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Author vstinner
Recipients giampaolo.rodola, tarek, vstinner
Date 2010-05-27.09:58:53
SpamBayes Score 0.025128856
Marked as misclassified No
Message-id <>
Begin by removing the dest file is maybe not the safer approach :-) Here is a new try: begin by renaming the dest file to a new file.

# use maybe a PRNG instead of a dummy counter or tempfile
def _create_old_filename(filename):
   old = filename + '.old'
   index = 2
   while os.path.exists(old):
      old = filename + '-%s.old' % index
      index += 1
   return old

if in ('nt', 'ce'):
   def atomic_rename(src, dst):
      if os.path.exists(dst):
         old = _create_old_filename(dst)
         rename(dst, old)
         rename(src, dst)
         rename(src, dst)
   atomic_rename = os.rename

What can we do if "rename(src, dst)" fails?
Date User Action Args
2010-05-27 09:58:56vstinnersetrecipients: + vstinner, giampaolo.rodola, tarek
2010-05-27 09:58:56vstinnersetmessageid: <>
2010-05-27 09:58:53vstinnerlinkissue8828 messages
2010-05-27 09:58:53vstinnercreate