All standard module in python

__future__          asynchat            help_about          runscript
__main__            asyncio             history             sched
_abc                asyncore            hmac                scrolledlist
_ast                atexit              html                search
_asyncio            audioop             http                searchbase
_bisect             autocomplete        hyperparser         searchengine
_blake2             autocomplete_w      idle                secrets
_bootlocale         autoexpand          idle_test           select
_bz2                base64              idlelib             selectors
_codecs             bdb                 imaplib             setuptools
_codecs_cn          binascii            imghdr              shelve
_codecs_hk          binhex              imp                 shlex
_codecs_iso2022     bisect              importlib           shutil
_codecs_jp          browser             inspect             sidebar
_codecs_kr          builtins            io                  signal
_codecs_tw          bz2                 iomenu              site
_collections        cProfile            ipaddress           smtpd
_collections_abc    calendar            itertools           smtplib
_compat_pickle      calltip             json                sndhdr
_compression        calltip_w           keyword             socket
_contextvars        cgi                 lib2to3             socketserver
_csv                cgitb               linecache           sqlite3
_ctypes             chunk               locale              squeezer
_ctypes_test        cmath               logging             sre_compile
_datetime           cmd                 lzma                sre_constants
_decimal            code                macosx              sre_parse
_distutils_hack     codecontext         mailbox             ssl
_dummy_thread       codecs              mailcap             stackviewer
_elementtree        codeop              mainmenu            stat
_functools          collections         marshal             statistics
_hashlib            colorizer           math                statusbar
_heapq              colorsys            mimetypes           string
_imp                compileall          mmap                stringprep
_io                 concurrent          modulefinder        struct
_json               config              msilib              subprocess
_locale             config_key          msvcrt              sunau
_lsprof             configdialog        multicall           symbol
_lzma               configparser        multiprocessing     symtable
_markupbase         contextlib          netrc               sys
_md5                contextvars         nntplib             sysconfig
_msi                copy                nt                  tabnanny
_multibytecodec     copyreg             ntpath              tarfile
_multiprocessing    crypt               nturl2path          telnetlib
_opcode             csv                 numbers             tempfile