Print compilation status with --version (#12318)

Resolves #12317 Co-authored-by: hauntsaninja <>
python · Mar 9, 2022 · 4a744b3 · 4a744b3
1 parent 47e2ca8
commit 4a744b3
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/mypy/main.py b/mypy/main.py
@@ -492,9 +492,11 @@ def add_invertible_flag(flag: str,
     general_group.add_argument(
         '-v', '--verbose', action='count', dest='verbosity',
         help="More verbose messages")
+
+    compilation_status = "no" if __file__.endswith(".py") else "yes"
     general_group.add_argument(
         '-V', '--version', action=CapturableVersionAction,
-        version='%(prog)s ' + __version__,
+        version='%(prog)s ' + __version__ + f" (compiled: {compilation_status})",
         help="Show program's version number and exit",
         stdout=stdout)