Python excels for data science, AI/ML, automation, and backend development where its readable syntax and massive scientific computing ecosystem shine. JavaScript is essential for any front-end web development and remains strong for full-stack development via Node.js.
For a first language, Python's gentler learning curve and broad applicability make it a common recommendation. For web development specifically, JavaScript is unavoidable given its role as the only language browsers natively execute.
Cantonet Technologies works extensively in both and helps clients choose the right language for each specific part of their technology stack.