Geforce File Manager

NAME	SIZE	ACTIONS
📁 __pycache__		[ DEL ]
📁 asyncio		[ DEL ]
📁 collections		[ DEL ]
📁 concurrent		[ DEL ]
📁 config-3.12-x86_64-linux-gnu		[ DEL ]
📁 ctypes		[ DEL ]
📁 curses		[ DEL ]
📁 dbm		[ DEL ]
📁 email		[ DEL ]
📁 encodings		[ DEL ]
📁 ensurepip		[ DEL ]
📁 html		[ DEL ]
📁 http		[ DEL ]
📁 importlib		[ DEL ]
📁 json		[ DEL ]
📁 lib-dynload		[ DEL ]
📁 lib2to3		[ DEL ]
📁 logging		[ DEL ]
📁 multiprocessing		[ DEL ]
📁 pydoc_data		[ DEL ]
📁 re		[ DEL ]
📁 site-packages		[ DEL ]
📁 sqlite3		[ DEL ]
📁 tomllib		[ DEL ]
📁 unittest		[ DEL ]
📁 urllib		[ DEL ]
📁 venv		[ DEL ]
📁 wsgiref		[ DEL ]
📁 xml		[ DEL ]
📁 xmlrpc		[ DEL ]
📁 zipfile		[ DEL ]
📁 zoneinfo		[ DEL ]
📄 LICENSE.txt	13,936 B	[ EDIT ] \| [ DEL ]
📄 __future__.py	5,218 B	[ EDIT ] \| [ DEL ]
📄 __hello__.py	227 B	[ EDIT ] \| [ DEL ]
📄 _aix_support.py	4,021 B	[ EDIT ] \| [ DEL ]
📄 _collections_abc.py	32,089 B	[ EDIT ] \| [ DEL ]
📄 _compat_pickle.py	8,761 B	[ EDIT ] \| [ DEL ]
📄 _compression.py	5,681 B	[ EDIT ] \| [ DEL ]
📄 _markupbase.py	14,653 B	[ EDIT ] \| [ DEL ]
📄 _osx_support.py	22,023 B	[ EDIT ] \| [ DEL ]
📄 _py_abc.py	6,189 B	[ EDIT ] \| [ DEL ]
📄 _pydatetime.py	92,087 B	[ EDIT ] \| [ DEL ]
📄 _pydecimal.py	227,283 B	[ EDIT ] \| [ DEL ]
📄 _pyio.py	93,593 B	[ EDIT ] \| [ DEL ]
📄 _pylong.py	10,790 B	[ EDIT ] \| [ DEL ]
📄 _sitebuiltins.py	3,128 B	[ EDIT ] \| [ DEL ]
📄 _strptime.py	28,393 B	[ EDIT ] \| [ DEL ]
📄 _sysconfigdata__linux_x86_64-linux-gnu.py	72,132 B	[ EDIT ] \| [ DEL ]
📄 _threading_local.py	7,220 B	[ EDIT ] \| [ DEL ]
📄 _weakrefset.py	5,893 B	[ EDIT ] \| [ DEL ]
📄 abc.py	6,538 B	[ EDIT ] \| [ DEL ]
📄 aifc.py	34,211 B	[ EDIT ] \| [ DEL ]
📄 antigravity.py	500 B	[ EDIT ] \| [ DEL ]
📄 argparse.py	101,155 B	[ EDIT ] \| [ DEL ]
📄 ast.py	64,452 B	[ EDIT ] \| [ DEL ]
📄 base64.py	20,634 B	[ EDIT ] \| [ DEL ]
📄 bdb.py	33,573 B	[ EDIT ] \| [ DEL ]
📄 bisect.py	3,423 B	[ EDIT ] \| [ DEL ]
📄 bz2.py	11,847 B	[ EDIT ] \| [ DEL ]
📄 cProfile.py	6,555 B	[ EDIT ] \| [ DEL ]
📄 calendar.py	25,864 B	[ EDIT ] \| [ DEL ]
📄 cgi.py	34,418 B	[ EDIT ] \| [ DEL ]
📄 cgitb.py	12,421 B	[ EDIT ] \| [ DEL ]
📄 chunk.py	5,500 B	[ EDIT ] \| [ DEL ]
📄 cmd.py	14,873 B	[ EDIT ] \| [ DEL ]
📄 code.py	10,962 B	[ EDIT ] \| [ DEL ]
📄 codecs.py	36,870 B	[ EDIT ] \| [ DEL ]
📄 codeop.py	5,908 B	[ EDIT ] \| [ DEL ]
📄 colorsys.py	4,062 B	[ EDIT ] \| [ DEL ]
📄 compileall.py	20,507 B	[ EDIT ] \| [ DEL ]
📄 configparser.py	53,789 B	[ EDIT ] \| [ DEL ]
📄 contextlib.py	27,637 B	[ EDIT ] \| [ DEL ]
📄 contextvars.py	129 B	[ EDIT ] \| [ DEL ]
📄 copy.py	8,412 B	[ EDIT ] \| [ DEL ]
📄 copyreg.py	7,614 B	[ EDIT ] \| [ DEL ]
📄 crypt.py	3,913 B	[ EDIT ] \| [ DEL ]
📄 csv.py	16,386 B	[ EDIT ] \| [ DEL ]
📄 dataclasses.py	62,085 B	[ EDIT ] \| [ DEL ]
📄 datetime.py	268 B	[ EDIT ] \| [ DEL ]
📄 decimal.py	2,805 B	[ EDIT ] \| [ DEL ]
📄 difflib.py	83,368 B	[ EDIT ] \| [ DEL ]
📄 dis.py	30,227 B	[ EDIT ] \| [ DEL ]
📄 doctest.py	106,749 B	[ EDIT ] \| [ DEL ]
📄 enum.py	81,540 B	[ EDIT ] \| [ DEL ]
📄 filecmp.py	10,381 B	[ EDIT ] \| [ DEL ]
📄 fileinput.py	15,714 B	[ EDIT ] \| [ DEL ]
📄 fnmatch.py	5,999 B	[ EDIT ] \| [ DEL ]
📄 fractions.py	38,147 B	[ EDIT ] \| [ DEL ]
📄 ftplib.py	34,735 B	[ EDIT ] \| [ DEL ]
📄 functools.py	37,940 B	[ EDIT ] \| [ DEL ]
📄 genericpath.py	5,572 B	[ EDIT ] \| [ DEL ]
📄 getopt.py	7,488 B	[ EDIT ] \| [ DEL ]
📄 getpass.py	5,990 B	[ EDIT ] \| [ DEL ]
📄 gettext.py	21,320 B	[ EDIT ] \| [ DEL ]
📄 glob.py	8,732 B	[ EDIT ] \| [ DEL ]
📄 graphlib.py	9,648 B	[ EDIT ] \| [ DEL ]
📄 gzip.py	25,402 B	[ EDIT ] \| [ DEL ]
📄 hashlib.py	9,683 B	[ EDIT ] \| [ DEL ]
📄 heapq.py	23,024 B	[ EDIT ] \| [ DEL ]
📄 hmac.py	8,043 B	[ EDIT ] \| [ DEL ]
📄 imaplib.py	54,209 B	[ EDIT ] \| [ DEL ]
📄 imghdr.py	4,398 B	[ EDIT ] \| [ DEL ]
📄 inspect.py	127,125 B	[ EDIT ] \| [ DEL ]
📄 io.py	3,582 B	[ EDIT ] \| [ DEL ]
📄 ipaddress.py	81,414 B	[ EDIT ] \| [ DEL ]
📄 keyword.py	1,073 B	[ EDIT ] \| [ DEL ]
📄 linecache.py	5,800 B	[ EDIT ] \| [ DEL ]
📄 locale.py	78,599 B	[ EDIT ] \| [ DEL ]
📄 lzma.py	13,277 B	[ EDIT ] \| [ DEL ]
📄 mailbox.py	78,911 B	[ EDIT ] \| [ DEL ]
📄 mailcap.py	9,333 B	[ EDIT ] \| [ DEL ]
📄 mimetypes.py	23,037 B	[ EDIT ] \| [ DEL ]
📄 modulefinder.py	23,699 B	[ EDIT ] \| [ DEL ]
📄 netrc.py	6,922 B	[ EDIT ] \| [ DEL ]
📄 nntplib.py	41,087 B	[ EDIT ] \| [ DEL ]
📄 ntpath.py	32,324 B	[ EDIT ] \| [ DEL ]
📄 nturl2path.py	2,374 B	[ EDIT ] \| [ DEL ]
📄 numbers.py	11,467 B	[ EDIT ] \| [ DEL ]
📄 opcode.py	13,174 B	[ EDIT ] \| [ DEL ]
📄 operator.py	10,965 B	[ EDIT ] \| [ DEL ]
📄 optparse.py	60,369 B	[ EDIT ] \| [ DEL ]
📄 os.py	40,821 B	[ EDIT ] \| [ DEL ]
📄 pathlib.py	51,052 B	[ EDIT ] \| [ DEL ]
📄 pdb.py	70,297 B	[ EDIT ] \| [ DEL ]
📄 pickle.py	66,911 B	[ EDIT ] \| [ DEL ]
📄 pickletools.py	94,052 B	[ EDIT ] \| [ DEL ]
📄 pipes.py	8,978 B	[ EDIT ] \| [ DEL ]
📄 pkgutil.py	18,281 B	[ EDIT ] \| [ DEL ]
📄 platform.py	43,388 B	[ EDIT ] \| [ DEL ]
📄 plistlib.py	28,342 B	[ EDIT ] \| [ DEL ]
📄 poplib.py	14,742 B	[ EDIT ] \| [ DEL ]
📄 posixpath.py	17,483 B	[ EDIT ] \| [ DEL ]
📄 pprint.py	24,158 B	[ EDIT ] \| [ DEL ]
📄 profile.py	23,092 B	[ EDIT ] \| [ DEL ]
📄 pstats.py	29,289 B	[ EDIT ] \| [ DEL ]
📄 pty.py	6,137 B	[ EDIT ] \| [ DEL ]
📄 py_compile.py	7,837 B	[ EDIT ] \| [ DEL ]
📄 pyclbr.py	11,396 B	[ EDIT ] \| [ DEL ]
📄 pydoc.py	113,508 B	[ EDIT ] \| [ DEL ]
📄 queue.py	11,496 B	[ EDIT ] \| [ DEL ]
📄 quopri.py	7,183 B	[ EDIT ] \| [ DEL ]
📄 random.py	34,689 B	[ EDIT ] \| [ DEL ]
📄 reprlib.py	7,148 B	[ EDIT ] \| [ DEL ]
📄 rlcompleter.py	7,827 B	[ EDIT ] \| [ DEL ]
📄 runpy.py	12,885 B	[ EDIT ] \| [ DEL ]
📄 sched.py	6,351 B	[ EDIT ] \| [ DEL ]
📄 secrets.py	1,984 B	[ EDIT ] \| [ DEL ]
📄 selectors.py	19,671 B	[ EDIT ] \| [ DEL ]
📄 shelve.py	8,560 B	[ EDIT ] \| [ DEL ]
📄 shlex.py	13,353 B	[ EDIT ] \| [ DEL ]
📄 shutil.py	56,762 B	[ EDIT ] \| [ DEL ]
📄 signal.py	2,495 B	[ EDIT ] \| [ DEL ]
📄 site.py	23,439 B	[ EDIT ] \| [ DEL ]
📄 smtplib.py	43,531 B	[ EDIT ] \| [ DEL ]
📄 sndhdr.py	7,448 B	[ EDIT ] \| [ DEL ]
📄 socket.py	37,815 B	[ EDIT ] \| [ DEL ]
📄 socketserver.py	28,065 B	[ EDIT ] \| [ DEL ]
📄 sre_compile.py	231 B	[ EDIT ] \| [ DEL ]
📄 sre_constants.py	232 B	[ EDIT ] \| [ DEL ]
📄 sre_parse.py	229 B	[ EDIT ] \| [ DEL ]
📄 ssl.py	50,904 B	[ EDIT ] \| [ DEL ]
📄 stat.py	5,485 B	[ EDIT ] \| [ DEL ]
📄 statistics.py	50,227 B	[ EDIT ] \| [ DEL ]
📄 string.py	11,786 B	[ EDIT ] \| [ DEL ]
📄 stringprep.py	12,917 B	[ EDIT ] \| [ DEL ]
📄 struct.py	257 B	[ EDIT ] \| [ DEL ]
📄 subprocess.py	88,747 B	[ EDIT ] \| [ DEL ]
📄 sunau.py	18,478 B	[ EDIT ] \| [ DEL ]
📄 symtable.py	12,477 B	[ EDIT ] \| [ DEL ]
📄 sysconfig.py	33,773 B	[ EDIT ] \| [ DEL ]
📄 tabnanny.py	11,531 B	[ EDIT ] \| [ DEL ]
📄 tarfile.py	114,250 B	[ EDIT ] \| [ DEL ]
📄 telnetlib.py	23,334 B	[ EDIT ] \| [ DEL ]
📄 tempfile.py	32,386 B	[ EDIT ] \| [ DEL ]
📄 textwrap.py	19,718 B	[ EDIT ] \| [ DEL ]
📄 this.py	1,003 B	[ EDIT ] \| [ DEL ]
📄 threading.py	59,742 B	[ EDIT ] \| [ DEL ]
📄 timeit.py	13,463 B	[ EDIT ] \| [ DEL ]
📄 token.py	2,511 B	[ EDIT ] \| [ DEL ]
📄 tokenize.py	21,570 B	[ EDIT ] \| [ DEL ]
📄 trace.py	29,352 B	[ EDIT ] \| [ DEL ]
📄 traceback.py	46,393 B	[ EDIT ] \| [ DEL ]
📄 tracemalloc.py	18,047 B	[ EDIT ] \| [ DEL ]
📄 tty.py	2,035 B	[ EDIT ] \| [ DEL ]
📄 types.py	10,993 B	[ EDIT ] \| [ DEL ]
📄 typing.py	118,836 B	[ EDIT ] \| [ DEL ]
📄 uu.py	7,341 B	[ EDIT ] \| [ DEL ]
📄 uuid.py	29,656 B	[ EDIT ] \| [ DEL ]
📄 warnings.py	21,909 B	[ EDIT ] \| [ DEL ]
📄 wave.py	22,769 B	[ EDIT ] \| [ DEL ]
📄 weakref.py	21,513 B	[ EDIT ] \| [ DEL ]
📄 webbrowser.py	24,141 B	[ EDIT ] \| [ DEL ]
📄 xdrlib.py	5,942 B	[ EDIT ] \| [ DEL ]
📄 zipapp.py	7,543 B	[ EDIT ] \| [ DEL ]
📄 zipimport.py	27,840 B	[ EDIT ] \| [ DEL ]

[ CLOSE ]

EDIT: poplib.py

"""A POP3 client class.

Based on the J. Myers POP3 draft, Jan. 96
"""

# Author: David Ascher <david_ascher@brown.edu>
#         [heavily stealing from nntplib.py]
# Updated: Piers Lauder <piers@cs.su.oz.au> [Jul '97]
# String method conversion and test jig improvements by ESR, February 2001.
# Added the POP3_SSL class. Methods loosely based on IMAP_SSL. Hector Urtubia <urtubia@mrbook.org> Aug 2003

# Example (see the test function at the end of this file)

# Imports

import errno
import re
import socket
import sys

try:
    import ssl
    HAVE_SSL = True
except ImportError:
    HAVE_SSL = False

__all__ = ["POP3","error_proto"]

# Exception raised when an error or invalid response is received:

class error_proto(Exception): pass

# Standard Port
POP3_PORT = 110

# POP SSL PORT
POP3_SSL_PORT = 995

# Line terminators (we always output CRLF, but accept any of CRLF, LFCR, LF)
CR = b'\r'
LF = b'\n'
CRLF = CR+LF

# maximal line length when calling readline(). This is to prevent
# reading arbitrary length lines. RFC 1939 limits POP3 line length to
# 512 characters, including CRLF. We have selected 2048 just to be on
# the safe side.
_MAXLINE = 2048

class POP3:

"""This class supports both the minimal and optional command sets.
    Arguments can be strings or integers (where appropriate)
    (e.g.: retr(1) and retr('1') both work equally well.

Minimal Command Set:
            USER name               user(name)
            PASS string             pass_(string)
            STAT                    stat()
            LIST [msg]              list(msg = None)
            RETR msg                retr(msg)
            DELE msg                dele(msg)
            NOOP                    noop()
            RSET                    rset()
            QUIT                    quit()

Optional Commands (some servers support these):
            RPOP name               rpop(name)
            APOP name digest        apop(name, digest)
            TOP msg n               top(msg, n)
            UIDL [msg]              uidl(msg = None)
            CAPA                    capa()
            STLS                    stls()
            UTF8                    utf8()

Raises one exception: 'error_proto'.

Instantiate with:
            POP3(hostname, port=110)

NB:     the POP protocol locks the mailbox from user
            authorization until QUIT, so be sure to get in, suck
            the messages, and quit, each time you access the
            mailbox.

POP is a line-based protocol, which means large mail
            messages consume lots of python cycles reading them
            line-by-line.

If it's available on your mail server, use IMAP4
            instead, it doesn't suffer from the two problems
            above.
    """

encoding = 'UTF-8'

def __init__(self, host, port=POP3_PORT,
                 timeout=socket._GLOBAL_DEFAULT_TIMEOUT):
        self.host = host
        self.port = port
        self._tls_established = False
        sys.audit("poplib.connect", self, host, port)
        self.sock = self._create_socket(timeout)
        self.file = self.sock.makefile('rb')
        self._debugging = 0
        self.welcome = self._getresp()

def _create_socket(self, timeout):
        if timeout is not None and not timeout:
            raise ValueError('Non-blocking socket (timeout=0) is not supported')
        return socket.create_connection((self.host, self.port), timeout)

def _putline(self, line):
        if self._debugging > 1: print('*put*', repr(line))
        sys.audit("poplib.putline", self, line)
        self.sock.sendall(line + CRLF)

# Internal: send one command to the server (through _putline())

def _putcmd(self, line):
        if self._debugging: print('*cmd*', repr(line))
        line = bytes(line, self.encoding)
        if re.search(b'[\x00-\x1F\x7F]', line):
            raise ValueError('Control characters not allowed in commands')
        self._putline(line)

# Internal: return one line from the server, stripping CRLF.
    # This is where all the CPU time of this module is consumed.
    # Raise error_proto('-ERR EOF') if the connection is closed.

def _getline(self):
        line = self.file.readline(_MAXLINE + 1)
        if len(line) > _MAXLINE:
            raise error_proto('line too long')

if self._debugging > 1: print('*get*', repr(line))
        if not line: raise error_proto('-ERR EOF')
        octets = len(line)
        # server can send any combination of CR & LF
        # however, 'readline()' returns lines ending in LF
        # so only possibilities are ...LF, ...CRLF, CR...LF
        if line[-2:] == CRLF:
            return line[:-2], octets
        if line[:1] == CR:
            return line[1:-1], octets
        return line[:-1], octets

# Internal: get a response from the server.
    # Raise 'error_proto' if the response doesn't start with '+'.

def _getresp(self):
        resp, o = self._getline()
        if self._debugging > 1: print('*resp*', repr(resp))
        if not resp.startswith(b'+'):
            raise error_proto(resp)
        return resp

# Internal: get a response plus following text from the server.

def _getlongresp(self):
        resp = self._getresp()
        list = []; octets = 0
        line, o = self._getline()
        while line != b'.':
            if line.startswith(b'..'):
                o = o-1
                line = line[1:]
            octets = octets + o
            list.append(line)
            line, o = self._getline()
        return resp, list, octets

# Internal: send a command and get the response

def _shortcmd(self, line):
        self._putcmd(line)
        return self._getresp()

# Internal: send a command and get the response plus following text

def _longcmd(self, line):
        self._putcmd(line)
        return self._getlongresp()

# These can be useful:

def getwelcome(self):
        return self.welcome

def set_debuglevel(self, level):
        self._debugging = level

# Here are all the POP commands:

def user(self, user):
        """Send user name, return response

(should indicate password required).
        """
        return self._shortcmd('USER %s' % user)

def pass_(self, pswd):
        """Send password, return response

(response includes message count, mailbox size).

NB: mailbox is locked by server from here to 'quit()'
        """
        return self._shortcmd('PASS %s' % pswd)

def stat(self):
        """Get mailbox status.

Result is tuple of 2 ints (message count, mailbox size)
        """
        retval = self._shortcmd('STAT')
        rets = retval.split()
        if self._debugging: print('*stat*', repr(rets))

# Check if the response has enough elements
        # RFC 1939 requires at least 3 elements (+OK, message count, mailbox size)
        # but allows additional data after the required fields
        if len(rets) < 3:
            raise error_proto("Invalid STAT response format")

try:
            numMessages = int(rets[1])
            sizeMessages = int(rets[2])
        except ValueError:
            raise error_proto("Invalid STAT response data: non-numeric values")

return (numMessages, sizeMessages)

def list(self, which=None):
        """Request listing, return result.

Result without a message number argument is in form
        ['response', ['mesg_num octets', ...], octets].

Result when a message number argument is given is a
        single response: the "scan listing" for that message.
        """
        if which is not None:
            return self._shortcmd('LIST %s' % which)
        return self._longcmd('LIST')

def retr(self, which):
        """Retrieve whole message number 'which'.

Result is in form ['response', ['line', ...], octets].
        """
        return self._longcmd('RETR %s' % which)

def dele(self, which):
        """Delete message number 'which'.

Result is 'response'.
        """
        return self._shortcmd('DELE %s' % which)

def noop(self):
        """Does nothing.

One supposes the response indicates the server is alive.
        """
        return self._shortcmd('NOOP')

def rset(self):
        """Unmark all messages marked for deletion."""
        return self._shortcmd('RSET')

def quit(self):
        """Signoff: commit changes on server, unlock mailbox, close connection."""
        resp = self._shortcmd('QUIT')
        self.close()
        return resp

def close(self):
        """Close the connection without assuming anything about it."""
        try:
            file = self.file
            self.file = None
            if file is not None:
                file.close()
        finally:
            sock = self.sock
            self.sock = None
            if sock is not None:
                try:
                    sock.shutdown(socket.SHUT_RDWR)
                except OSError as exc:
                    # The server might already have closed the connection.
                    # On Windows, this may result in WSAEINVAL (error 10022):
                    # An invalid operation was attempted.
                    if (exc.errno != errno.ENOTCONN
                       and getattr(exc, 'winerror', 0) != 10022):
                        raise
                finally:
                    sock.close()

#__del__ = quit

# optional commands:

def rpop(self, user):
        """Send RPOP command to access the mailbox with an alternate user."""
        return self._shortcmd('RPOP %s' % user)

timestamp = re.compile(br'\+OK.[^<]*(<.*>)')

def apop(self, user, password):
        """Authorisation

- only possible if server has supplied a timestamp in initial greeting.

Args:
                user     - mailbox user;
                password - mailbox password.

NB: mailbox is locked by server from here to 'quit()'
        """
        secret = bytes(password, self.encoding)
        m = self.timestamp.match(self.welcome)
        if not m:
            raise error_proto('-ERR APOP not supported by server')
        import hashlib
        digest = m.group(1)+secret
        digest = hashlib.md5(digest).hexdigest()
        return self._shortcmd('APOP %s %s' % (user, digest))

def top(self, which, howmuch):
        """Retrieve message header of message number 'which'
        and first 'howmuch' lines of message body.

Result is in form ['response', ['line', ...], octets].
        """
        return self._longcmd('TOP %s %s' % (which, howmuch))

def uidl(self, which=None):
        """Return message digest (unique id) list.

If 'which', result contains unique id for that message
        in the form 'response mesgnum uid', otherwise result is
        the list ['response', ['mesgnum uid', ...], octets]
        """
        if which is not None:
            return self._shortcmd('UIDL %s' % which)
        return self._longcmd('UIDL')

def utf8(self):
        """Try to enter UTF-8 mode (see RFC 6856). Returns server response.
        """
        return self._shortcmd('UTF8')

def capa(self):
        """Return server capabilities (RFC 2449) as a dictionary
        >>> c=poplib.POP3('localhost')
        >>> c.capa()
        {'IMPLEMENTATION': ['Cyrus', 'POP3', 'server', 'v2.2.12'],
         'TOP': [], 'LOGIN-DELAY': ['0'], 'AUTH-RESP-CODE': [],
         'EXPIRE': ['NEVER'], 'USER': [], 'STLS': [], 'PIPELINING': [],
         'UIDL': [], 'RESP-CODES': []}
        >>>

Really, according to RFC 2449, the cyrus folks should avoid
        having the implementation split into multiple arguments...
        """
        def _parsecap(line):
            lst = line.decode('ascii').split()
            return lst[0], lst[1:]

caps = {}
        try:
            resp = self._longcmd('CAPA')
            rawcaps = resp[1]
            for capline in rawcaps:
                capnm, capargs = _parsecap(capline)
                caps[capnm] = capargs
        except error_proto:
            raise error_proto('-ERR CAPA not supported by server')
        return caps

def stls(self, context=None):
        """Start a TLS session on the active connection as specified in RFC 2595.

context - a ssl.SSLContext
        """
        if not HAVE_SSL:
            raise error_proto('-ERR TLS support missing')
        if self._tls_established:
            raise error_proto('-ERR TLS session already established')
        caps = self.capa()
        if not 'STLS' in caps:
            raise error_proto('-ERR STLS not supported by server')
        if context is None:
            context = ssl._create_stdlib_context()
        resp = self._shortcmd('STLS')
        self.sock = context.wrap_socket(self.sock,
                                        server_hostname=self.host)
        self.file = self.sock.makefile('rb')
        self._tls_established = True
        return resp

if HAVE_SSL:

class POP3_SSL(POP3):
        """POP3 client class over SSL connection

Instantiate with: POP3_SSL(hostname, port=995, context=None)

hostname - the hostname of the pop3 over ssl server
               port - port number
               context - a ssl.SSLContext

See the methods of the parent class POP3 for more documentation.
        """

def __init__(self, host, port=POP3_SSL_PORT,
                     *, timeout=socket._GLOBAL_DEFAULT_TIMEOUT, context=None):
            if context is None:
                context = ssl._create_stdlib_context()
            self.context = context
            POP3.__init__(self, host, port, timeout)

def _create_socket(self, timeout):
            sock = POP3._create_socket(self, timeout)
            sock = self.context.wrap_socket(sock,
                                            server_hostname=self.host)
            return sock

def stls(self, context=None):
            """The method unconditionally raises an exception since the
            STLS command doesn't make any sense on an already established
            SSL/TLS session.
            """
            raise error_proto('-ERR TLS session already established')

__all__.append("POP3_SSL")

if __name__ == "__main__":
    import sys
    a = POP3(sys.argv[1])
    print(a.getwelcome())
    a.user(sys.argv[2])
    a.pass_(sys.argv[3])
    a.list()
    (numMsgs, totalSize) = a.stat()
    for i in range(1, numMsgs + 1):
        (header, msg, octets) = a.retr(i)
        print("Message %d:" % i)
        for line in msg:
            print('   ' + line)
        print('-----------------------')
    a.quit()