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Groups > comp.lang.python > #68277

Re: Save to a file, but avoid overwriting an existing file

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This seems to be an application-level decision. If so, in your
application, why not just check to see if the file exists, and
implement whatever workaround you deem correct for your needs? For
example (to choose a simple, but rather silly, file naming strategy):

fname = "x"
while os.path.exists(fname):
    fname = "%s.%f" % (fname, random.random())
fd = open(fname, "w")

It's clearly not going to be safe from race conditions, but I leave
solving that problem as an exercise for the reader.

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Save to a file, but avoid overwriting an existing file zoom <zoom@yahoo.com> - 2014-03-12 13:29 +0100
  Re: Save to a file, but avoid overwriting an existing file Skip Montanaro <skip@pobox.com> - 2014-03-12 07:37 -0500
  Re: Save to a file, but avoid overwriting an existing file Tim Chase <python.list@tim.thechases.com> - 2014-03-12 08:33 -0500
  Re:Save to a file, but avoid overwriting an existing file Dave Angel <davea@davea.name> - 2014-03-12 14:22 -0400
  Re: Save to a file, but avoid overwriting an existing file Emile van Sebille <emile@fenx.com> - 2014-03-12 12:38 -0700
  Re: Save to a file, but avoid overwriting an existing file Cameron Simpson <cs@zip.com.au> - 2014-03-13 09:19 +1100
  Re: Save to a file, but avoid overwriting an existing file Mark Lawrence <breamoreboy@yahoo.co.uk> - 2014-03-12 23:04 +0000
  Re: Save to a file, but avoid overwriting an existing file Ben Finney <ben+python@benfinney.id.au> - 2014-03-13 11:22 +1100

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