This is a repository of packages designed to be useful for writing MicroPython applications.
The packages here fall into categories corresponding to the four top-level directories:
python-stdlib: Compatible versions of modules from The Python Standard Library. These should be drop-in replacements for the corresponding Python modules, although many have reduced functionality or missing methods or classes (which may not be an issue for most cases).
python-ecosys: Compatible, but reduced-functionality versions of packages from the wider Python ecosystem. For example, a package that might be found in the Python Package Index.
micropython: MicroPython-specific packages that do not have equivalents in other Python environments. This includes drivers for hardware (e.g. sensors, peripherals, or displays), libraries to work with embedded functionality (e.g. bluetooth), or MicroPython-specific packages that do not have equivalents in CPython.
unix-ffi: These packages are specifically for the MicroPython Unix port and provide access to operating-system and third-party libraries via FFI, or functionality that is not useful for non-Unix ports.
To install a micropython-lib package, there are four main options. For more information see the Package management documentation documentation.
On a network-enabled device
As of MicroPython v1.20 (and nightly builds since October 2022), boards
with WiFi and Ethernet support include the
mip package manager.
>>> import mip >>> mip.install("package-name")
mpremote from your PC
mpremote is the officially-supported tool for interacting with a MicroPython
device and, since v0.4.0, support for installing micropython-lib packages is
provided by using the
$ mpremote connect /dev/ttyUSB0 mip install package-name
See the mpremote documentation.
Freeze into your firmware
If you are building your own firmware, all packages in this repository include
manifest.py that can be included into your board manifest via the
require() command. See Manifest files for
Copy the files manually
Many micropython-lib packages are just single-file modules, and you can
quickly get started by copying the relevant Python file to your device. For
example, to add the
base64 library, you can directly copy
python-stdlib/base64/base64.py to the
lib directory on your device.
This can be done using
mpremote, for example:
$ mpremote connect /dev/ttyUSB0 cp python-stdlib/base64/base64.py :/lib
For packages that are implemented as a package directory, you'll need to copy
the directory instead. For example, to add
collections-defaultdict/collections/defaultdict.py to a directory named
lib/collections on your device.
Note that unlike the other three approaches based on
you will need to manually resolve dependencies. You can inspect the relevant
manifest.py file to view the list of dependencies for a given package.
The MicroPython Wiki is also used for micropython-lib.
For bugs and feature requests, please raise an issue.
We welcome pull requests to add new packages, fix bugs, or add features. Please be sure to follow the Contributor's Guidelines & Code Conventions. Note that MicroPython is licensed under the MIT license and all contributions should follow this license.
Future plans (and new contributor ideas)
- Develop a set of example programs using these packages.
- Develop more MicroPython packages for common tasks.
- Expand unit testing coverage.
- Add support for referencing remote/third-party repositories.
Notes on terminology
The terms library, package, and module are overloaded and lead to some confusion. The interpretation used in by the MicroPython project is that:
A library is a collection of installable packages, e.g. The Python Standard Library, or micropython-lib.
A package can refer to two things. The first meaning, "library package", is
something that can be installed from a library, e.g. via
CPython/PyPI). Packages provide modules that can be imported. The ambiguity
here is that the module provided by the package does not necessarily have to
have the same name, e.g. the
pyjwt package provides the
jwt module. In
pyserial package providing the
serial module is another
A module is something that can be imported. For example, "the os module".
A module can be implemented either as a single file, typically also called
a module or "single-file module", or as a package (the second meaning),
which in this context means a directory containing multiple
(usually at least an
In micropython-lib, we also have the concept of an extension package which
is a library package that extends the functionality of another package, by
adding additional files to the same package directory. These packages have
hyphenated names. For example, the
collections-defaultdict package extends
collections package to add the
defaultdict class to the