title: h5py: IOError: unable to open file (File accessibilty: Unable to open file)
body: <p>I have a problem with opening a hdf5 database in python working on an ubuntu-system. The hdf5-file was created with <code>with h5py.File('abs_path','w') as file_hdf5:</code> so it should be closed after leaving the <code>with</code>-scope. It also worked to create it with</p>
  
  <pre><code>file_hdf5 = h5py.File('abs_path','w')
  #some changes
  file_hdf5.close()
  </code></pre>
  
  <p>I checked the database with <code>hdfview</code> tool and everything looked fine, so seems to be successfully created.
  But some code lines later I try to open the hdf5 database with</p>
  
  <pre><code>file_hdf5 = h5py.File('abs_path','r')
  </code></pre>
  
  <p>and it failed with  </p>
  
  <pre><code>File "h5py/h5f.pyx", line 71, in h5py.h5f.open (h5py/h5f.c:1709)  
  IOError: unable to open file (File accessibilty: Unable to open file)
  </code></pre>
  
  <p>Also</p>
  
  <pre><code>with h5py.File('abs_path','r') as file_hdf5:
  </code></pre>
  
  <p>is failing with the same error.<br>
  Has somebody an idea how to solve that problem?</p>