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POpandas HDFStore - how to reopen?
 

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  1. POpandas HDFStore - how to reopen?
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    <p>I created a file by using:</p> <pre><code>store = pd.HDFStore('/home/.../data.h5') </code></pre> <p>and stored some tables using:</p> <pre><code>store['firstSet'] = df1 store.close() </code></pre> <p>I closed down python and reopened in a fresh environment.</p> <p>How do I reopen this file?</p> <p>When I go:</p> <pre><code>store = pd.HDFStore('/home/.../data.h5') </code></pre> <p>I get the following error.</p> <pre><code>Traceback (most recent call last): File "&lt;stdin&gt;", line 1, in &lt;module&gt; File "/misc/apps/linux/python-2.6.1/lib/python2.6/site-packages/pandas-0.10.0-py2.6-linux-x86_64.egg/pandas/io/pytables.py", line 207, in __init__ self.open(mode=mode, warn=False) File "/misc/apps/linux/python-2.6.1/lib/python2.6/site-packages/pandas-0.10.0-py2.6-linux-x86_64.egg/pandas/io/pytables.py", line 302, in open self.handle = _tables().openFile(self.path, self.mode) File "/apps/linux/python-2.6.1/lib/python2.6/site-packages/tables/file.py", line 230, in openFile return File(filename, mode, title, rootUEP, filters, **kwargs) File "/apps/linux/python-2.6.1/lib/python2.6/site-packages/tables/file.py", line 495, in __init__ self._g_new(filename, mode, **params) File "hdf5Extension.pyx", line 317, in tables.hdf5Extension.File._g_new (tables/hdf5Extension.c:3039) tables.exceptions.HDF5ExtError: HDF5 error back trace File "H5F.c", line 1582, in H5Fopen unable to open file File "H5F.c", line 1373, in H5F_open unable to read superblock File "H5Fsuper.c", line 334, in H5F_super_read unable to find file signature File "H5Fsuper.c", line 155, in H5F_locate_signature unable to find a valid file signature End of HDF5 error back trace Unable to open/create file '/home/.../data.h5' </code></pre> <p>What am I doing wrong here? Thank you.</p>
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    1. PTQuestion
    1. USAndy Hayden
    1. USuser1911092
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. VO
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      1. POpandas HDFStore - how to reopen?
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
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      1. POpandas HDFStore - how to reopen?
      1. This table or related slice is empty.
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    3. VO
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      1. POpandas HDFStore - how to reopen?
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      1. VTUpMod
    1. COCan you try upgrading the 0.10.1, I think there was some attention to this between 0.10.0 and .1. (This seems to work without exception on my system.)
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      1. POpandas HDFStore - how to reopen?
      1. USAndy Hayden
    2. COWill do. Is there a difference between originally creating the file and accessing it in the future? Or is pd.HDFStore doing the same thing (creating if it doesn't exist and opening if it does?)
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      1. POpandas HDFStore - how to reopen?
      1. USuser1911092
    3. CONo, it should work exactly as you say, and so your code should work :). I think if there were an issue with your installation of HDF5 it would sulk before that point, can't think what it could be besides updating!
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      1. POpandas HDFStore - how to reopen?
      1. USAndy Hayden
 

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