ScalPy: A Python Package For Late Time Scalar Field Cosmology
  We present a python package "ScalPy" for studying the late time scalar field
cosmology for a wide variety of scalar field models, namely the quintessence,
tachyon and Galileon model. The package solves the autonomous system of
equations for power law and exponential potential. But it can be easily
generalized to add more complicated potential. For completeness, we also
include the standard parameterization for dark energy models, e.g. the
$\Lambda$CDM, $w$CDM, $w_{0}w_{a}$CDM as well as the GCG parameterization. The
package also solves the linear growth equation for matter perturbations on
sub-horizon scales. All the important observables related to background
universe as well as to the perturbed universe, e.g. luminosity distance
($D_{L}(z)$), angular diameter distance ($D_{A}(z)$), normalized Hubble
parameter ($h(z)$), lookback time ($t_{L}$), equation of state for the dark
energy ($w(z)$), growth rate ($f=\frac{d \ln\delta}{d \ln a}$), linear matter
power spectra ($P(k)$), and its normalization $\sigma_{8}$ can be obtained from
this package. The code is further integrated with the publicly available MCMC
hammer "emcee" to constrain the different models using the presently available
observational data. The code is available online at
\url{https://github.com/sum33it/scalpy}
