From b4910473b2eb26db7a09a44b8299fa298db85a44 Mon Sep 17 00:00:00 2001
From: Paul Romano <paul.k.romano@gmail.com>
Date: Thu, 2 Jun 2016 16:36:10 -0500
Subject: [PATCH] Throw ImportError if user has h5py 2.6.0.

---
 openmc/particle_restart.py | 5 +++++
 openmc/statepoint.py       | 5 +++++
 openmc/summary.py          | 4 ++++
 openmc/tallies.py          | 4 ++++
 4 files changed, 18 insertions(+)

diff --git a/openmc/particle_restart.py b/openmc/particle_restart.py
index 72bf3ac3de..7a27db2f60 100644
--- a/openmc/particle_restart.py
+++ b/openmc/particle_restart.py
@@ -37,6 +37,11 @@ class Particle(object):
 
     def __init__(self, filename):
         import h5py
+        if h5py.__version__ == '2.6.0':
+            raise ImportError("h5py 2.6.0 has a known bug which makes it "
+                              "incompatible with OpenMC's HDF5 files. "
+                              "Please switch to a different version.")
+
         self._f = h5py.File(filename, 'r')
 
         # Ensure filetype and revision are correct
diff --git a/openmc/statepoint.py b/openmc/statepoint.py
index 14a48e7f6d..0baa631581 100644
--- a/openmc/statepoint.py
+++ b/openmc/statepoint.py
@@ -106,6 +106,11 @@ class StatePoint(object):
 
     def __init__(self, filename, autolink=True):
         import h5py
+        if h5py.__version__ == '2.6.0':
+            raise ImportError("h5py 2.6.0 has a known bug which makes it "
+                              "incompatible with OpenMC's HDF5 files. "
+                              "Please switch to a different version.")
+
         self._f = h5py.File(filename, 'r')
 
         # Ensure filetype and revision are correct
diff --git a/openmc/summary.py b/openmc/summary.py
index 2af9b6be6f..d5259247fe 100644
--- a/openmc/summary.py
+++ b/openmc/summary.py
@@ -26,6 +26,10 @@ class Summary(object):
         # Python API so we'll only try to import h5py if the user actually inits
         # a Summary object.
         import h5py
+        if h5py.__version__ == '2.6.0':
+            raise ImportError("h5py 2.6.0 has a known bug which makes it "
+                              "incompatible with OpenMC's HDF5 files. "
+                              "Please switch to a different version.")
 
         openmc.reset_auto_ids()
 
diff --git a/openmc/tallies.py b/openmc/tallies.py
index 2313a61734..38aa0bf12c 100644
--- a/openmc/tallies.py
+++ b/openmc/tallies.py
@@ -314,6 +314,10 @@ class Tally(object):
 
         if not self._results_read:
             import h5py
+            if h5py.__version__ == '2.6.0':
+                raise ImportError("h5py 2.6.0 has a known bug which makes it "
+                                  "incompatible with OpenMC's HDF5 files. "
+                                  "Please switch to a different version.")
 
             # Open the HDF5 statepoint file
             f = h5py.File(self._sp_filename, 'r')