use isinstance() to determine type rather than [] #1377
Merged
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#1376
Use
isinstance()
to determinetup[0]
type rather thantup[0]==[]
. Whentup
is passed in fromself.w.append(array_ops_compat.hstack(wi))
indeepxde\data\fpde.py, line 474
,tup[0]==[]
can cause the following errors:ValueError: operands could not be broadcast together with shapes (172,) (0,)