Commit 0a0258b4 authored by Sebastian Hutschenreuter's avatar Sebastian Hutschenreuter
Browse files


parent b5befab3
......@@ -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)
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