micropython-lib/README.md

micropython-lib

micropython-lib is a project to develop a non-monolothic standard library for MicroPython (https://github.com/micropython/micropython). Each module or package is available as a separate distribution package from PyPI. Each module comes from one of the following sources (and thus each module has its own licensing terms):

• written from scratch specifically for MicroPython
• ported from CPython
• ported from some other Python implementation, e.g. PyPy
• some modules actually aren't implemented yet and are dummy

Note that the main target of micropython-lib is a "Unix" port of MicroPython. Actual system requirements vary per module. For example, if a module is not related to I/O, it may work without problems on bare-metal ports too (e.g. pyboard).

Usage

micropython-lib packages are published on PyPI (Python Package Index), the standard Python community package repository: http://pypi.python.org/ . On PyPI, you can search for MicroPython related packages and read additional package information. By convention, all micropython-lib package names are prefixed with "micropython-" (the reverse is not true - some package starting with "micropython-" aren't part of micropython-lib and were released by 3rd parties).

Browse available packages via this URL.

To install packages from PyPI for usage on your local system, use the upip tool, which is MicroPython's native package manager, similar to pip, which is used to install packages for CPython. upip is bundled with MicroPython "Unix" port (i.e. if you build "Unix" port, you automatically have upip tool). Following examples assume that micropython binary is available on your PATH:

$ micropython -m upip install micropython-pystone
...
$ micropython
>>> import pystone
>>> pystone.main()
Pystone(1.2) time for 50000 passes = 0.534
This machine benchmarks at 93633 pystones/second

Run micropython -m upip --help for more information about upip.

Development

To install modules during development, use make install. By default, all available packages will be installed. To install a specific module, add the MOD=<module> parameter to the end of the make install command.

Links

If you would like to trace evolution of MicroPython packaging support, you may find following links useful (note that they may contain outdated information):

• https://github.com/micropython/micropython/issues/405
• http://forum.micropython.org/viewtopic.php?f=5&t=70

Guidelines for packaging MicroPython modules for PyPI:

• https://github.com/micropython/micropython/issues/413