# pycodestyle > A tool to check Python code against PEP 8 style conventions. - Check the style of a single file: `pycodestyle {{file.py}}` - Check the style of multiple files: `pycodestyle {{file1.py}} {{file2.py}} {{file3.py}}` - Show only the first occurrence of an error: `pycodestyle --first {{file.py}}` - Show the source code for each error: `pycodestyle --show-source {{file.py}}` - Show the specific PEP 8 text for each error: `pycodestyle --show-pep8 {{file.py}}`