used for writing, the file object should be seekable, unless you know ahead of
time how many samples you are going to write in total and use
:meth:`writeframesraw` and :meth:`setnframes`.
+ Objects returned by :func:`.open` also supports the :keyword:`with` statement.
+
+.. versionchanged:: 3.4
+ Support for the :keyword:`with` statement was added.
Objects returned by :func:`.open` when a file is opened for reading have the
following methods:
# else, assume it is an open file object already
self.initfp(f)
+ def __enter__(self):
+ return self
+
+ def __exit__(self, *args):
+ self.close()
+
#
# User visible methods.
#
def __del__(self):
self.close()
+ def __enter__(self):
+ return self
+
+ def __exit__(self, *args):
+ self.close()
+
#
# User visible methods.
#
(2, 2, 48000, 14400, b'NONE', b'not compressed'),
)
+ def test_context_manager(self):
+ with open(self.sndfilepath, 'rb') as testfile:
+ with aifc.open(testfile) as f:
+ pass
+ self.assertEqual(testfile.closed, True)
+ with open(TESTFN, 'wb') as testfile:
+ with self.assertRaises(aifc.Error):
+ with aifc.open(testfile, 'wb') as fout:
+ pass
+ self.assertEqual(testfile.closed, True)
+ fout.close() # do nothing
+
def test_read(self):
f = self.f = aifc.open(self.sndfilepath)
self.assertEqual(f.readframes(0), b'')
Library
-------
+- Issue #16486: Make aifc files work with 'with' as context managers.
+
- Issue #16485: Fix file descriptor not being closed if file header patching
fails on closing of aifc file.