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Name	Size	Permission	Date
__pycache__	[ DIR ]	drwxr-xr-x	2024-10-21 22:16
asyncio	[ DIR ]	drwxr-xr-x	2024-10-21 22:16
collections	[ DIR ]	drwxr-xr-x	2024-10-21 22:16
concurrent	[ DIR ]	drwxr-xr-x	2024-10-21 22:16
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ctypes	[ DIR ]	drwxr-xr-x	2024-10-21 22:16
curses	[ DIR ]	drwxr-xr-x	2024-10-21 22:16
dbm	[ DIR ]	drwxr-xr-x	2024-10-21 22:16
distutils	[ DIR ]	drwxr-xr-x	2024-10-21 22:16
email	[ DIR ]	drwxr-xr-x	2024-10-21 22:16
encodings	[ DIR ]	drwxr-xr-x	2024-10-21 22:16
ensurepip	[ DIR ]	drwxr-xr-x	2024-10-21 22:16
html	[ DIR ]	drwxr-xr-x	2024-10-21 22:16
http	[ DIR ]	drwxr-xr-x	2024-10-21 22:16
idlelib	[ DIR ]	drwxr-xr-x	2024-10-21 22:16
importlib	[ DIR ]	drwxr-xr-x	2024-10-21 22:16
json	[ DIR ]	drwxr-xr-x	2024-10-21 22:16
lib-dynload	[ DIR ]	drwxr-xr-x	2024-10-21 22:16
lib2to3	[ DIR ]	drwxr-xr-x	2024-10-21 22:16
logging	[ DIR ]	drwxr-xr-x	2024-10-21 22:16
multiprocessing	[ DIR ]	drwxr-xr-x	2024-10-21 22:16
plat-linux	[ DIR ]	drwxr-xr-x	2024-10-21 22:16
pydoc_data	[ DIR ]	drwxr-xr-x	2024-10-21 22:16
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sqlite3	[ DIR ]	drwxr-xr-x	2024-10-21 22:16
test	[ DIR ]	drwxr-xr-x	2024-10-21 22:16
unittest	[ DIR ]	drwxr-xr-x	2024-10-21 22:16
urllib	[ DIR ]	drwxr-xr-x	2024-10-21 22:16
venv	[ DIR ]	drwxr-xr-x	2024-10-21 22:16
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configparser.py	48.53 KB	-rw-r--r--	2024-04-25 14:29
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enum.py	21.03 KB	-rw-r--r--	2024-04-25 14:29
filecmp.py	9.6 KB	-rw-r--r--	2024-04-25 14:29
fileinput.py	14.52 KB	-rw-r--r--	2024-04-25 14:29
fnmatch.py	3.09 KB	-rw-r--r--	2024-04-25 14:29
formatter.py	14.82 KB	-rw-r--r--	2024-04-25 14:29
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ftplib.py	37.63 KB	-rw-r--r--	2024-04-25 14:29
functools.py	27.84 KB	-rw-r--r--	2024-04-25 14:29
genericpath.py	3.79 KB	-rw-r--r--	2024-04-25 14:29
getopt.py	7.31 KB	-rw-r--r--	2024-04-25 14:29
getpass.py	5.93 KB	-rw-r--r--	2024-04-25 14:29
gettext.py	20.28 KB	-rw-r--r--	2024-04-25 14:29
glob.py	3.38 KB	-rw-r--r--	2024-04-25 14:29
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hashlib.py	9.62 KB	-rw-r--r--	2024-04-25 14:29
heapq.py	17.58 KB	-rw-r--r--	2024-04-25 14:29
hmac.py	4.94 KB	-rw-r--r--	2024-04-25 14:29
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ipaddress.py	69.93 KB	-rw-r--r--	2024-04-25 14:29
keyword.py	2.16 KB	-rwxr-xr-x	2024-04-25 14:29
linecache.py	3.86 KB	-rw-r--r--	2024-04-25 14:29
locale.py	72.78 KB	-rw-r--r--	2024-04-25 14:29
lzma.py	18.92 KB	-rw-r--r--	2024-04-25 14:29
macpath.py	5.49 KB	-rw-r--r--	2024-04-25 14:29
macurl2path.py	2.67 KB	-rw-r--r--	2024-04-25 14:29
mailbox.py	76.54 KB	-rw-r--r--	2024-04-25 14:29
mailcap.py	7.26 KB	-rw-r--r--	2024-04-25 14:29
mimetypes.py	20.29 KB	-rw-r--r--	2024-04-25 14:29
modulefinder.py	22.87 KB	-rw-r--r--	2024-04-25 14:29
netrc.py	5.61 KB	-rw-r--r--	2024-04-25 14:29
nntplib.py	42.07 KB	-rw-r--r--	2024-04-25 14:29
ntpath.py	20 KB	-rw-r--r--	2024-04-25 14:29
nturl2path.py	2.39 KB	-rw-r--r--	2024-04-25 14:29
numbers.py	10 KB	-rw-r--r--	2024-04-25 14:29
opcode.py	5.31 KB	-rw-r--r--	2024-04-25 14:29
operator.py	8.98 KB	-rw-r--r--	2024-04-25 14:29
optparse.py	58.93 KB	-rw-r--r--	2024-04-25 14:29
os.py	33.09 KB	-rw-r--r--	2024-04-25 14:29
pathlib.py	41.47 KB	-rw-r--r--	2024-04-25 14:29
pdb.py	59.55 KB	-rwxr-xr-x	2024-04-25 14:29
pickle.py	54.68 KB	-rw-r--r--	2024-04-25 14:29
pickletools.py	89.61 KB	-rw-r--r--	2024-04-25 14:29
pipes.py	8.71 KB	-rw-r--r--	2024-04-25 14:29
pkgutil.py	20.72 KB	-rw-r--r--	2024-04-25 14:29
platform.py	45.65 KB	-rwxr-xr-x	2024-04-25 14:29
plistlib.py	31.05 KB	-rw-r--r--	2024-04-25 14:29
poplib.py	13.98 KB	-rw-r--r--	2024-04-25 14:29
posixpath.py	13.13 KB	-rw-r--r--	2024-04-25 14:29
pprint.py	14.57 KB	-rw-r--r--	2024-04-25 14:29
profile.py	21.5 KB	-rwxr-xr-x	2024-04-25 14:29
pstats.py	25.7 KB	-rw-r--r--	2024-04-25 14:29
pty.py	4.65 KB	-rw-r--r--	2024-04-25 14:29
py_compile.py	6.94 KB	-rw-r--r--	2024-04-25 14:29
pyclbr.py	13.2 KB	-rw-r--r--	2024-04-25 14:29
pydoc.py	100.58 KB	-rwxr-xr-x	2024-04-25 14:29
queue.py	8.63 KB	-rw-r--r--	2024-04-25 14:29
quopri.py	7.08 KB	-rwxr-xr-x	2024-04-25 14:29
random.py	25.47 KB	-rw-r--r--	2024-04-25 14:29
re.py	15.24 KB	-rw-r--r--	2024-04-25 14:29
reprlib.py	4.99 KB	-rw-r--r--	2024-04-25 14:29
rlcompleter.py	5.93 KB	-rw-r--r--	2024-04-25 14:29
runpy.py	10.56 KB	-rw-r--r--	2024-04-25 14:29
sched.py	6.21 KB	-rw-r--r--	2024-04-25 14:29
selectors.py	16.7 KB	-rw-r--r--	2024-04-25 14:29
shelve.py	8.33 KB	-rw-r--r--	2024-04-25 14:29
shlex.py	11.28 KB	-rw-r--r--	2024-04-25 14:29
shutil.py	38.97 KB	-rw-r--r--	2024-04-25 14:29
site.py	21.05 KB	-rw-r--r--	2024-04-25 14:29
smtpd.py	29.28 KB	-rwxr-xr-x	2024-04-25 14:29
smtplib.py	38.04 KB	-rwxr-xr-x	2024-04-25 14:29
sndhdr.py	6.11 KB	-rw-r--r--	2024-04-25 14:29
socket.py	18.62 KB	-rw-r--r--	2024-04-25 14:29
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sre_compile.py	19.44 KB	-rw-r--r--	2024-04-25 14:29
sre_constants.py	7.1 KB	-rw-r--r--	2024-04-25 14:29
sre_parse.py	30.69 KB	-rw-r--r--	2024-04-25 14:29
ssl.py	33.85 KB	-rw-r--r--	2024-04-25 14:29
stat.py	4.3 KB	-rw-r--r--	2024-04-25 14:29
statistics.py	19.1 KB	-rw-r--r--	2024-04-25 14:29
string.py	11.18 KB	-rw-r--r--	2024-04-25 14:29
stringprep.py	12.61 KB	-rw-r--r--	2024-04-25 14:29
struct.py	257 B	-rw-r--r--	2024-04-25 14:29
subprocess.py	63.04 KB	-rw-r--r--	2024-04-25 14:29
sunau.py	17.67 KB	-rw-r--r--	2024-04-25 14:29
symbol.py	1.99 KB	-rwxr-xr-x	2024-04-25 14:29
symtable.py	7.23 KB	-rw-r--r--	2024-04-25 14:29
sysconfig.py	24.05 KB	-rw-r--r--	2024-04-25 14:29
tabnanny.py	11.13 KB	-rwxr-xr-x	2024-04-25 14:29
tarfile.py	89.48 KB	-rwxr-xr-x	2024-04-25 14:29
telnetlib.py	22.53 KB	-rw-r--r--	2024-04-25 14:29
tempfile.py	22 KB	-rw-r--r--	2024-04-25 14:29
textwrap.py	18.83 KB	-rw-r--r--	2024-04-25 14:29
this.py	1003 B	-rw-r--r--	2024-04-25 14:29
threading.py	47.66 KB	-rw-r--r--	2024-04-25 14:29
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tokenize.py	25 KB	-rw-r--r--	2024-04-25 14:29
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traceback.py	10.91 KB	-rw-r--r--	2024-04-25 14:29
tracemalloc.py	15.28 KB	-rw-r--r--	2024-04-25 14:29
tty.py	879 B	-rw-r--r--	2024-04-25 14:29
types.py	5.28 KB	-rw-r--r--	2024-04-25 14:29
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uuid.py	23.17 KB	-rw-r--r--	2024-04-25 14:29
warnings.py	13.97 KB	-rw-r--r--	2024-04-25 14:29
wave.py	17.27 KB	-rw-r--r--	2024-04-25 14:29
weakref.py	18.93 KB	-rw-r--r--	2024-04-25 14:29
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xdrlib.py	5.77 KB	-rw-r--r--	2024-04-25 14:29
zipfile.py	66.94 KB	-rw-r--r--	2024-04-25 14:29

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 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,)
    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]