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Python is a high-level, interpreted, general-purpose programming language known for its clean syntax and readability. Python files use the .py extension for standard scripts and modules, .pyw for Windows GUI scripts that run without a console window, and .pyi for type stub files used by static type checkers like mypy and Pyright.
Python is widely used in web development (Django, Flask, FastAPI), data science and machine learning (NumPy, Pandas, TensorFlow), automation and scripting, scientific computing, and system administration. Our Online Python Viewer lets you open and inspect Python source files with full syntax highlighting directly in your browser — no IDE or Python installation needed.
Drag and drop your .py, .pyw, or .pyi file into the viewer, or click to browse and select it from your device.
Your Python code is instantly displayed with full syntax highlighting for keywords, strings, comments, decorators, and built-ins.
Copy the code to your clipboard, inspect specific functions or classes, or use it as a quick reference.
.py (standard Python scripts and modules), .pyw (Windows GUI scripts without console), and .pyi (type stub files for static analysis) are all supported.
.py files run with the standard Python interpreter and show a console window on Windows. .pyw files run with pythonw.exe, which suppresses the console window — useful for GUI applications built with tkinter or similar frameworks.
.pyi files are Python type stub files that contain type annotations for modules. They are used by static type checkers (mypy, Pyright) and IDEs to provide type information for libraries that may not have inline annotations.
Yes. Your files are processed locally in your browser or securely on our server and deleted immediately after processing. No code is executed.
No, this is a viewer only. It displays Python code with syntax highlighting but does not execute it. To run Python code, use a local Python installation or an online interpreter.