tree 716c27c92ba30af0a979718d61b07903d3ec8042
parent 3404474d611487c32c55dddb0c443fb27798ae2e
author paulavidas <paulavidas@google.com> 1568101544 -0700
committer Copybara-Service <copybara-worker@google.com> 1568101611 -0700

Return number of bytes written in case of BlockingIOError.

In case of a partial write BufferedIOBase doesn't return the length of data written, but gives a BlockingIOError that contains the number of characters written.
See https://docs.python.org/3/library/io.html#io.BufferedIOBase.write

Also, RawIOBase returns None (and not 0) when no data can be written.

PiperOrigin-RevId: 268167212