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gh-118824: Remove deprecated master_open and slave_open from pty (
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#118826)

Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>
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sobolevn and hugovk authored May 28, 2024
1 parent b407ad3 commit f912e5a
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Showing 3 changed files with 20 additions and 38 deletions.
8 changes: 8 additions & 0 deletions Doc/whatsnew/3.14.rst
Original file line number Diff line number Diff line change
Expand Up @@ -175,6 +175,14 @@ pathlib
:meth:`~pathlib.PurePath.is_relative_to`. In previous versions, any such
arguments are joined onto *other*.

pty
___

* Remove deprecated :func:`!pty.master_open` and :func:`!pty.slave_open`.
They had previously raised a :exc:`DeprecationWarning` since Python 3.12.
Use :func:`pty.openpty` instead.
(Contributed by Nikita Sobolev in :gh:`118824`.)

sqlite3
-------

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47 changes: 9 additions & 38 deletions Lib/pty.py
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Expand Up @@ -32,27 +32,18 @@ def openpty():
except (AttributeError, OSError):
pass
master_fd, slave_name = _open_terminal()
slave_fd = slave_open(slave_name)
return master_fd, slave_fd

def master_open():
"""master_open() -> (master_fd, slave_name)
Open a pty master and return the fd, and the filename of the slave end.
Deprecated, use openpty() instead."""

import warnings
warnings.warn("Use pty.openpty() instead.", DeprecationWarning, stacklevel=2) # Remove API in 3.14

slave_fd = os.open(slave_name, os.O_RDWR)
try:
master_fd, slave_fd = os.openpty()
except (AttributeError, OSError):
from fcntl import ioctl, I_PUSH
except ImportError:
return master_fd, slave_fd
try:
ioctl(result, I_PUSH, "ptem")
ioctl(result, I_PUSH, "ldterm")
except OSError:
pass
else:
slave_name = os.ttyname(slave_fd)
os.close(slave_fd)
return master_fd, slave_name

return _open_terminal()
return master_fd, slave_fd

def _open_terminal():
"""Open pty master and return (master_fd, tty_name)."""
Expand All @@ -66,26 +57,6 @@ def _open_terminal():
return (fd, '/dev/tty' + x + y)
raise OSError('out of pty devices')

def slave_open(tty_name):
"""slave_open(tty_name) -> slave_fd
Open the pty slave and acquire the controlling terminal, returning
opened filedescriptor.
Deprecated, use openpty() instead."""

import warnings
warnings.warn("Use pty.openpty() instead.", DeprecationWarning, stacklevel=2) # Remove API in 3.14

result = os.open(tty_name, os.O_RDWR)
try:
from fcntl import ioctl, I_PUSH
except ImportError:
return result
try:
ioctl(result, I_PUSH, "ptem")
ioctl(result, I_PUSH, "ldterm")
except OSError:
pass
return result

def fork():
"""fork() -> (pid, master_fd)
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Original file line number Diff line number Diff line change
@@ -0,0 +1,3 @@
Remove deprecated :func:`!pty.master_open` and :func:`!pty.slave_open`.
Use :func:`pty.openpty` instead.
Patch by Nikita Sobolev.

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