Done:
https://github.com/PyTables/PyTables/issues/159
I did not understand how to attach a file to a github issue.
Anyway, I produced a pastebin address and attach the unittest here.
Regards,
Daniele
Il 25/06/2012 09:35, Antonio Valentino ha scritto:
Ciao Daniele,
Il giorno Mon, 25 Jun 2012 09:17:00 +0200
Mythsmith <s...@modena1.it> ha scritto:
Hi Anthony,
Shouldn't the close() method also clear the cache? I think a file
should be either opened or closed... Should I file a bug report?
Best regards,
Daniele
The close method also remover the file from the cache if there are no
more references to it
https://github.com/PyTables/PyTables/blob/6fccb7495ba1bc758c7b04960fe1cd392abe9b96/tables/file.py#L2098
Anyway yes, if you have some problem with the file caching system
please file a bug report on github.
Of course test scripts or patches are very welcome.
ciao
Il 21/06/2012 19:23, Anthony Scopatz ha scritto:
Hi Daniele,
This is probably because of the way PyTables caches its file
objects. As a temporary work around, why don't you try clearing the
cache or at least removing this file. The cache is just a
dictionary and it is located at "tables.file._open_files". ie try:
tables.file._open_files.clear()
-or-
del tables.file._open_files.pop["touch.h5"]
Be Well
Anthony
On Thu, Jun 21, 2012 at 10:43 AM, Mythsmith <s...@modena1.it
<mailto:s...@modena1.it>> wrote:
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
"""This test checks that opening an erroneous file leaves a clean cache state.
Eg: a correct file can later be opened even if it is in the same path"""
import unittest
import tables
import os
wpath='err_opening.h5'
class ClosingErroneousFiles(unittest.TestCase):
def setUp(self):
"""Touch a non-hdf5 file"""
f=open(wpath,'w')
f.write('ciao')
f.close()
def tearDown(self):
"""Delete the working file."""
os.remove(wpath)
def test01_Opening(self):
"""Tests the opening of an erroneous file"""
try:
t=tables.openFile(wpath,mode='r')
self.fail("Opening an erroneous file should raise an exception!")
s=t.__str__()
t.close()
except:
pass
def test02_ReOpenCorrect(self):
"""Place a correct hdf5 file in the same path as the erroneous one, and try to open again"""
#Create a correct file
t=tables.openFile('ok.h5',mode='w')
t.close()
# Remove old file
os.remove(wpath)
# Place correct file in old path
os.rename('ok.h5', wpath)
# Try opening again
t=tables.openFile(wpath,mode='w')
s=t.__str__()
print s
if __name__ == '__main__':
unittest.main()------------------------------------------------------------------------------
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