NF - wrapstruct == non wrapstruct returns False

It was previously raising AttributeErrors trying to find the parts to
compare.

Author: matthew-brett

nibabel/tests/test_wrapstruct.py

@@ -138,6 +138,9 @@ def test__eq__(self):
         # Check byteswapping maintains equality
         hdr3 = hdr2.as_byteswapped()
         assert_equal(hdr2, hdr3)
+        # Check comparing to funny thing says no
+        assert_not_equal(hdr1, None)
+        assert_not_equal(hdr1, 1)
 
     def test_to_from_fileobj(self):
         # Successful write using write_to

nibabel/wrapstruct.py

@@ -289,8 +289,13 @@ def __eq__(self, other):
         '''
         this_end = self.endianness
         this_bb = self.binaryblock
-        if this_end == other.endianness:
-            return this_bb == other.binaryblock
+        try:
+            other_end = other.endianness
+            other_bb = other.binaryblock
+        except AttributeError:
+            return False
+        if this_end == other_end:
+            return this_bb == other_bb
         other_bb = other._structarr.byteswap().tostring()
         return this_bb == other_bb