[Python-Dev] Implementation difference of audioop.lin2lin in Python2 and Python3

[KH Luke Kim]

Hello,
recently there had been some issues in audioread and librosa that 3-byte
samples can be loaded in Python 3 but 2.

The documentation says that the audioop.lin2lin function in Python 3
support 1-, 2-, 3-, 4-byte samples but only 1-, 2-, 4-byte samples in
Python 2.

I wonder why 3-byte support is not implemented in Python 2. If there is any
previous thread or history regarding this issue, could you refer it to me?

Thanks in advance,
Luke
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