Python How To: List of standard modules included with Python

Here’s a list of the standard Python modules that are included with Python:

abc: Abstract Base Classes
argparse: Command-line Argument Parsing
array: Efficient arrays of numeric values
asyncio: Asynchronous I/O, event loop, coroutines and tasks
atexit: Exit handlers
base64: Base16, Base32, Base64, Base85 Data Encodings
bisect: Array bisection algorithm
builtins: Built-in objects
cProfile: Deterministic profiling of Python programs
calendar: General calendar-related functions
cgi: Common Gateway Interface support
cgitb: Traceback manager for CGI scripts
chunk: Tools for iterating over iterables by chunk
cmath: Mathematical functions for complex numbers
cmd: Support for line-oriented command interpreters
codecs: Codec registry and base classes
codeop: Compile (possibly incomplete) Python code
collections: Container datatypes
colorsys: Conversions between color systems
compileall: Byte-compile Python source files
concurrent: Executors for concurrent.futures
configparser: Configuration file parser
contextlib: Utilities for with-statement contexts
contextvars: Context Variables
copy: Shallow and deep copy operations
copyreg: Register pickle support functions
crypt: Functionality for one-way hashing of data
csv: CSV File Reading and Writing
ctypes: A foreign function library for Python
dataclasses: Data Classes
datetime: Basic date and time types
decimal: Decimal fixed point and floating point arithmetic
difflib: Helpers for computing deltas
dis: Disassembler for Python bytecode
distutils: Building and installing Python modules
doctest: Test interactive Python examples
email: Package supporting the parsing, manipulation, and generating of email messages
encodings: Encoding and decoding of strings
enum: Support for enumerations
errno: Standard errno system symbols
faulthandler: Dump the Python traceback
fcntl: The fcntl and ioctl system calls
filecmp: File and Directory Comparisons
fileinput: Iterate over lines from multiple input streams
fnmatch: Unix-style filename pattern matching
formatter: Generic output formatting
fractions: Rational Numbers
ftplib: FTP protocol client
functools: Higher-order functions and operations on callable objects
gc: Garbage Collector interface
getopt: C-style parser for command line options
getpass: Portable password input
gettext: Multilingual internationalization services
glob: Unix style pathname pattern expansion
grp: Group Database (getgrnam() and friends)
gzip: Support for gzip files
hashlib: Secure hashes and message digests
heapq: Heap queue algorithm
hmac: Keyed-Hashing for Message Authentication
html: HyperText Markup Language support
http: HTTP protocol client and server
imaplib: IMAP4 protocol client
imghdr: Determine the type of an image file
imp: Deprecated, Importing modules
importlib: A powerful and flexible importer mechanism
inspect: Inspect live objects
io: Core tools for working with streams
ipaddress: IPv4/IPv6 manipulation library
itertools: Functions creating iterators for efficient looping
json: JSON encoder and decoder
keyword: Testing for Python keywords
lib2to3: Automated Python 2 to 3 code translation
linecache: Random access to text lines
locale: Internationalization services
logging: Flexible event logging system for applications
lzma: Compression using the LZMA algorithm
mailbox: Manipulate mailboxes in various formats
mailcap: Mailcap file handling
marshal: Internal Python object serialization
math: Mathematical functions (sin() etc.)
mimetypes: Map filenames to MIME types
mmap: Memory-mapped file support
modulefinder: Find modules used by a script
multiprocessing: Process-based parallelism
netrc: Read netrc files
nntplib: NNTP protocol client
numbers: Numeric abstract base classes
opcode: Operations codes used by the Python interpreter
optparse: Deprecated since version 3.2: Use argparse instead
os: Miscellaneous operating system interfaces
ossaudiodev: Access to OSS-compatible audio devices
parser: Access parse trees for Python source code
pathlib: Object-oriented filesystem paths
pdb: The Python Debugger
pickle: Python object serialization
pickletools: Tools for working with Python pickles
pipes: Interface to shell pipelines
pkgutil: Package extension utility
platform: Platform identification
plistlib: Generate and parse Mac OS X .plist files
poplib: POP3 protocol client
pprint: Data pretty printer
profile: Deterministic profiling of Python programs
pstats: Statistics object for use with the profiler
pty: Pseudo-Terminal Handling for Linux
pwd: Password database (getpwnam() and friends)
py_compile: Compile Python source files to bytecode
queue: A synchronized queue class
quopri: Encode and decode MIME quoted-printable data
random: Generate pseudo-random numbers
re: Regular expression operations
readline: GNU readline support
reprlib: Alternate repr() implementation
resource: Resource usage information
rlcompleter: Completion function for GNU readline
runpy: Locating and running Python modules
sched: Event scheduler
secrets: Generate secure random numbers for managing secrets
select: Waiting for I/O completion
shelve: Python object persistence
shlex: Simple lexical analysis
shutil: High-level file operations
signal: Set handlers for asynchronous events
site: Site-specific configuration hook
smtpd: SMTP server classes
smtplib: SMTP protocol client
sndhdr: Determine type of sound file
socket: Low-level networking interface
socketserver: A framework for network servers
sqlite3: DB-API 2.0 interface for SQLite databases
ssl: TLS/SSL wrapper for socket objects
stat: Interpreting stat() results
statistics: Mathematical statistics functions
string: Common string operations
stringprep: Internet string preparation
struct: Interpret bytes as packed binary data
subprocess: Subprocess management
sunau: Read and write Sun AU files
symbol: Constants used with Python parse trees
symtable: Access to the symbol tables used by the Python compiler
sys: System-specific parameters and functions
sysconfig: Access Python’s configuration information
tabnanny: Indentation validator
tarfile: Read and write tar archive files
telnetlib: Telnet client
tempfile: Generate temporary files and directories
termios: POSIX terminal control
test: Support for unit testing
textwrap: Text wrapping and filling
this: Prints the Zen of Python
threading: Thread-based parallelism
time: Time access and conversions
timeit: Measure execution time of small code snippets
tkinter: Python interface to Tcl/Tk
token: Constants representing terminal nodes of Python parse trees
tokenize: Tokenize Python source code
trace: Trace or track Python statement execution
traceback: Print or retrieve a stack traceback
tracemalloc: Debug tools for tracking memory allocations
tty: Terminal control functions
turtle: Turtle graphics
turtledemo: Demonstration suite for the turtle graphics module
types: Dynamic type creation and names for built-in types
typing: Support for type hints
unicodedata: Unicode Database
unittest: Unit testing framework
urllib: URL handling modules
uu: UUencode and UUdecode files
uuid: UUID objects according to RFC 4122
venv: Creation of virtual environments
warnings: Warning control
wave: Read and write WAV files
weakref: Weak references
webbrowser: Convenient Web-browser controller
wsgiref: WSGI Utilities and Reference Implementation
xdrlib: Encode and decode XDR data
xml: Package containing XML processing modules
xmlrpc: XML-RPC server and client modules
zipapp: Manage executable Python zip archives
zipfile: Work with ZIP archives
zipimport: Import modules from ZIP archives.
zlib: Compression and decompression using the zlib library.

It’s worth noting that not all of these modules are available on all platforms, and some of them may have platform-specific behaviors. Additionally, Python has an extensive library of third-party modules available for download, which can greatly expand its capabilities.