pub/repos/apt/ trusty-pgdg main" >> /etc/apt/sources.list.d/postgresql.list'

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https://www.saltycrane.com/blog/2017/08/docker-cheat-sheet/

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Install pgeocode package:

pip install pgeocode

Find the geo coordinates by postal code:

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Tutorials

• Scrapy Selectors on tutorialspoint.com

Code examples

The scrapy way of iterating through the response.

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from django.conf.urls import url

from views import sample_api_view

urlpatterns = [
    url(
        r'^sample-api-view/$',
        sample_api_view,
        name="sample_api_view"
    ),

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package main

import (
	"fmt"
	"os"
	"os/exec"
	"strconv"
)

func main() {

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sudo apt-get install libasound-dev portaudio19-dev libportaudio2 libportaudiocpp0
sudo apt-get install ffmpeg libav-tools
sudo pip install pyaudio