[issue31271] an assertion failure in io.TextIOWrapper.write

[Oren Milman]

Oren Milman <orenmn at gmail.com> added the comment:

I am not sure, but ISTM that it isn't possible for the encoder to return a
unicode and not fail later.
This is because _textiowrapper_writeflush() would call _io.BytesIO.write()
(after it called _PyBytes_Join()), and bytesio_write() calls PyObject_GetBuffer(),
which would raise "TypeError: 'unicode' does not have the buffer interface".

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue31271>
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