fix

0a0258b4 · Sebastian Hutschenreuter · b5befab3 · 0a0258b4
Commit 0a0258b4 authored Oct 12, 2018 by Sebastian Hutschenreuter
Hide whitespace changes
Inline Side-by-side

Showing with 1 addition and 1 deletion

nifty5/operators/operator.py nifty5/operators/operator.py +1 -1

No files found.
--- a/nifty5/operators/operator.py
+++ b/nifty5/operators/operator.py
@@ -30,7 +30,7 @@ class Operator(NiftyMetaBase()):
            s = "The operator's and field's domains don't match."
            from ..domain_tuple import DomainTuple
            from ..multi_domain import MultiDomain
-            if not isinstance(dom_op, [DomainTuple, MultiDomain]):
+            if not isinstance(dom_op, (DomainTuple, MultiDomain,)):
                s += " Your operator's domain is neither a `DomainTuple`" \
                     " nor a `MultiDomain`."
            raise ValueError(s)