diff options
| -rw-r--r-- | Doc/library/tempfile.rst | 36 | ||||
| -rw-r--r-- | Lib/tempfile.py | 17 |
2 files changed, 26 insertions, 27 deletions
diff --git a/Doc/library/tempfile.rst b/Doc/library/tempfile.rst index beb02a6..19e1e7f 100644 --- a/Doc/library/tempfile.rst +++ b/Doc/library/tempfile.rst @@ -33,7 +33,7 @@ is recommended to use keyword arguments for clarity. The module defines the following user-callable items: -.. function:: TemporaryFile(mode='w+b', buffering=None, encoding=None, newline=None, suffix='', prefix='tmp', dir=None) +.. function:: TemporaryFile(mode='w+b', buffering=None, encoding=None, newline=None, suffix=None, prefix=None, dir=None) Return a :term:`file-like object` that can be used as a temporary storage area. The file is created securely, using the same rules as :func:`mkstemp`. It will be destroyed as soon @@ -54,8 +54,8 @@ The module defines the following user-callable items: stored. *buffering*, *encoding* and *newline* are interpreted as for :func:`open`. - The *dir*, *prefix* and *suffix* parameters have the same meaning - as with :func:`mkstemp`. + The *dir*, *prefix* and *suffix* parameters have the same meaning and + defaults as with :func:`mkstemp`. The returned object is a true file object on POSIX platforms. On other platforms, it is a file-like object whose :attr:`!file` attribute is the @@ -69,7 +69,7 @@ The module defines the following user-callable items: The :py:data:`os.O_TMPFILE` flag is now used if available. -.. function:: NamedTemporaryFile(mode='w+b', buffering=None, encoding=None, newline=None, suffix='', prefix='tmp', dir=None, delete=True) +.. function:: NamedTemporaryFile(mode='w+b', buffering=None, encoding=None, newline=None, suffix=None, prefix=None, dir=None, delete=True) This function operates exactly as :func:`TemporaryFile` does, except that the file is guaranteed to have a visible name in the file system (on @@ -84,7 +84,7 @@ The module defines the following user-callable items: be used in a :keyword:`with` statement, just like a normal file. -.. function:: SpooledTemporaryFile(max_size=0, mode='w+b', buffering=None, encoding=None, newline=None, suffix='', prefix='tmp', dir=None) +.. function:: SpooledTemporaryFile(max_size=0, mode='w+b', buffering=None, encoding=None, newline=None, suffix=None, prefix=None, dir=None) This function operates exactly as :func:`TemporaryFile` does, except that data is spooled in memory until the file size exceeds *max_size*, or @@ -106,7 +106,7 @@ The module defines the following user-callable items: the truncate method now accepts a ``size`` argument. -.. function:: TemporaryDirectory(suffix='', prefix='tmp', dir=None) +.. function:: TemporaryDirectory(suffix=None, prefix=None, dir=None) This function securely creates a temporary directory using the same rules as :func:`mkdtemp`. The resulting object can be used as a context manager (see @@ -138,15 +138,16 @@ The module defines the following user-callable items: Unlike :func:`TemporaryFile`, the user of :func:`mkstemp` is responsible for deleting the temporary file when done with it. - If *suffix* is specified, the file name will end with that suffix, + If *suffix* is not ``None``, the file name will end with that suffix, otherwise there will be no suffix. :func:`mkstemp` does not put a dot between the file name and the suffix; if you need one, put it at the beginning of *suffix*. - If *prefix* is specified, the file name will begin with that prefix; - otherwise, a default prefix is used. + If *prefix* is not ``None``, the file name will begin with that prefix; + otherwise, a default prefix is used. The default is the return value of + :func:`gettempprefix` or :func:`gettempprefixb`, as appropriate. - If *dir* is specified, the file will be created in that directory; + If *dir* is not ``None``, the file will be created in that directory; otherwise, a default directory is used. The default directory is chosen from a platform-dependent list, but the user of the application can control the directory location by setting the *TMPDIR*, *TEMP* or *TMP* @@ -154,16 +155,12 @@ The module defines the following user-callable items: filename will have any nice properties, such as not requiring quoting when passed to external commands via ``os.popen()``. - *suffix*, *prefix*, and *dir* must all contain the same type, if specified. + If any of *suffix*, *prefix*, and *dir* are not + ``None``, they must be the same type. If they are bytes, the returned name will be bytes instead of str. If you want to force a bytes return value with otherwise default behavior, pass ``suffix=b''``. - A *prefix* value of ``None`` means use the return value of - :func:`gettempprefix` or :func:`gettempprefixb` as appropriate. - - A *suffix* value of ``None`` means use an appropriate empty value. - If *text* is specified, it indicates whether to open the file in binary mode (the default) or text mode. On some platforms, this makes no difference. @@ -241,7 +238,7 @@ The module defines the following user-callable items: .. function:: gettempprefixb() - Same as :func:`gettempprefixb` but the return value is in bytes. + Same as :func:`gettempprefix` but the return value is in bytes. .. versionadded:: 3.5 @@ -314,8 +311,9 @@ other functions described above. Use :func:`mkstemp` instead. Return an absolute pathname of a file that did not exist at the time the - call is made. The *prefix*, *suffix*, and *dir* arguments are the same - as for :func:`mkstemp`. + call is made. The *prefix*, *suffix*, and *dir* arguments are similar + to those of :func:`mkstemp`, except that bytes file names, ``suffix=None`` + and ``prefix=None`` are not supported. .. warning:: diff --git a/Lib/tempfile.py b/Lib/tempfile.py index e87eb09..d381a25 100644 --- a/Lib/tempfile.py +++ b/Lib/tempfile.py @@ -307,22 +307,22 @@ def mkstemp(suffix=None, prefix=None, dir=None, text=False): file. The return value is a pair (fd, name) where fd is the file descriptor returned by os.open, and name is the filename. - If 'suffix' is specified, the file name will end with that suffix, + If 'suffix' is not None, the file name will end with that suffix, otherwise there will be no suffix. - If 'prefix' is specified, the file name will begin with that prefix, + If 'prefix' is not None, the file name will begin with that prefix, otherwise a default prefix is used. - If 'dir' is specified, the file will be created in that directory, + If 'dir' is not None, the file will be created in that directory, otherwise a default directory is used. If 'text' is specified and true, the file is opened in text mode. Else (the default) the file is opened in binary mode. On some operating systems, this makes no difference. - suffix, prefix and dir must all contain the same type if specified. - If they are bytes, the returned name will be bytes; str otherwise. - A value of None will cause an appropriate default to be used. + If any of 'suffix', 'prefix' and 'dir' are not None, they must be the + same type. If they are bytes, the returned name will be bytes; str + otherwise. The file is readable and writable only by the creating user ID. If the operating system uses permission bits to indicate whether a @@ -385,8 +385,9 @@ def mktemp(suffix="", prefix=template, dir=None): """User-callable function to return a unique temporary file name. The file is not created. - Arguments are as for mkstemp, except that the 'text' argument is - not accepted. + Arguments are similar to mkstemp, except that the 'text' argument is + not accepted, and suffix=None, prefix=None and bytes file names are not + supported. THIS FUNCTION IS UNSAFE AND SHOULD NOT BE USED. The file name may refer to a file that did not exist at some point, but by the time |