unparser: Don't put unnecessary parentheses on class declarations

Backport of * 25160cdc47
2021-12-23 08:26:55 -08:00
parent ff5e73d6eb
commit 0776c3b4d6
1 changed files with 1 additions and 1 deletions
--- a/lib/spack/spack/util/unparse/unparser.py
+++ b/lib/spack/spack/util/unparse/unparser.py
@@ -415,7 +415,7 @@ def _ClassDef(self, t):
            self.dispatch(deco)
        self.fill("class " + t.name)
        if six.PY3:
-            with self.delimit("(", ")"):
+            with self.delimit_if("(", ")", condition=t.bases or t.keywords):
                comma = False
                for e in t.bases:
                    if comma: