Python — Intentionally Invalid Match
Intentionally invalid Python match (missing colon) for linters.
match x
case 1:
pass
Specifications
- Language
- python
- Role
- intentionally invalid
- Valid
- false
What is a .py file?
Python (.py) is a plain-text source file for the Python programming language — a dynamically typed, indentation-structured language widely used for scripting, data science, web back-ends, and automation. A .py file is compiled to bytecode and run by the Python interpreter.
How to use this file
Use an example .py file to test syntax highlighters, linters (like flake8 or ruff), formatters (black), tree-sitter grammars, and language-detection or code-editor tooling against known-correct source.
How to use this file for testing
“Python — Intentionally Invalid Match” is a deterministic Novus Examples fixture for Error handling, Code parsing, Editor testing. Deliberately corrupt and invalid files, clearly labelled, for testing how your tool fails.
Documented properties for this file: intentionally invalid · python · intentionally invalid. Compare results against paired or grouped companions on this page when present (clean↔damaged, searchable↔scanned, or format twins) so scores stay reproducible across runs.
Download the file once, keep the path stable in CI or local scripts, and treat the spec table as the contract: dimensions, seeds, field lists, and roles are intentional. Corrupt or invalid samples are labelled as such — expect parsers to fail loudly rather than silently accept them.
This is a short, known-correct source file. Run it through your syntax highlighter, linter, formatter, tree-sitter grammar, or parser, and open it in the in-browser editor to tweak and re-download. Each snippet exercises comments, string escapes, literals, and language keywords.
Code examples
python intentionally-invalid-match.pyRelated files
- pyPython — Intentionally Invalid IndentIntentionally invalid Python indentation for linter / parser error-path tests. Labelled intentionally invalid in title and description.

- cljClojure — Intentionally InvalidIntentionally invalid Clojure (unbalanced forms) for clj-kondo-style tests.

- f90Fortran — Intentionally InvalidIntentionally invalid Fortran for compiler error fixtures.

- goGo — Intentionally InvalidIntentionally invalid Go syntax for gofmt/parser failure tests.

- hsHaskell — Intentionally InvalidIntentionally invalid Haskell (unterminated string) for parser failure tests.

- jsJavaScript — Intentionally Invalid SyntaxIntentionally corrupt JavaScript object literal — labelled invalid for error handling. Labelled intentionally invalid in title and description.

Generated by generation/code_wave_g.py. Free for any use, no attribution required — license.