We will learn, with this explanation, what the url_for() function does and how we can create a dynamic URL in Flask. We will also learn how we can use url_for() inside the template.
Here you import theFlaskclass, which you use to create a Flask application instance calledapp. You import theMongoClientwhich you use to create a client object for a MongoDB instance calledclient, which allows you to connect and interact with your MongoDB server. When you instantiate theMongoC...
In this step, you’ll create a database calledflask_dband a database user calledsammyfor your Flask application. During the Postgres installation, an operating system user namedpostgreswas created to correspond to thepostgresPostgreSQL administrative user. You need to use this user to perform ...
Create a new Flask project for this tutorial. We'll create a basic app that returns "Hello World" with requests to the / endpoint: from flask import Flask # Creating the instance of the class Flask app = Flask(__name__) # Using the decorator to create the URL for the web application...
Then, we create a simple flask application with a dependency on the slow 3rd party API: # flask_app/app.pyimportosimportrequestsfromflaskimportFlask,requestapi_port=os.environ['PORT_API']api_url=f'http://slow_api:{api_port}/'app=Flask(__name__)@app.route('/')defindex():delay=float...
For example, you can simply view the status of the response code by accessing .status_code: print(response.status_code) >>> 200 That’s not all. You can use Response instance in a conditional expression. It will evaluate to True if the status code was between 200 and 400, and False ...
And this is handy for us because if it is done with our browser we can find it. Let’s explore how this works in more detail. How to see whether a website uses an API Let’s create a little sandbox to demonstrate how it works. We can use Flask to make a simple internal API ...
Then, we set up our app routes in app.py: app.py from flask import Flask, render_template, request, redirect, session, url_for app = Flask(__name__) app.secret_key = 'a_super_secret_key!' # you don't need to replace this @app.route('/') def index(): return render_templat...
We must import the above libraries,Flask,request,redirect, andurl_for. Without importing these, we won’t be able to use any of the functions that we have used in this code. According to this code, therequestwill help us request a name to create the new website, and theredirectwill al...
In the new folder, create a Python environment for Flask application and also activate it to use the application: $python3-mvenv venv&&sourcevenv/bin/activate When the Python environment is activated, we will use “pip” to install the Python package of Flask: ...