ch10: add nox session for type checking with mypy

cjolowicz · cjolowicz · commit 95b35ecc208e · 2024-06-17T00:23:08.000+02:00
diff --git a/chapter10-using-types-for-safety-and-inspection/noxfile.py b/chapter10-using-types-for-safety-and-inspection/noxfile.py
@@ -56,6 +56,12 @@ def lint(session):
     session.run("pre-commit", "run", *options, *session.posargs)
 
 
+@nox.session(python=["3.12", "3.11", "3.10"])
+def mypy(session: nox.Session) -> None:
+    session.install(".[typing]")
+    session.run("mypy", "src")
+
+
 def install_coverage_pth(session):
     output = session.run(
         "python",
