WIP: Fix dtype creation fail

Author: mattjala

h5pyd/_hl/dataset.py

@@ -36,12 +36,10 @@
 def readtime_dtype(basetype, names):
     """Make a NumPy dtype appropriate for reading"""
     # Check if basetype is the special case for storing complex numbers
-    if (
-        basetype.names is not None
-        and basetype.names == ("r", "i")
-        and all(dt.kind == "f" for dt, off in basetype.fields.values())
-        and basetype.fields["r"][0] == basetype.fields["i"][0]
-    ):
+    is_complex_basetype = basetype.names is not None and basetype.names == ("r", "i")
+    is_complex_basetype = is_complex_basetype and all(dt.kind == "f" for dt, off in basetype.fields.values())
+    is_complex_basetype = is_complex_basetype and basetype.fields["r"][0] == basetype.fields["i"][0]
+    if is_complex_basetype:
         itemsize = basetype.itemsize
         if itemsize == 16:
             return numpy.dtype(numpy.complex128)

h5pyd/_hl/h5type.py

@@ -860,7 +860,7 @@ def createDataType(typeItem):
         dtRet = np.dtype(dtName)
         return dtRet  # return predefined type
 
-    if isinstance(typeItem, dict):
+    if type(typeItem) is not dict:
         raise TypeError("invalid type")
 
     if 'class' not in typeItem: