Any web application frequently needs to process received from users. This data can be a query string, form data, and JSON objects (JavaScript Object Notation). Like any other web, the framework allows the user to access that requested data. This article will learn how to build a flask application with three routes to accept the … Read more
Problem Formulation Say, you have a given URL stored as a string in your Python script. You know that if you’d call get url, the server returns a JSON object. How to get the JSON object from a given URL in Python? Solution with urllib and json Modules You can get the JSON object from … Read more
Hey Finxters! In my last article, I showed you how to host your Streamlit/Python web app in the cloud on Heroku. Now, perhaps you thought to yourself, that’s very nice but I need my script (not necessarily a web app, by the way) to run twice a week to load this new data at work, … Read more
Hey Finxters! Have you ever felt surrounded by developers boasting from their latest app in prod hosted in the cloud? Or the need for making yours too but overwhelmed by the technicalities involved? Needed to set up quickly and easily a mini data science demo website without resorting to web developers? Or simply wanting to … Read more
Subtitle: Avoid Hard-Coded Data While Making Your (And Others) Life Easier When the subject of config, or configuration, files comes up there is often confusion on what they are, how to read them, and the benefits that come from their use. In this article, we will cover what config files are before introducing the Python … Read more
Minute 1: Install Dash Type the following command in your terminal/shell. Windows, macOS: Linux, Ubuntu: Minute 2: Create Minimal Dash Project File “app.py” Copy&paste the code into a new file called “app.py” in a folder – with path /path/to/dash_app/app.py: Minute 3: Run Dash App Open a terminal or shell in the /path/to/dash_app/ and run python … Read more
This tutorial shows you how to perform simple HTTP get requests to get an HTML page from a given URL in Python! Problem Formulation Given a URL as a string. How to extract the HTML from the given URL and store the result in a Python string variable? Example: Say, you want to accomplish the … Read more
What is Celery? Celery allows you to scale your application by distributing processing workload among multiple worker machines or processes. Celery uses task queues as units of work. A dedicated worker process monitors those task queues and pulls new work from those if it becomes available. Clients add messages to the task queue and brokers … Read more
In this tutorial, you’ll learn how to open a PDF file in an external PDF reader or the browser, using a simple Python command. There are many variants to this problem, so let’s dive right into the different ones—and their solutions! Method 1: Open PDF Standard Viewer with os.system(path) — With CMD You can open … Read more
This chapter draft from my upcoming book “From One to Zero: Minimalism in Programming” will appear in revised form in 2021 with NoStarch (SanFrancisco). Stay tuned for updates on the book launch: In this chapter, you’ll enter a vital area in computer science that greatly benefits from a minimalistic mindset: design and user experience (UX). … Read more
Summary: To create an interactive web application in a Jupyter Notebook, use the three libraries ipywidgets, voila, and binder. This requires only basic Python programming skills without the need to learn a new framework. There are various Python tools available to create web applications and frontend GUIs. For example, Flask and Django. As useful as … Read more
Problem Formulation: How to perform an HTTP get call in Python? Solution: Use Python’s requests library. This is semantically equivalent to issuing an HTTP get call: http://example.com?param_1=value_1¶m_2=value_2 In fact, you can obtain this exact URL by using the r.url attribute on the request object: You can find the text response by using the r.text attribute … Read more