A library in Python is essentially a bundle of pre-compiled code of related programming modules. Python libraries have made the lives of programmers easier beyond words. Libraries are always available to developers, so you can repeatedly reuse these collections of codes in any project to achieve specific functionalities. It saves a lot of time that would otherwise have been wasted in frequently writing the same lines of code to achieve the same outcome. Apart from pre-compiled lines of code, Python libraries also contain data for specific configurations, documentation, classes, message templates, values, and many other information that developers might need from time to time.