https://docs.python.org/3/library/index.html

University of Michigan - Ann Arbor

The Python Standard Library is the collection of modules and packages bundled with every standard Python installation, so they can be imported without any separate install step. It provides built-in support for core data types, exceptions, and functions, as well as more complex tasks such as numeric and mathematical operations, operating-system and file-system interaction, input/output streams, command-line argument handling, and internet/network data access. Its modules are organized by topic, as shown by the 'Python Standard Library Modules' and 'os Module' child nodes.

Python Standard Library

Here are examples of modules within the Python Standard Library:
- random module
- request module
- statistics module
- math module
- cmath module

Python Standard Library Modules

The `os` module is a built-in Python library that provides a portable way to use operating system-dependent functionality. It allows programmers to interact with the underlying operating system that Python is running on, enabling tasks such as creating and removing directories, fetching directory contents, changing the current working directory, and constructing file paths robustly. In the context of data preprocessing, the `os` module is essential for preparing the file system, such as creating destination folders for datasets before writing data files to them.

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