Basic Operators

Concepts covered: pyArithmetic

Operators are symbols that perform operations on values. Python supports several categories of operators, each serving a specific purpose in your code. Arithmetic Operators Arithmetic operators perform mathematical calculations. Addition, subtraction, multiplication, and division work as you would expect. Comparison Operators Operator precedence in Python follows the standard mathematical order. Multiplication and division are evaluated before addition and subtraction unless parentheses override the order.

About This Interactive Section

This section is part of the Python Foundations: Beginner lesson on DataDriven, a free data engineering interview prep platform. Each section includes explanations, worked examples, and hands-on code challenges that execute in real time. SQL queries run against a live PostgreSQL database. Python runs in a sandboxed Docker container. Data modeling problems validate against interactive schema canvases. All content is framed around what data engineering interviewers actually test at companies like Meta, Google, Amazon, Netflix, Stripe, and Databricks.

How DataDriven Lessons Work

DataDriven combines four interview rounds (SQL, Python, Data Modeling, Pipeline Architecture) with adaptive difficulty and spaced repetition. Easy problems get harder as you improve. Weak concepts resurface until you master them. Your readiness score tracks progress across every topic interviewers test. Every lesson section ends with problems you solve by writing and running real code, not by picking multiple-choice answers.