# python > Python language interpreter. > More information: . - Start a REPL (interactive shell): `python` - Execute a specific Python file: `python {{path/to/file.py}}` - Execute a specific Python file and start a REPL: `python -i {{path/to/file.py}}` - Execute a Python expression: `python -c "{{expression}}"` - Run the script of the specified library module: `python -m {{module}} {{arguments}}` - Install a package using `pip`: `python -m pip install {{package}}` - Interactively debug a Python script: `python -m {{pdb}} {{path/to/file.py}}` - Start the built-in HTTP server on port 8000 in the current directory: `python -m {{http.server}}`