  In this paper, we present continuous-stage partitioned Runge-Kutta (csPRK)
methods for energy-preserving integration of Hamiltonian systems. A sufficient
condition for the energy preservation of the csPRK methods is derived. It is
shown that the presented condition contains the existing condition for
energy-preserving continuous-stage Runge-Kutta methods as a special case. A
noticeable and interesting result is that when we use the simplifying
assumptions of order conditions and the normalized shifted Legendre polynomials
for constructing high-order energy-preserving csPRK methods, both the Butcher
"weight" coefficients $B_\tau$ and $\widehat{B}_\tau$ must be equal to $1$. As
illustrative examples, new energy-preserving integrators are acquired by virtue
of the presented condition, and for the sake of verifying our theoretical
results, some numerical experiments are reported.
