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Web development using Python.
You can develop for the web using Django, fast-api && flask
Flask is a Python web-framework, it is a third party library used for web development.
Flask focuses on step-by-step web development.
It is light weight micro-web framework based on two libraries werkzeug WSGI toolkit && Jinja2 templates
Flask is a Python web-framework, it is a third party library used for web development.
Flask focuses on step-by-step web development.
It is light weight micro-web framework based on two libraries werkzeug WSGI toolkit && Jinja2 templates
Before installation of flask, make sure you are in your virtual environment.
pip install virualenv
#activating:Linux
env/bin/activate
#windows
cd env\Scripts\activateWhen you are in your virtual env run:
pip install flask
# or
pip3 install flaskAll things set👍! now we create a hello world app.✨
# import Flask class
from flask import Flask
#instantiate flask app obj
app = Flask(__name__)
# decorator function(routing)
@app.route('/')
def index():
return 'Hello world!'
if __name__ == '__main__':
app.run(debug=True)Go ahead and type this in a text editor save as app.py
The condition checks if the code is a flask app .
The condition checks if the code is a flask app .
if __name__ == '__main__':
app.run()type the following commands in terminal
#first we set the flask_app variable
# Linux
export FLASK_APP=app.run
#window
set FLASK_APP=app.run
# run it
flask runYaaay! 🎉 our hello world is live and running on:
http://127.0.0.1:5000A route is a URL to a location in the browser.
Routes are created with the route() decorator, they handle requests for the flask app.
Routes are created with the route() decorator, they handle requests for the flask app.
@app.route('/')
def index():
return 'Hello world!'This opens the home page in our app.
To render html flask uses Jinja2 templating engine.
from flask import Flask, render_template
@app.route('/about')
def about():
return render_template('about.html')Variables create a dynamic URL route for a flask app, a variable section is marked with angle brackets
The function receives the variable as a keyword argument, Optionally you can specify a converter for a variable
<variable_name>.The function receives the variable as a keyword argument, Optionally you can specify a converter for a variable
<converter:variable_name>@app.route('/age/<int:num>')
def age(num):
return f'<p>This Blog is {num} old.</p>'In this article we have gone through web development with Flask a python web-framework.
In the next article, I'll write on connecting Flask to a database.
Thank you for reading, I'd really love your feedback or guidance.
Be cool, Keep coding!
Be cool, Keep coding!
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