Standard Library Coverage Status Python ships with over 230 built-in modules across its standard library. This page tracks what ProjectPy currently documents, what's partially covered, and what's planned for future contribution.
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Every planned module is an opportunity to contribute! See our How to Contribute guide to get started — no prior open-source experience required.
Legend Badge Meaning Has a dedicated guide with examples on this site Mentioned or briefly covered within another guide No documentation exists here yet — contribute! Removed from CPython in 3.11–3.14 (PEP 594 dead batteries)
Text Processing Module Status Guide stringString Module reRegular Expressions difflibMentioned in overview textwrapMentioned in overview unicodedataUnicode HOWTO readline— rlcompleter—
Binary Data Services Module Status Guide struct— codecsUnicode HOWTO
Data Types & Collections Numeric and Mathematical Modules Module Status Guide numbers— mathMath, Random, Statistics cmathMath, Random, Statistics decimalMath, Random, Statistics fractionsMath, Random, Statistics randomMath, Random, Statistics statisticsMath, Random, Statistics
Functional Programming Modules File and Directory Access Data Persistence and Databases Data Compression and Archiving Module Status Guide zlib— gzip— bz2— lzma— zipfile— tarfile—
Module Status Guide csvData Formats configparser— tomllib— netrc— plistlib—
Cryptographic Services Generic Operating System Services Concurrent Execution Networking and Interprocess Communication Module Status Guide asyncioAsyncio and Concurrency socketNetworking ssl— select— selectors— signal— mmap—
Internet Protocols and Support Module Status Guide urllibNetworking urllib.requesturllib HOWTO urllib.parseNetworking urllib.errorurllib HOWTO http.clientNetworking http.serverNetworking http.cookies— http.cookiejar— jsonData Formats html— html.parser— xml.etree.ElementTreeIO and Serialization xml.dom— xml.sax— email— smtplib— imaplib— ftplib— poplib— uuid— ipaddress—
Debugging and Profiling Testing Software Packaging and Distribution Module Status Guide venvVirtual Environments zipimport— importlib— importlib.metadata— importlib.resources— pkgutil—
Python Runtime Services Module Status Guide typingTyping Module typing_extensions— annotationlib— ast— dis— token— tokenize— symtable— compileall— py_compile— code— codeop—
Superseded & Removed Modules Removed from CPython
These modules were removed as part of PEP 594 and related deprecation cycles. Do not use them in new code.
Module Status Removed In aifcPython 3.13 audioopPython 3.13 cgiPython 3.13 cgitbPython 3.13 chunkPython 3.13 cryptPython 3.13 imghdrPython 3.13 mailcapPython 3.13 msilibPython 3.13 nisPython 3.13 nntplibPython 3.13 ossaudiodevPython 3.13 pipesPython 3.13 sndhdrPython 3.13 spwdPython 3.13 sunauPython 3.13 telnetlibPython 3.13 uuPython 3.13 xdrlibPython 3.13 smtpdPython 3.12
Want to Contribute a Missing Module? Missing modules are great first contributions. Here's what a good module guide includes:
What the module does — a plain-English explanationWhen you'd use it — real-world use caseWorked examples — copyable, runnable Python 3.12+ codeCommon pitfalls — "gotchas" that trip up beginnersLinks — reference to the official CPython docs How to Contribute Guide