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Patch #1537850: tempfile.NamedTemporaryFile now has a "delete" parameter

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which can be set to False to prevent the default delete-on-close
behavior.
This commit is contained in:
Georg Brandl 2007-03-13 18:31:49 +00:00
parent 6c104f6906
commit 35ef9c19fe
5 changed files with 37 additions and 9 deletions
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15
Lib/tempfile.py
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@ -372,10 +372,11 @@ class _TemporaryFileWrapper:
remove the file when it is no longer needed.
"""
def __init__(self, file, name):
def __init__(self, file, name, delete=True):
self.file = file
self.name = name
self.close_called = False
self.delete = delete
def __getattr__(self, name):
file = self.__dict__['file']
@ -400,23 +401,25 @@ class _TemporaryFileWrapper:
if not self.close_called:
self.close_called = True
self.file.close()
self.unlink(self.name)
if self.delete:
self.unlink(self.name)
def __del__(self):
self.close()
def NamedTemporaryFile(mode='w+b', bufsize=-1, suffix="",
prefix=template, dir=None):
prefix=template, dir=None, delete=True):
"""Create and return a temporary file.
Arguments:
'prefix', 'suffix', 'dir' -- as for mkstemp.
'mode' -- the mode argument to os.fdopen (default "w+b").
'bufsize' -- the buffer size argument to os.fdopen (default -1).
'delete' -- whether the file is deleted on close (default True).
The file is created as mkstemp() would do it.
Returns an object with a file-like interface; the name of the file
is accessible as file.name. The file will be automatically deleted
when it is closed.
when it is closed unless the 'delete' argument is set to False.
"""
if dir is None:
@ -429,12 +432,12 @@ def NamedTemporaryFile(mode='w+b', bufsize=-1, suffix="",
# Setting O_TEMPORARY in the flags causes the OS to delete
# the file when it is closed. This is only supported by Windows.
if _os.name == 'nt':
if _os.name == 'nt' and delete:
flags |= _os.O_TEMPORARY
(fd, name) = _mkstemp_inner(dir, prefix, suffix, flags)
file = _os.fdopen(fd, mode, bufsize)
return _TemporaryFileWrapper(file, name)
return _TemporaryFileWrapper(file, name, delete)
if _os.name != 'posix' or _os.sys.platform == 'cygwin':
# On non-POSIX and Cygwin systems, assume that we cannot unlink a file