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Make a few more tests pass with the new I/O library.

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Fix the truncate() semantics -- it should not affect the current position.
Switch wave.py/chunk.py to struct.unpack_from() to support bytes.
Don't use writelines() on binary files (test_fileinput.py).
This commit is contained in:
Guido van Rossum 2007-04-12 22:55:07 +00:00
parent b6f1fdc90c
commit dc0b1a1069
6 changed files with 16 additions and 20 deletions
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4
Lib/wave.py
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@ -256,9 +256,9 @@ class Wave_read:
#
def _read_fmt_chunk(self, chunk):
wFormatTag, self._nchannels, self._framerate, dwAvgBytesPerSec, wBlockAlign = struct.unpack('<hhllh', chunk.read(14))
wFormatTag, self._nchannels, self._framerate, dwAvgBytesPerSec, wBlockAlign = struct.unpack_from('<hhllh', chunk.read(14))
if wFormatTag == WAVE_FORMAT_PCM:
sampwidth = struct.unpack('<h', chunk.read(2))[0]
sampwidth = struct.unpack_from('<h', chunk.read(2))[0]
self._sampwidth = (sampwidth + 7) // 8
else:
raise Error, 'unknown format: %r' % (wFormatTag,)