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Re: file locked for writing

P: n/a
En Tue, 13 May 2008 11:57:03 -0300, Dmitry Teslenko <dt*******>
I use some script in python 2.5 from vim editor (it has python
bindings) that updates some file
and then launches another program (ms visual studio, for example) to
do something with updated file.
I faced problem when updated file is locked for writing until vim
editor is closed.

launch vim -update file -launch msvc -file locked
launch vim -update file -launch msvc -close vim -file locked
launch vim -update file --close vim -launch msvc -file okay

Update code is something like that:

backup_file_name = '<some file name>'
with open(backup_file_name, 'w') as backup_file:
input = sax.make_parser()
output = saxutils.XMLGenerator(backup_file, 'cp1252')
filter = __vcproj_config_filter('<updated file name>', input, output)
filter.parse('<updated file name>')
shutil.copyfile(backup_file_name, '<updated file name>')

__vcproj_config_filter is a descent of a XMLFilterBase; it substitutes
some attributes in xml file and that's all.
must be noted that __vcproj_config_filter instance holds reference to
output (sax xml parser) object.
Is the code above contained in a function? So all references are released
upon function exit?
If not, you could try using: del input, output, filter
That should release all remaining references to the output file, I
presume. Or locate the inner reference to the output file
(filter.something perhaps?) and explicitely close it.

Gabriel Genellina

Jun 27 '08 #1
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