class_docstr: A simple default backend that stores the chain in memory
class_docstr_tok: ["A","simple","default","backend","that","stores","the","chain","in","memory"]
code: def __init__(self, dtype=None):
      self.initialized = False
      if dtype is None:
          dtype = np.float64
      self.dtype = dtype
  
imports: import numpy
  from ..None import autocorr
  from ..state import State
label_desc: Use image node_id 1 to create a new Backend object from inherited base classes: object with example: obj = Backend(dtype)