Python documentation

1. Introduction
2. Built-in Functions
3. Built-in Constants
- 3.1. Constants added by the site module
4. Built-in Types
- 4.1. Truth Value Testing
- 4.2. Boolean Operations — and, or, not
- 4.3. Comparisons
- 4.4. Numeric Types — int, float, complex
- 4.5. Iterator Types
- 4.6. Sequence Types — str, bytes, bytearray, list, tuple, range
- 4.7. Set Types — set, frozenset
- 4.8. Mapping Types — dict
- 4.9. memoryview type
- 4.10. Context Manager Types
- 4.11. Other Built-in Types
- 4.12. Special Attributes
5. Built-in Exceptions
- 5.1. Exception hierarchy
6. String Services
- 6.1. string — Common string operations
- 6.2. re — Regular expression operations
- 6.3. struct — Interpret bytes as packed binary data
- 6.4. difflib — Helpers for computing deltas
- 6.5. textwrap — Text wrapping and filling
- 6.6. codecs — Codec registry and base classes
- 6.7. unicodedata — Unicode Database
- 6.8. stringprep — Internet String Preparation
7. Data Types
- 7.1. datetime — Basic date and time types
- 7.2. calendar — General calendar-related functions
- 7.3. collections — Container datatypes
- 7.4. heapq — Heap queue algorithm
- 7.5. bisect — Array bisection algorithm
- 7.6. array — Efficient arrays of numeric values
- 7.7. sched — Event scheduler
- 7.8. queue — A synchronized queue class
- 7.9. weakref — Weak references
- 7.10. types — Names for built-in types
- 7.11. copy — Shallow and deep copy operations
- 7.12. pprint — Data pretty printer
- 7.13. reprlib — Alternate repr() implementation
8. Numeric and Mathematical Modules
- 8.1. numbers — Numeric abstract base classes
- 8.2. math — Mathematical functions
- 8.3. cmath — Mathematical functions for complex numbers
- 8.4. decimal — Decimal fixed point and floating point arithmetic
- 8.5. fractions — Rational numbers
- 8.6. random — Generate pseudo-random numbers
9. Functional Programming Modules
- 9.1. itertools — Functions creating iterators for efficient looping
- 9.2. functools — Higher-order functions and operations on callable objects
- 9.3. operator — Standard operators as functions
10. File and Directory Access
- 10.1. os.path — Common pathname manipulations
- 10.2. fileinput — Iterate over lines from multiple input streams
- 10.3. stat — Interpreting stat() results
- 10.4. filecmp — File and Directory Comparisons
- 10.5. tempfile — Generate temporary files and directories
- 10.6. glob — Unix style pathname pattern expansion
- 10.7. fnmatch — Unix filename pattern matching
- 10.8. linecache — Random access to text lines
- 10.9. shutil — High-level file operations
- 10.10. macpath — Mac OS 9 path manipulation functions
11. Data Persistence
- 11.1. pickle — Python object serialization
- 11.2. copyreg — Register pickle support functions
- 11.3. shelve — Python object persistence
- 11.4. marshal — Internal Python object serialization
- 11.5. dbm — Interfaces to Unix “databases”
- 11.6. sqlite3 — DB-API 2.0 interface for SQLite databases
12. Data Compression and Archiving
- 12.1. zlib — Compression compatible with gzip
- 12.2. gzip — Support for gzip files
- 12.3. bz2 — Compression compatible with bzip2
- 12.4. zipfile — Work with ZIP archives
- 12.5. tarfile — Read and write tar archive files
13. File Formats
- 13.1. csv — CSV File Reading and Writing
- 13.2. configparser — Configuration file parser
- 13.3. netrc — netrc file processing
- 13.4. xdrlib — Encode and decode XDR data
- 13.5. plistlib — Generate and parse Mac OS X .plist files
14. Cryptographic Services
- 14.1. hashlib — Secure hashes and message digests
- 14.2. hmac — Keyed-Hashing for Message Authentication
15. Generic Operating System Services
- 15.1. os — Miscellaneous operating system interfaces
- 15.2. io — Core tools for working with streams
- 15.3. time — Time access and conversions
- 15.4. argparse — Parser for command-line options, arguments and sub-commands
- 15.5. optparse — Parser for command line options
- 15.6. getopt — C-style parser for command line options
- 15.7. logging — Logging facility for Python
- 15.8. logging.config — Logging configuration
- 15.9. logging.handlers — Logging handlers
- 15.10. getpass — Portable password input
- 15.11. curses — Terminal handling for character-cell displays
- 15.12. curses.textpad — Text input widget for curses programs
- 15.13. curses.ascii — Utilities for ASCII characters
- 15.14. curses.panel — A panel stack extension for curses
- 15.15. platform — Access to underlying platform’s identifying data
- 15.16. errno — Standard errno system symbols
- 15.17. ctypes — A foreign function library for Python
16. Optional Operating System Services
- 16.1. select — Waiting for I/O completion
- 16.2. threading — Thread-based parallelism
- 16.3. multiprocessing — Process-based parallelism
- 16.4. concurrent.futures — Launching parallel tasks
- 16.5. mmap — Memory-mapped file support
- 16.6. readline — GNU readline interface
- 16.7. rlcompleter — Completion function for GNU readline
- 16.8. dummy_threading — Drop-in replacement for the threading module
- 16.9. _thread — Low-level threading API
- 16.10. _dummy_thread — Drop-in replacement for the _thread module
17. Interprocess Communication and Networking
- 17.1. subprocess — Subprocess management
- 17.2. socket — Low-level networking interface
- 17.3. ssl — TLS/SSL wrapper for socket objects
- 17.4. signal — Set handlers for asynchronous events
- 17.5. asyncore — Asynchronous socket handler
- 17.6. asynchat — Asynchronous socket command/response handler
18. Internet Data Handling
- 18.1. email — An email and MIME handling package
- 18.2. json — JSON encoder and decoder
- 18.3. mailcap — Mailcap file handling
- 18.4. mailbox — Manipulate mailboxes in various formats
- 18.5. mimetypes — Map filenames to MIME types
- 18.6. base64 — RFC 3548: Base16, Base32, Base64 Data Encodings
- 18.7. binhex — Encode and decode binhex4 files
- 18.8. binascii — Convert between binary and ASCII
- 18.9. quopri — Encode and decode MIME quoted-printable data
- 18.10. uu — Encode and decode uuencode files
19. Structured Markup Processing Tools
- 19.1. html — HyperText Markup Language support
- 19.2. html.parser — Simple HTML and XHTML parser
- 19.3. html.entities — Definitions of HTML general entities
- 19.4. xml.etree.ElementTree — The ElementTree XML API
- 19.5. xml.dom — The Document Object Model API
- 19.6. xml.dom.minidom — Lightweight DOM implementation
- 19.7. xml.dom.pulldom — Support for building partial DOM trees
- 19.8. xml.sax — Support for SAX2 parsers
- 19.9. xml.sax.handler — Base classes for SAX handlers
- 19.10. xml.sax.saxutils — SAX Utilities
- 19.11. xml.sax.xmlreader — Interface for XML parsers
- 19.12. xml.parsers.expat — Fast XML parsing using Expat
20. Internet Protocols and Support
- 20.1. webbrowser — Convenient Web-browser controller
- 20.2. cgi — Common Gateway Interface support
- 20.3. cgitb — Traceback manager for CGI scripts
- 20.4. wsgiref — WSGI Utilities and Reference Implementation
- 20.5. urllib.request — Extensible library for opening URLs
- 20.6. urllib.response — Response classes used by urllib
- 20.7. urllib.parse — Parse URLs into components
- 20.8. urllib.error — Exception classes raised by urllib.request
- 20.9. urllib.robotparser — Parser for robots.txt
- 20.10. http.client — HTTP protocol client
- 20.11. ftplib — FTP protocol client
- 20.12. poplib — POP3 protocol client
- 20.13. imaplib — IMAP4 protocol client
- 20.14. nntplib — NNTP protocol client
- 20.15. smtplib — SMTP protocol client
- 20.16. smtpd — SMTP Server
- 20.17. telnetlib — Telnet client
- 20.18. uuid — UUID objects according to RFC 4122
- 20.19. socketserver — A framework for network servers
- 20.20. http.server — HTTP servers
- 20.21. http.cookies — HTTP state management
- 20.22. http.cookiejar — Cookie handling for HTTP clients
- 20.23. xmlrpc.client — XML-RPC client access
- 20.24. xmlrpc.server — Basic XML-RPC servers
21. Multimedia Services
- 21.1. audioop — Manipulate raw audio data
- 21.2. aifc — Read and write AIFF and AIFC files
- 21.3. sunau — Read and write Sun AU files
- 21.4. wave — Read and write WAV files
- 21.5. chunk — Read IFF chunked data
- 21.6. colorsys — Conversions between color systems
- 21.7. imghdr — Determine the type of an image
- 21.8. sndhdr — Determine type of sound file
- 21.9. ossaudiodev — Access to OSS-compatible audio devices
22. Internationalization
- 22.1. gettext — Multilingual internationalization services
- 22.2. locale — Internationalization services
23. Program Frameworks
- 23.1. turtle — Turtle graphics
- 23.2. cmd — Support for line-oriented command interpreters
- 23.3. shlex — Simple lexical analysis
24. Graphical User Interfaces with Tk
- 24.1. tkinter — Python interface to Tcl/Tk
- 24.2. tkinter.ttk — Tk themed widgets
- 24.3. tkinter.tix — Extension widgets for Tk
- 24.4. tkinter.scrolledtext — Scrolled Text Widget
- 24.5. IDLE
- 24.6. Other Graphical User Interface Packages
25. Development Tools
- 25.1. pydoc — Documentation generator and online help system
- 25.2. doctest — Test interactive Python examples
- 25.3. unittest — Unit testing framework
- 25.4. 2to3 - Automated Python 2 to 3 code translation
- 25.5. test — Regression tests package for Python
- 25.6. test.support — Utilities for the Python test suite
26. Debugging and Profiling
- 26.1. bdb — Debugger framework
- 26.2. pdb — The Python Debugger
- 26.3. The Python Profilers
- 26.4. timeit — Measure execution time of small code snippets
- 26.5. trace — Trace or track Python statement execution
27. Python Runtime Services
- 27.1. sys — System-specific parameters and functions
- 27.2. sysconfig — Provide access to Python’s configuration information
- 27.3. builtins — Built-in objects
- 27.4. __main__ — Top-level script environment
- 27.5. warnings — Warning control
- 27.6. contextlib — Utilities for with-statement contexts
- 27.7. abc — Abstract Base Classes
- 27.8. atexit — Exit handlers
- 27.9. traceback — Print or retrieve a stack traceback
- 27.10. __future__ — Future statement definitions
- 27.11. gc — Garbage Collector interface
- 27.12. inspect — Inspect live objects
- 27.13. site — Site-specific configuration hook
- 27.14. fpectl — Floating point exception control
- 27.15. distutils — Building and installing Python modules
28. Custom Python Interpreters
- 28.1. code — Interpreter base classes
- 28.2. codeop — Compile Python code
29. Importing Modules
- 29.1. imp — Access the import internals
- 29.2. zipimport — Import modules from Zip archives
- 29.3. pkgutil — Package extension utility
- 29.4. modulefinder — Find modules used by a script
- 29.5. runpy — Locating and executing Python modules
- 29.6. importlib – An implementation of import
30. Python Language Services
- 30.1. parser — Access Python parse trees
- 30.2. ast — Abstract Syntax Trees
- 30.3. symtable — Access to the compiler’s symbol tables
- 30.4. symbol — Constants used with Python parse trees
- 30.5. token — Constants used with Python parse trees
- 30.6. keyword — Testing for Python keywords
- 30.7. tokenize — Tokenizer for Python source
- 30.8. tabnanny — Detection of ambiguous indentation
- 30.9. pyclbr — Python class browser support
- 30.10. py_compile — Compile Python source files
- 30.11. compileall — Byte-compile Python libraries
- 30.12. dis — Disassembler for Python bytecode
- 30.13. pickletools — Tools for pickle developers
31. Miscellaneous Services
- 31.1. formatter — Generic output formatting
32. MS Windows Specific Services
- 32.1. msilib — Read and write Microsoft Installer files
- 32.2. msvcrt – Useful routines from the MS VC++ runtime
- 32.3. winreg – Windows registry access
- 32.4. winsound — Sound-playing interface for Windows
33. Unix Specific Services
- 33.1. posix — The most common POSIX system calls
- 33.2. pwd — The password database
- 33.3. spwd — The shadow password database
- 33.4. grp — The group database
- 33.5. crypt — Function to check Unix passwords
- 33.6. termios — POSIX style tty control
- 33.7. tty — Terminal control functions
- 33.8. pty — Pseudo-terminal utilities
- 33.9. fcntl — The fcntl() and ioctl() system calls
- 33.10. pipes — Interface to shell pipelines
- 33.11. resource — Resource usage information
- 33.12. nis — Interface to Sun’s NIS (Yellow Pages)
- 33.13. syslog — Unix syslog library routines
34. Undocumented Modules
- 34.1. Platform specific modules