diff --git a/Doc/library/tempfile.rst b/Doc/library/tempfile.rst index c59aca1e189..79914e15f44 100644 --- a/Doc/library/tempfile.rst +++ b/Doc/library/tempfile.rst @@ -31,7 +31,7 @@ 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=None, prefix=None, dir=None) +.. function:: TemporaryFile(mode='w+b', buffering=None, encoding=None, newline=None, suffix=None, prefix=None, dir=None, *, errors=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 @@ -49,7 +49,7 @@ The module defines the following user-callable items: The *mode* parameter defaults to ``'w+b'`` so that the file created can be read and written without being closed. Binary mode is used so that it behaves consistently on all platforms without regard for the data that is - stored. *buffering*, *encoding* and *newline* are interpreted as for + stored. *buffering*, *encoding*, *errors* and *newline* are interpreted as for :func:`open`. The *dir*, *prefix* and *suffix* parameters have the same meaning and @@ -66,8 +66,11 @@ The module defines the following user-callable items: The :py:data:`os.O_TMPFILE` flag is now used if available. + .. versionchanged:: 3.8 + Added *errors* parameter. -.. function:: NamedTemporaryFile(mode='w+b', buffering=None, encoding=None, newline=None, suffix=None, prefix=None, dir=None, delete=True) + +.. function:: NamedTemporaryFile(mode='w+b', buffering=None, encoding=None, newline=None, suffix=None, prefix=None, dir=None, delete=True, *, errors=None) This function operates exactly as :func:`TemporaryFile` does, except that the file is guaranteed to have a visible name in the file system (on @@ -82,8 +85,11 @@ The module defines the following user-callable items: attribute is the underlying true file object. This file-like object can be used in a :keyword:`with` statement, just like a normal file. + .. versionchanged:: 3.8 + Added *errors* parameter. -.. function:: SpooledTemporaryFile(max_size=0, mode='w+b', buffering=None, encoding=None, newline=None, suffix=None, prefix=None, dir=None) + +.. function:: SpooledTemporaryFile(max_size=0, mode='w+b', buffering=None, encoding=None, newline=None, suffix=None, prefix=None, dir=None, *, errors=None) This function operates exactly as :func:`TemporaryFile` does, except that data is spooled in memory until the file size exceeds *max_size*, or @@ -104,6 +110,9 @@ The module defines the following user-callable items: .. versionchanged:: 3.3 the truncate method now accepts a ``size`` argument. + .. versionchanged:: 3.8 + Added *errors* parameter. + .. function:: TemporaryDirectory(suffix=None, prefix=None, dir=None) diff --git a/Lib/tempfile.py b/Lib/tempfile.py index 21432241696..e6fb3c8e9ad 100644 --- a/Lib/tempfile.py +++ b/Lib/tempfile.py @@ -519,7 +519,7 @@ class _TemporaryFileWrapper: def NamedTemporaryFile(mode='w+b', buffering=-1, encoding=None, newline=None, suffix=None, prefix=None, - dir=None, delete=True): + dir=None, delete=True, *, errors=None): """Create and return a temporary file. Arguments: 'prefix', 'suffix', 'dir' -- as for mkstemp. @@ -528,6 +528,7 @@ def NamedTemporaryFile(mode='w+b', buffering=-1, encoding=None, 'encoding' -- the encoding argument to io.open (default None) 'newline' -- the newline argument to io.open (default None) 'delete' -- whether the file is deleted on close (default True). + 'errors' -- the errors argument to io.open (default None) The file is created as mkstemp() would do it. Returns an object with a file-like interface; the name of the file @@ -547,7 +548,7 @@ def NamedTemporaryFile(mode='w+b', buffering=-1, encoding=None, (fd, name) = _mkstemp_inner(dir, prefix, suffix, flags, output_type) try: file = _io.open(fd, mode, buffering=buffering, - newline=newline, encoding=encoding) + newline=newline, encoding=encoding, errors=errors) return _TemporaryFileWrapper(file, name, delete) except BaseException: @@ -568,7 +569,7 @@ else: def TemporaryFile(mode='w+b', buffering=-1, encoding=None, newline=None, suffix=None, prefix=None, - dir=None): + dir=None, *, errors=None): """Create and return a temporary file. Arguments: 'prefix', 'suffix', 'dir' -- as for mkstemp. @@ -576,6 +577,7 @@ else: 'buffering' -- the buffer size argument to io.open (default -1). 'encoding' -- the encoding argument to io.open (default None) 'newline' -- the newline argument to io.open (default None) + 'errors' -- the errors argument to io.open (default None) The file is created as mkstemp() would do it. Returns an object with a file-like interface. The file has no @@ -609,7 +611,8 @@ else: else: try: return _io.open(fd, mode, buffering=buffering, - newline=newline, encoding=encoding) + newline=newline, encoding=encoding, + errors=errors) except: _os.close(fd) raise @@ -619,7 +622,7 @@ else: try: _os.unlink(name) return _io.open(fd, mode, buffering=buffering, - newline=newline, encoding=encoding) + newline=newline, encoding=encoding, errors=errors) except: _os.close(fd) raise @@ -633,7 +636,7 @@ class SpooledTemporaryFile: def __init__(self, max_size=0, mode='w+b', buffering=-1, encoding=None, newline=None, - suffix=None, prefix=None, dir=None): + suffix=None, prefix=None, dir=None, *, errors=None): if 'b' in mode: self._file = _io.BytesIO() else: @@ -646,7 +649,7 @@ class SpooledTemporaryFile: self._TemporaryFileArgs = {'mode': mode, 'buffering': buffering, 'suffix': suffix, 'prefix': prefix, 'encoding': encoding, 'newline': newline, - 'dir': dir} + 'dir': dir, 'errors': errors} def _check(self, file): if self._rolled: return @@ -692,12 +695,11 @@ class SpooledTemporaryFile: @property def encoding(self): - try: - return self._file.encoding - except AttributeError: - if 'b' in self._TemporaryFileArgs['mode']: - raise - return self._TemporaryFileArgs['encoding'] + return self._file.encoding + + @property + def errors(self): + return self._file.errors def fileno(self): self.rollover() @@ -725,12 +727,7 @@ class SpooledTemporaryFile: @property def newlines(self): - try: - return self._file.newlines - except AttributeError: - if 'b' in self._TemporaryFileArgs['mode']: - raise - return self._TemporaryFileArgs['newline'] + return self._file.newlines def read(self, *args): return self._file.read(*args) diff --git a/Lib/test/test_tempfile.py b/Lib/test/test_tempfile.py index 710756bde64..e5098d2eea6 100644 --- a/Lib/test/test_tempfile.py +++ b/Lib/test/test_tempfile.py @@ -1094,6 +1094,8 @@ class TestSpooledTemporaryFile(BaseTestCase): f.newlines with self.assertRaises(AttributeError): f.encoding + with self.assertRaises(AttributeError): + f.errors f.write(b'x') self.assertTrue(f._rolled) @@ -1103,6 +1105,8 @@ class TestSpooledTemporaryFile(BaseTestCase): f.newlines with self.assertRaises(AttributeError): f.encoding + with self.assertRaises(AttributeError): + f.errors def test_text_mode(self): # Creating a SpooledTemporaryFile with a text mode should produce @@ -1119,6 +1123,7 @@ class TestSpooledTemporaryFile(BaseTestCase): self.assertIsNone(f.name) self.assertIsNone(f.newlines) self.assertIsNone(f.encoding) + self.assertIsNone(f.errors) f.write("xyzzy\n") f.seek(0) @@ -1132,10 +1137,12 @@ class TestSpooledTemporaryFile(BaseTestCase): self.assertIsNotNone(f.name) self.assertEqual(f.newlines, os.linesep) self.assertIsNotNone(f.encoding) + self.assertIsNotNone(f.errors) def test_text_newline_and_encoding(self): f = tempfile.SpooledTemporaryFile(mode='w+', max_size=10, - newline='', encoding='utf-8') + newline='', encoding='utf-8', + errors='ignore') f.write("\u039B\r\n") f.seek(0) self.assertEqual(f.read(), "\u039B\r\n") @@ -1144,6 +1151,7 @@ class TestSpooledTemporaryFile(BaseTestCase): self.assertIsNone(f.name) self.assertIsNone(f.newlines) self.assertIsNone(f.encoding) + self.assertIsNone(f.errors) f.write("\u039B" * 20 + "\r\n") f.seek(0) @@ -1153,6 +1161,7 @@ class TestSpooledTemporaryFile(BaseTestCase): self.assertIsNotNone(f.name) self.assertIsNotNone(f.newlines) self.assertEqual(f.encoding, 'utf-8') + self.assertEqual(f.errors, 'ignore') def test_context_manager_before_rollover(self): # A SpooledTemporaryFile can be used as a context manager diff --git a/Misc/NEWS.d/next/Library/2018-05-01-02-24-44.bpo-27300.LdIXvK.rst b/Misc/NEWS.d/next/Library/2018-05-01-02-24-44.bpo-27300.LdIXvK.rst new file mode 100644 index 00000000000..5edbc86b9c9 --- /dev/null +++ b/Misc/NEWS.d/next/Library/2018-05-01-02-24-44.bpo-27300.LdIXvK.rst @@ -0,0 +1,2 @@ +The file classes in *tempfile* now accept an *errors* parameter that +complements the already existing *encoding*. Patch by Stephan Hohe.