  flavio is an open source tool for phenomenological analyses in flavour
physics and other precision observables in the Standard Model and beyond. It
consists of a library to compute predictions for a plethora of observables in
quark and lepton flavour physics and electroweak precision tests, a database of
experimental measurements of these observables, a statistics package that
allows to construct Bayesian and frequentist likelihoods, and of convenient
plotting and visualization routines. New physics effects are parameterised as
Wilson coefficients of dimension-six operators in the weak effective theory
below the electroweak scale or the Standard Model EFT above it. At present,
observables implemented include numerous rare $B$ decays (including angular
observables of exclusive decays, lepton flavour and lepton universality
violating $B$ decays), meson-antimeson mixing observables in the $B_{d,s}$,
$K$, and $D$ systems, tree-level semi-leptonic $B$, $K$, and $D$ decays
(including possible lepton universality violation), rare $K$ decays, lepton
flavour violating $\tau$ and $\mu$ decays, $Z$ pole electroweak precision
observables, the neutron electric dipole moment, and anomalous magnetic moments
of leptons. Not only central values but also theory uncertainties of all
observables can be computed. Input parameters and their uncertainties can be
easily modified by the user. Written in Python, the code does not require
compilation and can be run in an interactive session. This document gives an
overview of the features as of version 1.0 but does not represent a manual. The
full documentation of the code can be found in its web site.
