Ehm, when we don't need to byteswap the data, don't go through an

array object at all.

diff --git a/Lib/wave.py b/Lib/wave.py
index c34830a430a24808ab769978c4cfde36cfeb91a9..1353b51b37669bde5a200237ce379e5a97928742 100644 (file)
--- a/Lib/wave.py
+++ b/Lib/wave.py
@@ -305,7 +305,7 @@ class Wave_read:
                        self._data_seek_needed = 0
                if nframes == 0:
                        return ''
-               if self._sampwidth > 1:
+               if self._sampwidth > 1 and big_endian:
                        # unfortunately the fromfile() method does not take
                        # something that only looks like a file object, so
                        # we have to reach into the innards of the chunk object
@@ -316,8 +316,7 @@ class Wave_read:
                                nitems = (self._data_chunk.chunksize - self._data_chunk.size_read) / self._sampwidth
                        data.fromfile(self._data_chunk.file, nitems)
                        self._data_chunk.size_read = self._data_chunk.size_read + nitems * self._sampwidth
-                       if big_endian:
-                               data.byteswap()
+                       data.byteswap()
                        data = data.tostring()
                else:
                        data = self._data_chunk.read(nframes * self._framesize)
@@ -487,11 +486,10 @@ class Wave_write:
                nframes = len(data) / (self._sampwidth * self._nchannels)
                if self._convert:
                        data = self._convert(data)
-               if self._sampwidth > 1:
+               if self._sampwidth > 1 and big_endian:
                        import array
                        data = array.array(_array_fmts[self._sampwidth], data)
-                       if big_endian:
-                               data.byteswap()
+                       data.byteswap()
                        data.tofile(self._file)
                        self._datawritten = self._datawritten + len(data) * self._sampwidth
                else: