Update cheatsheets

pytest

@@ -0,0 +1,33 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# pytest
+
+> Run Python tests.
+> More information: <https://docs.pytest.org/>.
+
+- Run tests from specific files:
+
+`pytest {{path/to/test_file1.py path/to/test_file2.py ...}}`
+
+- Run tests with names matching a specific [k]eyword expression:
+
+`pytest -k {{expression}}`
+
+- Exit as soon as a test fails or encounters an error:
+
+`pytest --exitfirst`
+
+- Run tests matching or excluding markers:
+
+`pytest -m {{marker_name1 and not marker_name2}}`
+
+- Run until a test failure, continuing from the last failing test:
+
+`pytest --stepwise`
+
+- Run tests without capturing output:
+
+`pytest --capture=no`