  We present a calculation of the pion valence quark distribution extracted
using the formalism of reduced Ioffe time pseudo-distributions or more commonly
known as pseudo-PDFs. Our calculation is carried out on two different 2+1
flavor QCD ensembles using the isotropic-clover fermion action, with lattice
dimensions $24^3\times 64$ and $32^3\times 96$ at the lattice spacing of
$a=0.127$ fm, and with the quark mass equivalent to a pion mass of $m_\pi
\simeq 415$ MeV. We incorporate several combinations of smeared-point and
smeared-smeared pion source-sink interpolation fields in obtaining the lattice
QCD matrix elements using the summation method. After one-loop perturbative
matching and combining the pseudo-distributions from these two ensembles, we
extract the pion valence quark distribution using a phenomenological functional
form motivated by the global fits of parton distribution functions. We also
calculate the lowest four moments of the pion quark distribution through the
"OPE without OPE". We present a qualitative comparison between our lattice QCD
extraction of the pion valence quark distribution with that obtained from
global fits and previous lattice QCD calculations.
