Sunday, August 25, 2013

Scratching the surface with flask

Python is a strange beast. These days, I am trying my hand at django and right now am trying to do a bit of development in flask. As I was doing web apps in java/ruby before this, it is quite natural for me to compare django with rails and flask with sinatra.
However, I find flask a little bit more verbose than sinatra as it has a little bit more verbose metadata. Check out the following yourself:
from flask import Flask              require 'sinatra'
app = Flask(__name__)

@app.route("/")                      get '/' do
def hello():
  return "Hello World!"                "Hello World!"
 if __name__ == "__main__":

To start off with, one of the nice feature is the presence of reloader by default in flask. If I saved the python file with syntax errors, the program crashed in the terminal. This is different with sinatra as it needs to be restarted (sinatra-reloader is not present as a default). The template engine, jinja (rhymes with ninja) is reminiscent of mustache template to an extent. However, instead of yielding within a master template, all the child templates must extend the master template itself.
So far, I have created a simple application that was previously working in sinatra in little over an hour. My initial experience is a tad disappointing with nothing really worthy of a mention. However, it can be deployed to platforms like google app engine that support python or heroku which pretty much supports all open source platforms now.

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