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10. Full Grammar specification
While The Python Language Reference describes the exact syntax and semantics of the Python language, this library reference manual describes the standard library that is distributed with Python. It also describes some of
Time complexity of operations on built-in types
string — Common string operations
string.templatelib — Support for template string literals
re — Regular expression operations
difflib — Helpers for computing deltas
textwrap — Text wrapping and filling
unicodedata — Unicode Database
stringprep — Internet String Preparation
readline — GNU readline interface
rlcompleter — Completion function for GNU readline
struct — Interpret bytes as packed binary data
codecs — Codec registry and base classes
datetime — Basic date and time types
zoneinfo — IANA time zone support
calendar — General calendar-related functions
collections — Container datatypes
collections.abc — Abstract Base Classes for Containers
bisect — Array bisection algorithm
array — Efficient arrays of numeric values
types — Dynamic type creation and names for built-in types
copy — Shallow and deep copy operations
reprlib — Alternate repr() implementation
enum — Support for enumerations
graphlib — Functionality to operate with graph-like structures
Numeric and Mathematical Modules
numbers — Numeric abstract base classes
math.integer — integer-specific mathematics functions
cmath — Mathematical functions for complex numbers
decimal — Decimal fixed-point and floating-point arithmetic
random — Generate pseudo-random numbers
statistics — Mathematical statistics functions
Functional Programming Modules
itertools — Functions creating iterators for efficient looping