root@judge-host:/# python3 Python 3.5.2 (default, Aug 18 2017, 17:48:00) [GCC 5.4.0 20160609] on linux Type "help", "copyright", "credits" or "license" for more information. >>> help() Welcome to Python 3.5's help utility! If this is your first time using Python, you should definitely check out the tutorial on the Internet at http://docs.python.org/3.5/tutorial/. Enter the name of any module, keyword, or topic to get help on writing Python programs and using Python modules. To quit this help utility and return to the interpreter, just type "quit". To get a list of available modules, keywords, symbols, or topics, type "modules", "keywords", "symbols", or "topics". Each module also comes with a one-line summary of what it does; to list the modules whose name or summary contain a given string such as "spam", type "modules spam". help> modules Please wait a moment while I gather a list of all available modules... CDROM _warnings gi resource DLFCN _weakref glob rlcompleter IN _weakrefset grp runpy TYPES abc gzip sched __future__ aifc hashlib select _ast antigravity heapq selectors _bisect apt hmac shelve _bootlocale apt_inst html shlex _bz2 apt_pkg http shutil _codecs aptsources idlelib signal _codecs_cn argparse imaplib site _codecs_hk array imghdr sitecustomize _codecs_iso2022 ast imp smtpd _codecs_jp asynchat importlib smtplib _codecs_kr asyncio inspect sndhdr _codecs_tw asyncore io socket _collections atexit ipaddress socketserver _collections_abc audioop itertools softwareproperties _compat_pickle base64 json spwd _compression bdb keyword sqlite3 _crypt binascii lib2to3 sre_compile _csv binhex linecache sre_constants _ctypes bisect locale sre_parse _ctypes_test builtins logging ssl _curses bz2 lsb_release stat _curses_panel cProfile lzma statistics _datetime calendar macpath string _dbm cgi macurl2path stringprep _dbus_bindings cgitb mailbox struct _dbus_glib_bindings chunk mailcap subprocess _decimal cmath marshal sunau _dummy_thread cmd math symbol _elementtree code mimetypes symtable _functools codecs mmap sys _hashlib codeop modulefinder sysconfig _heapq collections multiprocessing syslog _imp colorsys netrc tabnanny _io compileall nis tarfile _json concurrent nntplib telnetlib _locale configparser ntpath tempfile _lsprof contextlib nturl2path termios _lzma copy numbers test _markupbase copyreg opcode textwrap _md5 crypt operator this _multibytecodec csv optparse threading _multiprocessing ctypes os time _opcode curl ossaudiodev timeit _operator curses parser tkinter _osx_support datetime pathlib token _pickle dbm pdb tokenize _posixsubprocess dbus pickle trace _pydecimal debconf pickletools traceback _pyio decimal pipes tracemalloc _random difflib pkgutil tty _sha1 dis platform turtle _sha256 distutils plistlib types _sha512 doctest poplib typing _signal dummy_threading posix unicodedata _sitebuiltins email posixpath unittest _socket encodings pprint urllib _sqlite3 enum profile uu _sre errno pstats uuid _ssl faulthandler pty venv _stat fcntl pwd warnings _string filecmp py_compile wave _strptime fileinput pyclbr weakref _struct fnmatch pycurl webbrowser _symtable formatter pydoc wsgiref _sysconfigdata fpectl pydoc_data xdrlib _sysconfigdata_m fractions pyexpat xml _testbuffer ftplib pygtkcompat xmlrpc _testcapi functools queue xxlimited _testimportmultiple gc quopri xxsubtype _testmultiphase genericpath random zipapp _thread getopt re zipfile _threading_local getpass readline zipimport _tracemalloc gettext reprlib zlib Enter any module name to get more help. Or, type "modules spam" to search for modules whose name or summary contain the string "spam".