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Name	Size	Permission	Date
__pycache__	[ DIR ]	drwxr-xr-x	2026-03-19 01:19
asyncio	[ DIR ]	drwxr-xr-x	2026-03-19 01:18
collections	[ DIR ]	drwxr-xr-x	2026-03-19 01:18
concurrent	[ DIR ]	drwxr-xr-x	2026-03-19 01:18
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ctypes	[ DIR ]	drwxr-xr-x	2026-03-19 01:18
curses	[ DIR ]	drwxr-xr-x	2026-03-19 01:18
dbm	[ DIR ]	drwxr-xr-x	2026-03-19 01:18
distutils	[ DIR ]	drwxr-xr-x	2026-03-19 01:18
email	[ DIR ]	drwxr-xr-x	2026-03-19 01:18
encodings	[ DIR ]	drwxr-xr-x	2026-03-19 01:18
ensurepip	[ DIR ]	drwxr-xr-x	2026-03-19 01:18
html	[ DIR ]	drwxr-xr-x	2026-03-19 01:18
http	[ DIR ]	drwxr-xr-x	2026-03-19 01:18
idlelib	[ DIR ]	drwxr-xr-x	2026-03-19 01:18
importlib	[ DIR ]	drwxr-xr-x	2026-03-19 01:18
json	[ DIR ]	drwxr-xr-x	2026-03-19 01:18
lib-dynload	[ DIR ]	drwxr-xr-x	2026-03-19 01:18
lib2to3	[ DIR ]	drwxr-xr-x	2026-03-19 01:18
logging	[ DIR ]	drwxr-xr-x	2026-03-19 01:18
multiprocessing	[ DIR ]	drwxr-xr-x	2026-03-19 01:18
pydoc_data	[ DIR ]	drwxr-xr-x	2026-03-19 01:18
site-packages	[ DIR ]	drwxr-xr-x	2026-03-19 01:18
test	[ DIR ]	drwxr-xr-x	2026-03-19 01:18
tkinter	[ DIR ]	drwxr-xr-x	2026-03-19 01:18
turtledemo	[ DIR ]	drwxr-xr-x	2026-03-19 01:18
unittest	[ DIR ]	drwxr-xr-x	2026-03-19 01:18
urllib	[ DIR ]	drwxr-xr-x	2026-03-19 01:18
venv	[ DIR ]	drwxr-xr-x	2026-03-19 01:18
wsgiref	[ DIR ]	drwxr-xr-x	2026-03-19 01:18
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xmlrpc	[ DIR ]	drwxr-xr-x	2026-03-19 01:18
zoneinfo	[ DIR ]	drwxr-xr-x	2026-03-19 01:18
LICENSE.txt	13.6 KB	-rw-r--r--	2026-03-11 06:54
__future__.py	5.03 KB	-rw-r--r--	2026-03-11 06:54
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calendar.py	24.25 KB	-rw-r--r--	2026-03-11 06:54
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datetime.py	87.06 KB	-rw-r--r--	2026-03-11 06:54
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dis.py	20.09 KB	-rw-r--r--	2026-03-11 06:54
doctest.py	102 KB	-rw-r--r--	2026-03-11 06:54
enum.py	38.52 KB	-rw-r--r--	2026-03-11 06:54
filecmp.py	9.79 KB	-rw-r--r--	2026-03-11 06:54
fileinput.py	14.44 KB	-rw-r--r--	2026-03-11 06:54
fnmatch.py	5.86 KB	-rw-r--r--	2026-03-11 06:54
formatter.py	14.79 KB	-rw-r--r--	2026-03-11 06:54
fractions.py	23.75 KB	-rw-r--r--	2026-03-11 06:54
ftplib.py	34.66 KB	-rw-r--r--	2026-03-11 06:54
functools.py	37.57 KB	-rw-r--r--	2026-03-11 06:54
genericpath.py	4.86 KB	-rw-r--r--	2026-03-11 06:54
getopt.py	7.31 KB	-rw-r--r--	2026-03-11 06:54
getpass.py	5.85 KB	-rw-r--r--	2026-03-11 06:54
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glob.py	5.69 KB	-rw-r--r--	2026-03-11 06:54
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heapq.py	22.34 KB	-rw-r--r--	2026-03-11 06:54
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imghdr.py	3.72 KB	-rw-r--r--	2026-03-11 06:54
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ipaddress.py	72.92 KB	-rw-r--r--	2026-03-11 06:54
keyword.py	1.02 KB	-rw-r--r--	2026-03-11 06:54
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mailbox.py	76.95 KB	-rw-r--r--	2026-03-11 06:54
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modulefinder.py	23.83 KB	-rw-r--r--	2026-03-11 06:54
netrc.py	5.44 KB	-rw-r--r--	2026-03-11 06:54
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ntpath.py	27.08 KB	-rw-r--r--	2026-03-11 06:54
nturl2path.py	2.82 KB	-rw-r--r--	2026-03-11 06:54
numbers.py	10.1 KB	-rw-r--r--	2026-03-11 06:54
opcode.py	5.53 KB	-rw-r--r--	2026-03-11 06:54
operator.py	10.5 KB	-rw-r--r--	2026-03-11 06:54
optparse.py	58.95 KB	-rw-r--r--	2026-03-11 06:54
os.py	38.15 KB	-rw-r--r--	2026-03-11 06:54
pathlib.py	52.81 KB	-rw-r--r--	2026-03-11 06:54
pdb.py	61.62 KB	-rwxr-xr-x	2026-03-11 06:54
pickle.py	63.4 KB	-rw-r--r--	2026-03-11 06:54
pickletools.py	91.29 KB	-rw-r--r--	2026-03-11 06:54
pipes.py	8.71 KB	-rw-r--r--	2026-03-11 06:54
pkgutil.py	23.71 KB	-rw-r--r--	2026-03-11 06:54
platform.py	39.65 KB	-rwxr-xr-x	2026-03-11 06:54
plistlib.py	27.59 KB	-rw-r--r--	2026-03-11 06:54
poplib.py	14.84 KB	-rw-r--r--	2026-03-11 06:54
posixpath.py	15.35 KB	-rw-r--r--	2026-03-11 06:54
pprint.py	22 KB	-rw-r--r--	2026-03-11 06:54
profile.py	22.33 KB	-rwxr-xr-x	2026-03-11 06:54
pstats.py	28.64 KB	-rw-r--r--	2026-03-11 06:54
pty.py	4.69 KB	-rw-r--r--	2026-03-11 06:54
py_compile.py	7.96 KB	-rw-r--r--	2026-03-11 06:54
pyclbr.py	14.9 KB	-rw-r--r--	2026-03-11 06:54
pydoc.py	106.98 KB	-rwxr-xr-x	2026-03-11 06:54
queue.py	11.21 KB	-rw-r--r--	2026-03-11 06:54
quopri.py	7.1 KB	-rwxr-xr-x	2026-03-11 06:54
random.py	30.75 KB	-rw-r--r--	2026-03-11 06:54
re.py	15.49 KB	-rw-r--r--	2026-03-11 06:54
reprlib.py	5.14 KB	-rw-r--r--	2026-03-11 06:54
rlcompleter.py	7.47 KB	-rw-r--r--	2026-03-11 06:54
runpy.py	11.92 KB	-rw-r--r--	2026-03-11 06:54
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shutil.py	51.04 KB	-rw-r--r--	2026-03-11 06:54
signal.py	2.22 KB	-rw-r--r--	2026-03-11 06:54
site.py	21.06 KB	-rw-r--r--	2026-03-11 06:54
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smtplib.py	44.34 KB	-rwxr-xr-x	2026-03-11 06:54
sndhdr.py	6.93 KB	-rw-r--r--	2026-03-11 06:54
socket.py	35.83 KB	-rwxr-xr-x	2026-03-11 06:54
socketserver.py	26.66 KB	-rw-r--r--	2026-03-11 06:54
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sre_constants.py	6.99 KB	-rw-r--r--	2026-03-11 06:54
sre_parse.py	39.29 KB	-rw-r--r--	2026-03-11 06:54
ssl.py	49.56 KB	-rw-r--r--	2026-03-11 06:54
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statistics.py	37.18 KB	-rw-r--r--	2026-03-11 06:54
string.py	10.32 KB	-rw-r--r--	2026-03-11 06:54
stringprep.py	12.61 KB	-rw-r--r--	2026-03-11 06:54
struct.py	257 B	-rw-r--r--	2026-03-11 06:54
subprocess.py	80.71 KB	-rw-r--r--	2026-03-11 06:54
sunau.py	17.73 KB	-rw-r--r--	2026-03-11 06:54
symbol.py	2.23 KB	-rw-r--r--	2026-03-11 06:54
symtable.py	7.72 KB	-rw-r--r--	2026-03-11 06:54
sysconfig.py	24.33 KB	-rw-r--r--	2026-03-11 06:54
tabnanny.py	11.14 KB	-rwxr-xr-x	2026-03-11 06:54
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telnetlib.py	22.71 KB	-rw-r--r--	2026-03-11 06:54
tempfile.py	27.03 KB	-rw-r--r--	2026-03-11 06:54
textwrap.py	18.95 KB	-rw-r--r--	2026-03-11 06:54
this.py	1003 B	-rw-r--r--	2026-03-11 06:54
threading.py	52.61 KB	-rw-r--r--	2026-03-11 06:54
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token.py	2.31 KB	-rw-r--r--	2026-03-11 06:54
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traceback.py	24.01 KB	-rw-r--r--	2026-03-11 06:54
tracemalloc.py	17.62 KB	-rw-r--r--	2026-03-11 06:54
tty.py	879 B	-rw-r--r--	2026-03-11 06:54
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zipfile.py	85.23 KB	-rw-r--r--	2026-03-11 06:54
zipimport.py	30.04 KB	-rw-r--r--	2026-03-11 06:54

Rename

"""Pseudo terminal utilities."""

# Bugs: No signal handling.  Doesn't set slave termios and window size.
#       Only tested on Linux.
# See:  W. Richard Stevens. 1992.  Advanced Programming in the
#       UNIX Environment.  Chapter 19.
# Author: Steen Lumholt -- with additions by Guido.

from select import select
import os
import sys
import tty

__all__ = ["openpty","fork","spawn"]

STDIN_FILENO = 0
STDOUT_FILENO = 1
STDERR_FILENO = 2

CHILD = 0

def openpty():
    """openpty() -> (master_fd, slave_fd)
    Open a pty master/slave pair, using os.openpty() if possible."""

try:
        return os.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."""

try:
        master_fd, slave_fd = os.openpty()
    except (AttributeError, OSError):
        pass
    else:
        slave_name = os.ttyname(slave_fd)
        os.close(slave_fd)
        return master_fd, slave_name

return _open_terminal()

def _open_terminal():
    """Open pty master and return (master_fd, tty_name)."""
    for x in 'pqrstuvwxyzPQRST':
        for y in '0123456789abcdef':
            pty_name = '/dev/pty' + x + y
            try:
                fd = os.open(pty_name, os.O_RDWR)
            except OSError:
                continue
            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."""

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)
    Fork and make the child a session leader with a controlling terminal."""

try:
        pid, fd = os.forkpty()
    except (AttributeError, OSError):
        pass
    else:
        if pid == CHILD:
            try:
                os.setsid()
            except OSError:
                # os.forkpty() already set us session leader
                pass
        return pid, fd

master_fd, slave_fd = openpty()
    pid = os.fork()
    if pid == CHILD:
        # Establish a new session.
        os.setsid()
        os.close(master_fd)

# Slave becomes stdin/stdout/stderr of child.
        os.dup2(slave_fd, STDIN_FILENO)
        os.dup2(slave_fd, STDOUT_FILENO)
        os.dup2(slave_fd, STDERR_FILENO)
        if (slave_fd > STDERR_FILENO):
            os.close (slave_fd)

# Explicitly open the tty to make it become a controlling tty.
        tmp_fd = os.open(os.ttyname(STDOUT_FILENO), os.O_RDWR)
        os.close(tmp_fd)
    else:
        os.close(slave_fd)

# Parent and child process.
    return pid, master_fd

def _writen(fd, data):
    """Write all the data to a descriptor."""
    while data:
        n = os.write(fd, data)
        data = data[n:]

def _read(fd):
    """Default read function."""
    return os.read(fd, 1024)

def _copy(master_fd, master_read=_read, stdin_read=_read):
    """Parent copy loop.
    Copies
            pty master -> standard output   (master_read)
            standard input -> pty master    (stdin_read)"""
    fds = [master_fd, STDIN_FILENO]
    while True:
        rfds, wfds, xfds = select(fds, [], [])
        if master_fd in rfds:
            data = master_read(master_fd)
            if not data:  # Reached EOF.
                fds.remove(master_fd)
            else:
                os.write(STDOUT_FILENO, data)
        if STDIN_FILENO in rfds:
            data = stdin_read(STDIN_FILENO)
            if not data:
                fds.remove(STDIN_FILENO)
            else:
                _writen(master_fd, data)

def spawn(argv, master_read=_read, stdin_read=_read):
    """Create a spawned process."""
    if type(argv) == type(''):
        argv = (argv,)
    sys.audit('pty.spawn', argv)
    pid, master_fd = fork()
    if pid == CHILD:
        os.execlp(argv[0], *argv)
    try:
        mode = tty.tcgetattr(STDIN_FILENO)
        tty.setraw(STDIN_FILENO)
        restore = 1
    except tty.error:    # This is the same as termios.error
        restore = 0
    try:
        _copy(master_fd, master_read, stdin_read)
    except OSError:
        if restore:
            tty.tcsetattr(STDIN_FILENO, tty.TCSAFLUSH, mode)

os.close(master_fd)
    return os.waitpid(pid, 0)[1]