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Issue #20699: Document that “io” methods accept bytes-like objects

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This matches the usage of ZipFile and BufferedWriter. This still requires
return values to be bytes() objects.

Also document and test that the write() methods should only access their
argument before they return.
This commit is contained in:
Martin Panter 2016-05-28 00:41:57 +00:00
parent fc36e66af4
commit 6bb91f3b6e
10 changed files with 128 additions and 67 deletions
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4
Modules/_io/bytesio.c
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@ -548,7 +548,7 @@ _io.BytesIO.readinto
buffer: Py_buffer(accept={rwbuffer})
/
Read up to len(buffer) bytes into buffer.
Read bytes into buffer.
Returns number of bytes read (0 for EOF), or None if the object
is set not to block and has no data to read.
@ -556,7 +556,7 @@ is set not to block and has no data to read.
static PyObject *
_io_BytesIO_readinto_impl(bytesio *self, Py_buffer *buffer)
/*[clinic end generated code: output=a5d407217dcf0639 input=b52a8782706f0037]*/
/*[clinic end generated code: output=a5d407217dcf0639 input=1424d0fdce857919]*/
{
Py_ssize_t len, n;