






'''simple docstring'''






from ..utils import (
    OptionalDependencyNotAvailable,
    is_flax_available,
    is_scipy_available,
    is_torch_available,
    is_torchsde_available,
)


try:
      if not is_torch_available():
            raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
      from ..utils.dummy_pt_objects import *  # noqa F403
else:
      from .scheduling_consistency_models import CMStochasticIterativeScheduler
      from .scheduling_ddim import DDIMScheduler
      from .scheduling_ddim_inverse import DDIMInverseScheduler
      from .scheduling_ddim_parallel import DDIMParallelScheduler
      from .scheduling_ddpm import DDPMScheduler
      from .scheduling_ddpm_parallel import DDPMParallelScheduler
      from .scheduling_deis_multistep import DEISMultistepScheduler
      from .scheduling_dpmsolver_multistep import DPMSolverMultistepScheduler
      from .scheduling_dpmsolver_multistep_inverse import DPMSolverMultistepInverseScheduler
      from .scheduling_dpmsolver_singlestep import DPMSolverSinglestepScheduler
      from .scheduling_euler_ancestral_discrete import EulerAncestralDiscreteScheduler
      from .scheduling_euler_discrete import EulerDiscreteScheduler
      from .scheduling_heun_discrete import HeunDiscreteScheduler
      from .scheduling_ipndm import IPNDMScheduler
      from .scheduling_k_dpm_2_ancestral_discrete import KDPMaAncestralDiscreteScheduler
      from .scheduling_k_dpm_2_discrete import KDPMaDiscreteScheduler
      from .scheduling_karras_ve import KarrasVeScheduler
      from .scheduling_pndm import PNDMScheduler
      from .scheduling_repaint import RePaintScheduler
      from .scheduling_sde_ve import ScoreSdeVeScheduler
      from .scheduling_sde_vp import ScoreSdeVpScheduler
      from .scheduling_unclip import UnCLIPScheduler
      from .scheduling_unipc_multistep import UniPCMultistepScheduler
      from .scheduling_utils import KarrasDiffusionSchedulers, SchedulerMixin
      from .scheduling_vq_diffusion import VQDiffusionScheduler

try:
      if not is_flax_available():
            raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
      from ..utils.dummy_flax_objects import *  # noqa F403
else:
      from .scheduling_ddim_flax import FlaxDDIMScheduler
      from .scheduling_ddpm_flax import FlaxDDPMScheduler
      from .scheduling_dpmsolver_multistep_flax import FlaxDPMSolverMultistepScheduler
      from .scheduling_karras_ve_flax import FlaxKarrasVeScheduler
      from .scheduling_lms_discrete_flax import FlaxLMSDiscreteScheduler
      from .scheduling_pndm_flax import FlaxPNDMScheduler
      from .scheduling_sde_ve_flax import FlaxScoreSdeVeScheduler
      from .scheduling_utils_flax import (
          FlaxKarrasDiffusionSchedulers,
          FlaxSchedulerMixin,
          FlaxSchedulerOutput,
          broadcast_to_shape_from_left,
      )


try:
      if not (is_torch_available() and is_scipy_available()):
            raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
      from ..utils.dummy_torch_and_scipy_objects import *  # noqa F403
else:
      from .scheduling_lms_discrete import LMSDiscreteScheduler

try:
      if not (is_torch_available() and is_torchsde_available()):
            raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
      from ..utils.dummy_torch_and_torchsde_objects import *  # noqa F403
else:
      from .scheduling_dpmsolver_sde import DPMSolverSDEScheduler







'''simple docstring'''






def        _SCREAMING_SNAKE_CASE  (				A  :       float  ,		A  :       list[float]  )    -> float:







   """simple docstring"""
   if discount_rate < 0:
      raise ValueError('Discount rate cannot be negative'  )
   if not cash_flows:
      raise ValueError('Cash flows list cannot be empty'  )
   __snake_case				:      List[str]     							= sum(
       cash_flow / ((1 + discount_rate) ** i) for i, cash_flow in enumerate(A  )  )
   return round(A  ,		ndigits=2  )


if __name__ == "__main__":
      import doctest

      doctest.testmod()