X-Git-Url: https://git.madduck.net/etc/vim.git/blobdiff_plain/544ea9c217cad9459d7b60665db787e94b52f93d..9938c92fd72deda1156aca79946d7996a5365eaa:/black.py

diff --git a/black.py b/black.py
index ff4f098..b3f387a 100644
--- a/black.py
+++ b/black.py
@@ -296,6 +296,12 @@ def read_pyproject_toml(
     if not config:
         return None
 
+    target_version = config.get("target_version")
+    if target_version is not None and not isinstance(target_version, list):
+        raise click.BadOptionUsage(
+            "target-version", f"Config key target-version must be a list"
+        )
+
     default_map: Dict[str, Any] = {}
     if ctx.default_map:
         default_map.update(ctx.default_map)