Appending data to a CSV file is a common task in data processing. But what if the CSV file doesn’t exist yet? Here’s a step-by-step guide on how to append a dictionary to a non-existent CSV file using Python’s csv module. Prerequisites: 🧑💻 Step 1: Import CSV and OS Python Libraries 🧑💻 Step 2: Check … Read more
Setting up the Environment Before diving into web scraping with Python, set up your environment by installing the necessary libraries. First, install the following libraries: requests, BeautifulSoup, and pandas. These packages play a crucial role in web scraping, each serving different purposes.✨ To install these libraries, click on the previously provided links for a full … Read more
This article shows you how to export a Database Table to a CSV file using MySQL. ℹ️ SQL, an acronym for Structured Query Language, is the language of the Database! This standardized language is used to manage databases, tables and the data they hold. A must-have in the coding world. This language allows coders to … Read more
Problem Formulation and Solution Overview 💡 This article will show you how to delete a line from a file in Python. To make it more interesting, we have the following running scenario: Rivers Clothing has a flat text file, rivers_emps.txt containing employee data. What happens if an employee leaves? They would like you to write … Read more
The article begins by formulating a problem regarding how to extract emails from any website using Python, gives you an overview of solutions, and then goes into great detail about each solution for beginners. At the end of this article, you will know the results of comparing methods of extracting emails from a website. Continue … Read more
Given an image as a .png or .jpeg file. How to convert it to a CSV file in Python? Example image: Convert the image to a CSV using the following steps: Read the image into a PIL.Image object. Convert the PIL.Image object to a 3D NumPy array with the dimensions rows, columns, and RGB values. … Read more
Problem 💬 Challenge: How to convert a Parquet file ‘my_file.parquet’ to a CSV file ‘my_file.csv’ in Python? In case you don’t know what a Parquet file is, here’s the definition: 💡 Info: Apache Parquet is an open-source, column-oriented data file format designed for efficient data storage and retrieval using data compression and encoding schemes to … Read more
Problem Given the following Markdown table stored in ‘my_file.md’: 🐍 Python Challenge: How to convert the Markdown table to a CSV file ‘my_file.csv’? Solution To convert a Markdown table .md file to a CSV file in Python, first read the Markdown table file by using the f.readlines() method on the opened file object f, by … Read more
A not-so-fictious problem: Say, you’ve created a web application that runs on a dedicated Linux server in the cloud. Thousands of users visit your web app and suddenly … it crashes. Your users start complaining, and you lose revenue. More importantly, you bleed credibility by the hour. Your server is down, so what do you … Read more
Problem Formulation and Solution Overview In this article, you’ll learn how to print a string and an integer together in Python. To make it more fun, we have the following running scenario: The Finxter Academy has decided to send its users an encouraging message using their First Name (a String) and Problems Solved (an Integer). … Read more
Problem Formulation and Solution Overview In this article, you’ll learn how to ignore (upper/lower/title) case characters when dealing with Strings in Python. The main reason for ignoring the case of a String is to perform accurate String comparisons or to return accurate search results. For example, the following three (3) Strings are not identical. If … Read more
Given an HTML table (code) in a file or at a given URL. First, load all HTML tables into the Python script by calling Pandas’ pd.read_html() passing the URL of the HTML document. The result is a list of DataFrames, one per HTML table in the document. Second, convert any specific DataFrame to a CSV … Read more