Online Python IDE: write and run Python in your browser

Free online Python editor and interpreter. Write Python 3 code, press Run and see the output instantly. Your code runs on your own device with Pyodide (WebAssembly), so nothing is sent to a server. NumPy, pandas, Matplotlib and other tested packages load automatically when you import them. Supports multiple files, standard input, downloads and saved projects. New to Python? Start with the Python tutorial or practise with Python exercises.

LessonPython *args and **kwargs: *args collects any extra positional arguments into a tuple and **kwargs collects any extra keyword arguments into a dictionary, so one function can accept a fl… Back to lesson
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