Introduction

This chapter describes modules (function and class libraries) that are built into MicroPython. There are a number of categories for the available modules:

  • Modules which implement a subset of standard Python functionality and are not intended to be extended by the user.
  • Modules which implement a subset of Python functionality, with a provision for extension by the user (via Python code).
  • Modules which implement MicroPython extensions to the Python standard libraries.
  • Modules specific to a particular port and thus not portable.

Note about the availability of modules and their contents: This documentation in general aspires to describe all modules and functions/classes which are implemented in MicroPython. However, MicroPython is highly configurable, and each port to a particular board/embedded system makes available only a subset of MicroPython libraries. For officially supported ports, there is an effort to either filter out non-applicable items, or mark individual descriptions with “Availability:” clauses describing which ports provide a given feature. With that in mind, please still be warned that some functions/classes in a module (or even the entire module) described in this documentation may be unavailable in a particular build of MicroPython on a particular board. The best place to find general information of the availability/non-availability of a particular feature is the “General Information” section which contains information pertaining to a specific port.

Beyond the built-in libraries described in this documentation, many more modules from the Python standard library, as well as further MicroPython extensions to it, can be found in the micropython-lib repository.

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