Library	Description	MicroPython Status	Notes
future	Future statement definitions	✅	micropython-lib
main	The environment where the top-level script is run.	✅
_thread	Low-level threading API.	✅	See Threads for more info.
abc	Abstract base classes according to :pep:`3119`.	❌	Placeholder in micropython-lib
argparse	Command-line option and argument parsing library.	✅	micropython-lib
array	Space efficient arrays of uniformly typed numeric values.	✅	built-in
ast	Abstract Syntax Tree classes and manipulation.	❌	Requires `_ast` to be implemented in core MicroPython.
asyncio	Asynchronous I/O.	✅	built-in
atexit	Register and execute cleanup functions.	❌	`atexit` module itself is not implemented in MicroPython, but the `atexit.register()` functionality is largely implemented via `sys.atexit()`
base64	RFC 3548: Base16, Base32, Base64 Data Encodings; Base85 and Ascii85	✅	micropython-lib
bdb	Debugger framework.	❌
binascii	Tools for converting between binary and various ASCII-encoded binary representations.	✅	built-in and micropython-lib
binhex	Encode and decode files in binhex4 format.	❌	Deprecated since CPython 3.9
bisect	Array bisection algorithms for binary searching.	✅	micropython-lib
builtins	The module that provides the built-in namespace.	✅	built-in
bz2	Interfaces for bzip2 compression and decompression.	❌
calendar	Functions for working with calendars, including some emulation of the Unix cal program.	❌	See #521
cmath	Mathematical functions for complex numbers.	✅	built-in
cmd	Build line-oriented command interpreters.	✅	micropython-lib
code	Facilities to implement read-eval-print loops.	❌
codecs	Encode and decode data and streams.	❌
codeop	Compile (possibly incomplete) Python code.	❌
collections	Container datatypes	🟡	See Collections module for more info.
collections.abc	Abstract base classes for containers	❌
colorsys	Conversion functions between RGB and other color systems.	🟡	Implementation proposed in Micropython Lib #452
compileall	Tools for byte-compiling all Python source files in a directory tree.	❌
concurrent		?
concurrent.futures	Execute computations concurrently using threads or processes.	?
configparser	Configuration file parser.	?
contextlib	Utilities for with-statement contexts.	✅	micropython-lib
contextvars	Context Variables	?
copy	Shallow and deep copy operations.	✅	micropython-lib
copyreg	Register pickle support functions.	?
cProfile		?
csv	Write and read tabular data to and from delimited files.	❌	CPython splits the implementation into a Python module, csv.py, and a C module, _csv.c. It might be possible to port _csv.c and use csv.py directly.
ctypes	A foreign function library for Python.	🟡	See uctypes. Different to CPython to reduce memory use.
curses	An interface to the curses library, providing portable terminal handling.	?
curses.ascii	Constants and set-membership functions for ASCII characters.	✅	micropython-lib
curses.panel	A panel stack extension that adds depth to curses windows.	?
curses.textpad	Emacs-like input editing in a curses window.	?
dataclasses	Generate special methods on user-defined classes.	?
datetime	Basic date and time types.	✅	micropython-lib
dbm	Interfaces to various Unix "database" formats.	?
dbm.dumb	Portable implementation of the simple DBM interface.	?
dbm.gnu	GNU's reinterpretation of dbm.	?
dbm.ndbm	The standard "database" interface, based on ndbm.	?
decimal	Implementation of the General Decimal Arithmetic Specification.	🟡	See third-part mpy-decimal.
difflib	Helpers for computing differences between objects.	?
dis	Disassembler for Python bytecode.	?
distutils and submodules	Support for building and installing Python modules into an existing Python installation.	❌
doctest	Test pieces of code within docstrings.	?
email	Package supporting the parsing, manipulating, and generating email messages.	?
email.charset	Character Sets	✅	micropython-lib
email.contentmanager	Storing and Retrieving Content from MIME Parts	?
email.encoders	Encoders for email message payloads.	✅	micropython-lib
email.errors	The exception classes used by the email package.	✅	micropython-lib
email.generator	Generate flat text email messages from a message structure.	?
email.header	Representing non-ASCII headers	✅	micropython-lib
email.headerregistry	Automatic Parsing of headers based on the field name	?
email.iterators	Iterate over a message object tree.	?
email.message	The base class representing email messages.	✅	micropython-lib
email.mime	Build MIME messages.	?
email.parser	Parse flat text email messages to produce a message object structure.	✅	micropython-lib
email.policy	Controlling the parsing and generating of messages	?
email.utils	Miscellaneous email package utilities.	✅	micropython-lib
encodings		?
encodings.idna	Internationalized Domain Names implementation	?
encodings.mbcs	Windows ANSI codepage	?
encodings.utf_8_sig	UTF-8 codec with BOM signature	?
ensurepip	Bootstrapping the "pip" installer into an existing Python installation or virtual environment.	?
enum	Implementation of an enumeration class.	❌	Metaclasses are not yet supported in MicroPython and it's challenging to provide enum support without it.
errno	Standard errno system symbols.	✅	built-in and micropython-lib
faulthandler	Dump the Python traceback.	?
fcntl	The fcntl() and ioctl() system calls.	?
filecmp	Compare files efficiently.	?
fileinput	Loop over standard input or a list of files.	?
fnmatch	Unix shell style filename pattern matching.	✅	micropython-lib
formatter	Deprecated: Generic output formatter and device interface.	?
fractions	Rational numbers.	?	See WIP micropython-fractions
ftplib	FTP protocol client (requires sockets).	?
functools	Higher-order functions and operations on callable objects.	✅	micropython-lib
gc	Interface to the cycle-detecting garbage collector.	✅	built-in
getopt	Portable parser for command line options; support both short and long option names.	✅	micropython-lib
getpass	Portable reading of passwords and retrieval of the userid.	?
gettext	Multilingual internationalization services.	?
glob	Unix shell style pathname pattern expansion.	✅	micropython-lib
graphlib	Functionality to operate with graph-like structures	?
grp	The group database (getgrnam() and friends).	?
gzip	Interfaces for gzip compression and decompression using file objects.	✅	micropython-lib
hashlib	Secure hash and message digest algorithms.	✅	built-in and micropython-lib
heapq	Heap queue algorithm (a.k.a. priority queue).	✅	built-in and micropython-lib
hmac	Keyed-Hashing for Message Authentication (HMAC) implementation	✅	micropython-lib
html	Helpers for manipulating HTML.	✅	micropython-lib
html.entities	Definitions of HTML general entities.	✅	micropython-lib
html.parser	A simple parser that can handle HTML and XHTML.	✅	micropython-lib
http	HTTP status codes and messages	?
http.client	HTTP and HTTPS protocol client (requires sockets).	✅	micropython-lib
http.cookiejar	Classes for automatic handling of HTTP cookies.	?
http.cookies	Support for HTTP state management (cookies).	?
http.server	HTTP server and request handlers.	?
imaplib	IMAP4 protocol client (requires sockets).	?
imp	Deprecated: Access the implementation of the import statement.	?
importlib	The implementation of the import machinery.	?
importlib.abc	Abstract base classes related to import	?
importlib.machinery	Importers and path hooks	?
importlib.metadata	The implementation of the importlib metadata.	?
importlib.resources	Package resource reading, opening, and access	?
importlib.util	Utility code for importers	?
inspect	Extract information and source code from live objects.	❌	Placeholder in micropython-lib
io	Core tools for working with streams.	✅	built-in and micropython-lib
ipaddress	IPv4/IPv6 manipulation library.	?
itertools	Functions creating iterators for efficient looping.	✅	micropython-lib
json	Encode and decode the JSON format.	✅	built-in and micropython-lib
json.tool	A command line to validate and pretty-print JSON.	?
keyword	Test whether a string is a keyword in Python.	✅	micropython-lib
lib2to3	The 2to3 library	?
linecache	Provides random access to individual lines from text files.	❌
locale	Internationalization services.	✅	micropython-lib
logging	Flexible event logging system for applications.	✅	micropython-lib
logging.config	Configuration of the logging module.	?
logging.handlers	Handlers for the logging module.	?
lzma	A Python wrapper for the liblzma compression library.	?
mailbox	Manipulate mailboxes in various formats	?
mailcap	Mailcap file handling.	?
marshal	Convert Python objects to streams of bytes and back (with different constraints).	?
math	Mathematical functions (sin() etc.).	✅	built-in
mimetypes	Mapping of filename extensions to MIME types.	?
mmap	Interface to memory-mapped files for Unix and Windows.	?
modulefinder	Find modules used by a script.	?
msvcrt	Miscellaneous useful routines from the MS VC++ runtime.	?
multiprocessing	Process-based parallelism.	?
multiprocessing.connection	API for dealing with sockets.	?
multiprocessing.dummy	Dumb wrapper around threading.	?
multiprocessing.managers	Share data between process with shared objects.	?
multiprocessing.pool	Create pools of processes.	?
multiprocessing.shared_memory	Provides shared memory for direct access across processes.	?
multiprocessing.sharedctypes	Allocate ctypes objects from shared memory.	?
netrc	Loading of .netrc files.	?
numbers	Numeric abstract base classes (Complex, Real, Integral, etc.).	?
operator	Functions corresponding to the standard operators.	✅	micropython-lib
optparse	Deprecated: Command-line option parsing library.	?
os	Miscellaneous operating system interfaces.	✅	built-in and micropython-lib
os.path	Operations on pathnames.	✅	micropython-lib
parser	Access parse trees for Python source code.	?
pathlib	Object-oriented filesystem paths	?
pdb	The Python debugger for interactive interpreters.	?	See WIP micropython-lib PR #499
pickle	Convert Python objects to streams of bytes and back.	✅	micropython-lib
pickletools	Contains extensive comments about the pickle protocols and pickle-machine opcodes, as well as some useful functions.	?
pkgutil	Utilities for the import system.	✅	micropython-lib
platform	Retrieves as much platform identifying data as possible.	?
plistlib	Generate and parse Apple plist files.	?
poplib	POP3 protocol client (requires sockets).	?
posix	The most common POSIX system calls (normally used via module os).	?
pprint	Data pretty printer.	✅	micropython-lib
profile	Python source profiler.	?
pstats	Statistics object for use with the profiler.	?
pty	Pseudo-Terminal Handling for Linux.	?
pwd	The password database (getpwnam() and friends).	?
py_compile	Generate byte-code files from Python source files.	?
pyclbr	Supports information extraction for a Python module browser.	?
pydoc	Documentation generator and online help system.	?
queue	A synchronized queue class.	?
quopri	Encode and decode files using the MIME quoted-printable encoding.	✅	micropython-lib
random	Generate pseudo-random numbers with various common distributions.	✅	built-in and micropython-lib
re	Regular expression operations.	✅	built-in
readline	GNU readline support for Python.	?
reprlib	Alternate repr() implementation with size limits.	?
resource	An interface to provide resource usage information on the current process.	?
rlcompleter	Python identifier completion, suitable for the GNU readline library.	?
runpy	Locate and run Python modules without importing them first.	?
sched	General purpose event scheduler.	?
secrets	Generate secure random numbers for managing secrets.	?
select	Wait for I/O completion on multiple streams.	✅	built-in
selectors	High-level I/O multiplexing.	?
shelve	Python object persistence.	?
shlex	Simple lexical analysis for Unix shell-like languages.	?
shutil	High-level file operations, including copying.	✅	micropython-lib
signal	Set handlers for asynchronous events.	?
site	Module responsible for site-specific configuration.	?
smtplib	SMTP protocol client (requires sockets).	?
socket	Low-level networking interface.	✅	built-in and micropython-lib
socketserver	A framework for network servers.	?
sqlite3	A DB-API 2.0 implementation using SQLite 3.x.	?
ssl	TLS/SSL wrapper for socket objects	✅	built-in and micropython-lib
stat	Utilities for interpreting the results of os.stat(), os.lstat() and os.fstat().	✅	micropython-lib
statistics	Mathematical statistics functions	?
string	Common string operations.	✅	micropython-lib
stringprep	String preparation, as per RFC 3453	?
struct	Interpret bytes as packed binary data.	✅	built-in and micropython-lib
subprocess	Subprocess management.	?
symbol	Constants representing internal nodes of the parse tree.	?
symtable	Interface to the compiler's internal symbol tables.	?
sys	Access system-specific parameters and functions.	✅	built-in
sysconfig	Python's configuration information	?
syslog	An interface to the Unix syslog library routines.	?
tabnanny	Tool for detecting white space related problems in Python source files in a directory tree.	?
tarfile	Read and write tar-format archive files.	?
tempfile	Generate temporary files and directories.	?
termios	POSIX style tty control.	?
test	Regression tests package containing the testing suite for Python.	?
test.support	Support for Python's regression test suite.	?
test.support.bytecode_helper	Support tools for testing correct bytecode generation.	?
test.support.script_helper	Support for Python's script execution tests.	?
test.support.socket_helper	Support for socket tests.	?
textwrap	Text wrapping and filling	✅	micropython-lib
threading	Thread-based parallelism.	✅	micropython-lib
time	Time access and conversions.	✅	built-in
timeit	Measure the execution time of small code snippets.	✅	micropython-lib
tkinter and submodules	Interface to Tcl/Tk for graphical user interfaces	❌
token	Constants representing terminal nodes of the parse tree.	?
tokenize	Lexical scanner for Python source code.	❌
trace	Trace or track Python statement execution.	?
traceback	Print or retrieve a stack traceback.	✅	micropython-lib
tracemalloc	Trace memory allocations.	?
tty	Utility functions that perform common terminal control operations.	?
turtle	An educational framework for simple graphics applications	?
turtledemo	A viewer for example turtle scripts	?
types	Names for built-in types.	🟡	micropython-lib (missing at least `MappingProxyType`, maybe more)
typing	Support for type hints (see :pep:`484`).	?
unicodedata	Access the Unicode Database.	?
unittest	Unit testing framework for Python.	✅	micropython-lib
unittest.mock	Mock object library.	?
urllib		?
urllib.error	Exception classes raised by urllib.request.	?
urllib.parse	Parse URLs into or assemble them from components.	✅	micropython-lib
urllib.request	Extensible library for opening URLs.	?
urllib.response	Response classes used by urllib.	?
urllib.robotparser	Load a robots.txt file and answer questions about fetchability of other URLs.	?
uuid	UUID objects (universally unique identifiers) according to RFC 4122	?
venv	Creation of virtual environments.	?
warnings	Issue warning messages and control their disposition.	✅	micropython-lib
wave	Provide an interface to the WAV sound format.	?
weakref	Support for weak references and weak dictionaries.	?
webbrowser	Easy-to-use controller for Web browsers.	?
winreg	Routines and objects for manipulating the Windows registry.	?
winsound	Access to the sound-playing machinery for Windows.	?
wsgiref	WSGI Utilities and Reference Implementation.	?
wsgiref.handlers	WSGI server/gateway base classes.	?
wsgiref.headers	WSGI response header tools.	?
wsgiref.simple_server	A simple WSGI HTTP server.	?
wsgiref.util	WSGI environment utilities.	?
wsgiref.validate	WSGI conformance checker.	?
xml	Package containing XML processing modules	?
xml.dom	Document Object Model API for Python.	?
xml.dom.minidom	Minimal Document Object Model (DOM) implementation.	?
xml.dom.pulldom	Support for building partial DOM trees from SAX events.	?
xml.etree.ElementTree	Implementation of the ElementTree API.	?
xml.parsers.expat	An interface to the Expat non-validating XML parser.	?
xml.parsers.expat.errors		?
xml.parsers.expat.model		?
xml.sax	Package containing SAX2 base classes and convenience functions.	?
xml.sax.handler	Base classes for SAX event handlers.	?
xml.sax.saxutils	Convenience functions and classes for use with SAX.	?
xml.sax.xmlreader	Interface which SAX-compliant XML parsers must implement.	?
xmlrpc		?
xmlrpc.client	XML-RPC client access.	?
xmlrpc.server	Basic XML-RPC server implementations.	?
zipapp	Manage executable Python zip archives	?
zipfile	Read and write ZIP-format archive files.	?
zipimport	Support for importing Python modules from ZIP archives.	?
zlib	Low-level interface to compression and decompression routines compatible with gzip.	✅	built-in
zoneinfo	IANA time zone support	?

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