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gh-85864: Mark positional-only args in io docs (#91683)

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slateny 2022-04-22 17:30:52 -07:00 committed by GitHub
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Doc/library/io.rst
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@ -193,7 +193,7 @@ High-level Module Interface
.. versionadded:: 3.8
.. function:: text_encoding(encoding, stacklevel=2)
.. function:: text_encoding(encoding, stacklevel=2, /)
This is a helper function for callables that use :func:`open` or
:class:`TextIOWrapper` and have an ``encoding=None`` parameter.
@ -380,7 +380,7 @@ I/O Base Classes
Return ``True`` if the stream can be read from. If ``False``, :meth:`read`
will raise :exc:`OSError`.
.. method:: readline(size=-1)
.. method:: readline(size=-1, /)
Read and return one line from the stream. If *size* is specified, at
most *size* bytes will be read.
@ -389,7 +389,7 @@ I/O Base Classes
the *newline* argument to :func:`open` can be used to select the line
terminator(s) recognized.
.. method:: readlines(hint=-1)
.. method:: readlines(hint=-1, /)
Read and return a list of lines from the stream. *hint* can be specified
to control the number of lines read: no more lines will be read if the
@ -475,7 +475,7 @@ I/O Base Classes
:class:`RawIOBase` provides these methods in addition to those from
:class:`IOBase`:
.. method:: read(size=-1)
.. method:: read(size=-1, /)
Read up to *size* bytes from the object and return them. As a convenience,
if *size* is unspecified or -1, all bytes until EOF are returned.
@ -585,7 +585,7 @@ I/O Base Classes
If *size* is ``-1`` (the default), an arbitrary number of bytes are
returned (more than zero unless EOF is reached).
.. method:: readinto(b)
.. method:: readinto(b, /)
Read bytes into a pre-allocated, writable
:term:`bytes-like object` *b* and return the number of bytes read.
@ -597,7 +597,7 @@ I/O Base Classes
A :exc:`BlockingIOError` is raised if the underlying raw stream is in non
blocking-mode, and has no data available at the moment.
.. method:: readinto1(b)
.. method:: readinto1(b, /)
Read bytes into a pre-allocated, writable
:term:`bytes-like object` *b*, using at most one call to
@ -727,7 +727,7 @@ than raw I/O does.
Return :class:`bytes` containing the entire contents of the buffer.
.. method:: read1([size])
.. method:: read1([size], /)
In :class:`BytesIO`, this is the same as :meth:`~BufferedIOBase.read`.
@ -805,7 +805,7 @@ than raw I/O does.
Force bytes held in the buffer into the raw stream. A
:exc:`BlockingIOError` should be raised if the raw stream blocks.
.. method:: write(b)
.. method:: write(b, /)
Write the :term:`bytes-like object`, *b*, and return the
number of bytes written. When in non-blocking mode, a
@ -828,7 +828,7 @@ than raw I/O does.
are guaranteed to be implemented.
.. class:: BufferedRWPair(reader, writer, buffer_size=DEFAULT_BUFFER_SIZE)
.. class:: BufferedRWPair(reader, writer, buffer_size=DEFAULT_BUFFER_SIZE, /)
A buffered binary stream providing higher-level access to two non seekable
:class:`RawIOBase` raw binary streams---one readable, the other writeable.
@ -895,7 +895,7 @@ Text I/O
.. versionadded:: 3.1
.. method:: read(size=-1)
.. method:: read(size=-1, /)
Read and return at most *size* characters from the stream as a single
:class:`str`. If *size* is negative or ``None``, reads until EOF.