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Libraries
Libraries in programming are collections of modules that provide sets of functions and classes to perform various tasks or operations. These modules are essentially files containing pre-written code that developers can leverage to avoid "reinventing the wheel". For instance, the math library in Python offers mathematical functions and constants, while the datetime library provides classes and functions for manipulating dates and times. To use a library in Python it must be imported in order to access the functions and other resources contained in the library.
On point of possible confusion is that is the difference between a function and a library? A function is a block of reusable code that performs a specific task within a program, whereas a library is a collection of related modules and functions that are external to a program. Think of a function as a single tool, like a screwdriver, and a library as a toolbox filled with various tools. While a function handles a specific operation, a library offers a suite of operations, often centered around a particular theme or domain. Both are integral to efficient programming, with functions providing the means to execute tasks and libraries offering a comprehensive set of tools and utilities for broader functionalities.