159 lines
7.1 KiB
Markdown
159 lines
7.1 KiB
Markdown
+++
|
||
title = "The Story Behind cmw"
|
||
author = ["Elia el Lazkani"]
|
||
date = 2019-08-31
|
||
lastmod = 2019-08-31
|
||
tags = ["python", "development"]
|
||
categories = ["misc"]
|
||
draft = false
|
||
+++
|
||
|
||
A few days ago, [Kushal Das](https://kushaldas.in) shared a curl command.
|
||
|
||
The command was as follows:
|
||
|
||
```text
|
||
$ curl https://wttr.in/
|
||
```
|
||
|
||
I, obviously, was curious.
|
||
I ran it and it was interesting.
|
||
So it returns the weather right ? Pretty cool huh!
|
||
|
||
<!--more-->
|
||
|
||
|
||
## The interest {#the-interest}
|
||
|
||
That got me interested to learn how does this work exactly.
|
||
|
||
|
||
## The investigation {#the-investigation}
|
||
|
||
I looked at [https://wttr.in/](https://wttr.in/) and it seemed to have a GitHub [link](https://github.com/chubin/wttr.in) and a repository.
|
||
That is very interesting.
|
||
This is a Python application, one can tell by the code or if you prefer the GitHub bar at the top.
|
||
|
||
Anyway, one can also tell that this is a [Flask](https://palletsprojects.com/p/flask/) application from the following code in the bin/srv.py.
|
||
|
||
```python
|
||
from flask import Flask, request, send_from_directory
|
||
APP = Flask(__name__)
|
||
```
|
||
|
||
By reading the README.md of the repository one can read.
|
||
|
||
> wttr.in uses [wego](http://github.com/schachmat/wego) for
|
||
> visualization and various data sources for weather forecast
|
||
> information.
|
||
|
||
Let's jump to the _wego_ repository then.
|
||
|
||
_wego_ seems to be a command line application to graph the weather in the terminal.
|
||
|
||
Great, so what I did with [cmw](https://gitea.project42.io/Elia/cmw) is already done in Go and API'fied by a different project.
|
||
|
||
My answer to that accusation is obviously this post.
|
||
|
||
|
||
## The idea {#the-idea}
|
||
|
||
I played a bit more with [https://wttr.in/](https://wttr.in/) and I found it to an interesting API.
|
||
I am trying to work on my python development foo so to me that was a perfect little project to work on.
|
||
From my perspective this was simply an API and I am to consume it to put it back in my terminal.
|
||
|
||
|
||
## The work {#the-work}
|
||
|
||
The beginning work was very rough and hidden away in a private repository and was moved later [here](https://gitea.project42.io/Elia/cmw).
|
||
The only thing left from that work is the `--format` argument which allows you full control over what gets sent.
|
||
But again, let's not forget what the real purpose of this project was.
|
||
So I decided to make the whole API as accessible as possible from the command line tool I am writing.
|
||
|
||
```text
|
||
$ cmw --help
|
||
usage: cmw [-h] [-L LOCATION] [-f FORMAT] [-l LANG] [-m] [-u] [-M] [-z] [-o]
|
||
[-w] [-A] [-F] [-n] [-q] [-Q] [-N] [-P] [-p] [-T] [-t TRANSPARENCY]
|
||
[--v2] [--version]
|
||
|
||
Get the weather!
|
||
|
||
optional arguments:
|
||
-h, --help show this help message and exit
|
||
-L LOCATION, --location LOCATION
|
||
Location (look at epilog for more information)
|
||
-f FORMAT, --format FORMAT
|
||
Query formatting
|
||
-l LANG, --lang LANG The language to use
|
||
-m, --metric Units: Metric (SI) (default outside US)
|
||
-u, --uscs Units: USCS (default in US)
|
||
-M, --meter-second Units: Show wind speed in m/s
|
||
-z, --zero View: Only current weather
|
||
-o, --one View: Current weather & one day
|
||
-w, --two View: Current weather & two days
|
||
-A, --ignore-user-agent
|
||
View: Force ANSI output format
|
||
-F, --follow-link View: Show the 'Follow' line from upstream
|
||
-n, --narrow View: Narrow version
|
||
-q, --quiet View: Quiet version
|
||
-Q, --super-quiet View: Super quiet version
|
||
-N, --no-colors View: Switch terminal sequences off
|
||
-P, --png PNG: Generate PNG file
|
||
-p, --add-frame PNG: Add frame around output
|
||
-T, --mid-transparency
|
||
PNG: Make transparency 150
|
||
-t TRANSPARENCY, --transparency TRANSPARENCY
|
||
PNG: Set transparency between 0 and 255
|
||
--v2 v2 interface of the day
|
||
--version show program's version number and exit
|
||
|
||
Supported Location Types
|
||
------------------------
|
||
City name: Paris
|
||
Unicode name: Москва
|
||
Airport code (3 letters): muc
|
||
Domain name: @stackoverflow.com
|
||
Area code: 94107
|
||
GPS coordinates: -78.46,106.79
|
||
|
||
Special Location
|
||
----------------
|
||
Moon phase (add ,+US
|
||
or ,+France
|
||
for these cities): moon
|
||
Moon phase for a date: moon@2016-10-25
|
||
|
||
Supported languages
|
||
-------------------
|
||
|
||
Supported: af da de el et fr fa hu id it nb nl pl pt-br ro ru tr uk vi
|
||
```
|
||
|
||
```text
|
||
$ cmw --location London --lang nl --one
|
||
Weerbericht voor: London
|
||
|
||
\ / Zonnig
|
||
.-. 20 °C
|
||
― ( ) ― → 19 km/h
|
||
`-’ 10 km
|
||
/ \ 0.0 mm
|
||
┌─────────────┐
|
||
┌──────────────────────────────┬───────────────────────┤ za 31 aug ├───────────────────────┬──────────────────────────────┐
|
||
│ 's Ochtends │ 's Middags └──────┬──────┘ 's Avonds │ 's Nachts │
|
||
├──────────────────────────────┼──────────────────────────────┼──────────────────────────────┼──────────────────────────────┤
|
||
│ \ / Gedeeltelijk b…│ \ / Gedeeltelijk b…│ Bewolkt │ \ / Gedeeltelijk b…│
|
||
│ _ /"".-. 21 °C │ _ /"".-. 23..24 °C │ .--. 20 °C │ _ /"".-. 18 °C │
|
||
│ \_( ). ↗ 12-14 km/h │ \_( ). ↗ 18-20 km/h │ .-( ). ↗ 20-25 km/h │ \_( ). → 16-19 km/h │
|
||
│ /(___(__) 10 km │ /(___(__) 10 km │ (___.__)__) 10 km │ /(___(__) 10 km │
|
||
│ 0.0 mm | 0% │ 0.0 mm | 0% │ 0.0 mm | 0% │ 0.0 mm | 0% │
|
||
└──────────────────────────────┴──────────────────────────────┴──────────────────────────────┴──────────────────────────────┘
|
||
Locatie: London [51.509648,-0.099076]
|
||
```
|
||
|
||
|
||
## Conclusion {#conclusion}
|
||
|
||
All I got to say in conclusion is that it was a lot of fun working on [cmw](https://gitea.project42.io/Elia/cmw) and I learned a lot.
|
||
I'm not going to publish the package on [PyPI](https://pypi.org/) because seriously, what's the point.
|
||
But if you are interested in making changes to the repository, make an MR.
|