Issue #16685: Added support for writing any bytes-like objects in the aifc,

sunau, and wave modules.

Doc/library/aifc.rst

@@ -225,12 +225,18 @@ number of frames must be filled in.
    Write data to the output file.  This method can only be called after the audio
    file parameters have been set.
 
+   .. versionchanged:: 3.4
+      Any :term:`bytes-like object`\ s are now accepted.
+
 
 .. method:: aifc.writeframesraw(data)
 
    Like :meth:`writeframes`, except that the header of the audio file is not
    updated.
 
+   .. versionchanged:: 3.4
+      Any :term:`bytes-like object`\ s are now accepted.
+
 
 .. method:: aifc.close()
 

Doc/library/sunau.rst

@@ -250,11 +250,17 @@ AU_write objects, as returned by :func:`.open` above, have the following methods
 
    Write audio frames, without correcting *nframes*.
 
+   .. versionchanged:: 3.4
+      Any :term:`bytes-like object`\ s are now accepted.
+
 
 .. method:: AU_write.writeframes(data)
 
    Write audio frames and make sure *nframes* is correct.
 
+   .. versionchanged:: 3.4
+      Any :term:`bytes-like object`\ s are now accepted.
+
 
 .. method:: AU_write.close()
 

Doc/library/wave.rst

@@ -208,12 +208,18 @@ Wave_write objects, as returned by :func:`.open`, have the following methods:
 
    Write audio frames, without correcting *nframes*.
 
+   .. versionchanged:: 3.4
+      Any :term:`bytes-like object`\ s are now accepted.
+
 
 .. method:: Wave_write.writeframes(data)
 
    Write audio frames and make sure *nframes* is correct. Can raise an
    exception if a file is not seekable.
 
+   .. versionchanged:: 3.4
+      Any :term:`bytes-like object`\ s are now accepted.
+
 
 Note that it is invalid to set any parameters after calling :meth:`writeframes`
 or :meth:`writeframesraw`, and any attempt to do so will raise

Lib/aifc.py

@@ -692,6 +692,8 @@ class Aifc_write:
         return self._nframeswritten
 
     def writeframesraw(self, data):
+        if not isinstance(data, (bytes, bytearray)):
+            data = memoryview(data).cast('B')
         self._ensure_header_written(len(data))
         nframes = len(data) // (self._sampwidth * self._nchannels)
         if self._convert:

Lib/sunau.py

@@ -415,6 +415,8 @@ class Au_write:
         return self._nframeswritten
 
     def writeframesraw(self, data):
+        if not isinstance(data, (bytes, bytearray)):
+            data = memoryview(data).cast('B')
         self._ensure_header_written()
         if self._comptype == 'ULAW':
             import audioop

Lib/test/audiotests.py

@@ -146,6 +146,30 @@ class AudioWriteTests(AudioTests):
 
         self.check_file(TESTFN, self.nframes, self.frames)
 
+    def test_write_bytearray(self):
+        f = self.create_file(TESTFN)
+        f.setnframes(self.nframes)
+        f.writeframes(bytearray(self.frames))
+        f.close()
+
+        self.check_file(TESTFN, self.nframes, self.frames)
+
+    def test_write_array(self):
+        f = self.create_file(TESTFN)
+        f.setnframes(self.nframes)
+        f.writeframes(array.array('h', self.frames))
+        f.close()
+
+        self.check_file(TESTFN, self.nframes, self.frames)
+
+    def test_write_memoryview(self):
+        f = self.create_file(TESTFN)
+        f.setnframes(self.nframes)
+        f.writeframes(memoryview(self.frames))
+        f.close()
+
+        self.check_file(TESTFN, self.nframes, self.frames)
+
     def test_incompleted_write(self):
         with open(TESTFN, 'wb') as testfile:
             testfile.write(b'ababagalamaga')

Lib/wave.py

@@ -435,6 +435,8 @@ class Wave_write:
         return self._nframeswritten
 
     def writeframesraw(self, data):
+        if not isinstance(data, (bytes, bytearray)):
+            data = memoryview(data).cast('B')
         self._ensure_header_written(len(data))
         nframes = len(data) // (self._sampwidth * self._nchannels)
         if self._convert:

Misc/NEWS

@@ -47,6 +47,9 @@ Core and Builtins
 Library
 -------
 
+- Issue #16685: Added support for writing any bytes-like objects in the aifc,
+  sunau, and wave modules.
+
 - Issue #5202: Added support for unseekable files in the wave module.
 
 - Issue #19544 and Issue #1180: Restore global option to ignore