Name
tempnam, tmpnam
Synopsis
tempnam(dir
=None,prefix
=None) tmpnam( )
Returns an absolute path usable as the name of a new temporary file.
If dir
is None
, the
path uses the directory normally used for temporary files on the
current platform; otherwise the path uses
dir
. If prefix
is not None
, it should be a short string to be
prefixed to the temporary file’s name.
tempnam
never returns the name of any already
existing file. Your program must create the temporary file, use the
file, and remove the file when done, as in the following snippet:
import os def work_on_temporary_file(workfun): nam = os.tempnam( ) fil = open(nam, 'rw+') try: workfun(fil) finally: fil.close( ) os.remove(nam)
tmpnam
is a synonym for
tempnam
. However, tmpnam
does
not accept arguments, and always behaves like
tempnam(None,None)
. tempnam
and
tmpnam
are potential weaknesses in your
program’s security, and recent versions of Python
emit a warning the first time your program calls these functions to
alert you to this fact. See Chapter 17 for
information about ways in which your program can interact with
warnings.
Get Python in a Nutshell now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.