Tim Williams <[EMAIL PROTECTED]> wrote:
> You can also do this by holding a file open in write mode until the
> script has finished.
>
> try:
> open('lock.txt','w')
> my_script()
> except:
> #print script is already running
That only works under windows
>>> f=open('lock.txt','w')
>>> g=open('lock.txt','w')
>>> f.write('hi')
>>> g.write('ho')
>>> f.close()
>>> g.close()
>>> open('lock.txt').read()
'ho'
>>>
The best cross platform way to create a lock is creating a directory.
It is atomic on both windows and linux anyway.
try:
os.mkdir("lock")
except OSError:
print "locked!"
else:
try:
do_stuff()
finally:
os.rmdir("lock")
(untested)
--
Nick Craig-Wood <[EMAIL PROTECTED]> -- http://www.craig-wood.com/nick
--
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