check if decode is available before calling it

xsocs/gui/project/Hdf5Nodes.py

@@ -59,7 +59,9 @@ def getNodeClass(nodeType, attrs=None):
         for key, value in attrs.items():
             info = _registeredAttributes.get(key)
             if info:
-                klass = info.get(value.decode())
+                if hasattr(value, 'decode'):
+                    value = value.decode()
+                klass = info.get(value)
                 if klass:
                     break
     if not klass:
@@ -291,7 +293,7 @@ class H5DatasetNode(H5Base):
             ndims = len(item.shape)
             if ndims == 0:
                 data = item[()]
-                if isinstance(data, (np.string_, bytes_type)):
+                if hasattr(data, 'decode'):
                     text = data.decode().replace('\n', ' ')
                 else:
                     text = str(data)

xsocs/gui/project/ProjectItem.py

@@ -59,10 +59,10 @@ def projectItemFactory(h5File, h5Path, mode=None):
     klass = None
     with h5py.File(h5File, mode='r') as h5f:
         attrs = h5f[h5Path].attrs
-        # For some reason attrs.get sometimes fails,
-        # using "in" seems a bit more robust.
         if 'XsocsClass' in attrs:
-            xsocsClass = attrs['XsocsClass'].decode()
+            xsocsClass = attrs['XsocsClass']
+            if hasattr(xsocsClass, 'decode'):
+                xsocsClass = xsocsClass.decode()
             klass = getItemClass(xsocsClass)
         del attrs