Hi,
I noticed that if I open an erroneous file (eg: empty), then it seems
not possible to completely close it and reopen the same path, even if a
valid file was created in the meanwhile.
The error is:
ValueError: The file 'touch.h5' is already opened. Please close it
before reopening in write mode.
You find a complete example attached.
Regards,
daniele
#!/usr/bin/python
import tables
from traceback import print_exc
import os
print '|| Creating a correct tables file, named ok.h5:'
t=tables.openFile('ok.h5',mode='w')
print 'Created:',t
t.close()
# Touch a file
print '|| Creating an empty file, named touch.h5:'
f=open('touch.h5','w')
f.write('ciao')
f.close()
print 'done'
print '|| Opening the empty file as if it was hdf5...'
try:
t=tables.openFile('touch.h5',mode='r')
print t
except:
print '|| Error while opening empty file as if it was hdf5:'
print_exc()
print '|| Trying to close the erroneous file'
try:
t.close()
print '|| File touch.h5 is now closed'
except:
print '|| Also closing that file causes an exception.'
print_exc()
print '|| Rename the correct hdf5 file as the old empty file path'
os.remove('touch.h5')
os.rename('ok.h5', 'touch.h5')
print '|| Try to open the correct hdf5 file, now renamed as the old empty file:'
t=tables.openFile('touch.h5',mode='w')
try:
print t
except:
print '|| Write mode should overwrite any existing file, instead something of the old empty file remains in the hdf library...'
print_exc()
print 'Done'------------------------------------------------------------------------------
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