Mpmath requires at least Python 3.9. It has been tested with CPython 3.9 through 3.14 and for PyPy 3.10
Releases are registered on PyPI, so you can install latest release of the Mpmath with pip:
pip install mpmath
or some specific version with:
pip install mpmath==1.3.0
You can install also extra dependencies, e.g. gmpy2 support:
pip install mpmath[gmpy2]
Tip
Use :mod:`venv` to create isolated Python environment first, instead of installing everything system-wide.
Debian and Ubuntu users can install mpmath with:
sudo apt install python3-mpmath
See debian and ubuntu package information; please verify that you are getting the latest version.
Mpmath is provided in the "Science" repository for all recent versions of openSUSE. To add this repository to the YAST software management tool, see https://en.opensuse.org/SDB:Add_package_repositories
Look up https://download.opensuse.org/repositories/science/ for a list of supported OpenSUSE versions.
If you are a developer or like to get the latest updates as they come, be sure to install from git:
git clone git://github.com/mpmath/mpmath.git cd mpmath pip install -e .[develop,docs]
After the setup has completed, you should be able to fire up the interactive Python interpreter and do the following:
>>> from mpmath import mp, mpf, pi
>>> mp.dps = 50
>>> print(mpf(2) ** mpf('0.5'))
1.4142135623730950488016887242096980785696718753769
>>> print(2*pi)
6.2831853071795864769252867665590057683943387987502
If gmpy2 version 2.2.0 or later is installed on your system, mpmath will automatically detect it and transparently use gmpy2 integers instead of Python integers. This makes mpmath much faster, especially at high precision (approximately above 100 digits).
To verify that mpmath uses gmpy2, check the internal variable BACKEND is
equal to 'gmpy'.
Using the gmpy2 backend can be disabled by setting the MPMATH_NOGMPY
environment variable. Note that the mode cannot be switched during runtime;
mpmath must be re-imported for this change to take effect.
It is recommended that you run mpmath's full set of unit tests to make sure
everything works. The pytest is a required dependence
for testing. The tests are located in the tests subdirectory of the mpmath
source tree. They can be run using:
pytest --pyargs mpmath
Developers may run tests from the source tree with:
pytest
If any test fails, please send a detailed bug report to the mpmath issue tracker.
If you downloaded the source package, the text source for these documentation
pages is included in the docs directory. The documentation can be compiled
to pretty HTML using Sphinx:
sphinx-build --color -W --keep-going -b html docs build/sphinx/html
The create a PDF:
sphinx-build --color -W --keep-going -b latex docs build/sphinx/latex make -C build/sphinx/latex all-pdf
Some additional demo scripts are available in the demo directory included
in the source package.
Mpmath is a standard package in Sage, in version 4.1 or later of Sage. Mpmath is preinstalled a regular Python module, and can be imported as usual within Sage:
---------------------------------------------------------------------- | Sage Version 4.1, Release Date: 2009-07-09 | | Type notebook() for the GUI, and license() for information. | ---------------------------------------------------------------------- sage: import mpmath sage: mpmath.mp.dps = 50 sage: print(mpmath.mpf(2) ** 0.5) 1.4142135623730950488016887242096980785696718753769
In Sage, mpmath can alternatively be imported via the interface library
sage.libs.mpmath.all. For example:
sage: import sage.libs.mpmath.all as mpmath
This module provides a few extra conversion functions, including mpmath.call()
which permits calling any mpmath function with Sage numbers as input, and getting
Sage RealNumber or ComplexNumber instances
with the appropriate precision back:
sage: w = mpmath.call(mpmath.erf, 2+3*I, prec=100) sage: w -20.829461427614568389103088452 + 8.6873182714701631444280787545*I sage: type(w) <type 'sage.rings.complex_number.ComplexNumber'> sage: w.prec() 100
See the help for sage.libs.mpmath.all for further information.