class_docstr: Search space with the requirement of having a discrete number of options, such that it is possible to exhaust the search space.
class_docstr_tok: ["Search","space","with","the","requirement","of","having","a","discrete","number","of","options",",","such","that","it","is","possible","to","exhaust","the","search","space","."]
docstr: Returns the number of unique spaces within the discrete search space.
docstr_tok: ["Returns","the","number","of","unique","spaces","within","the","discrete","search","space","."]
code: def __len__(self) -> int:
      """Returns the number of unique spaces within the discrete search space."""
      raise NotImplementedError
  
label_desc: Use image node_id 1 for calling the DiscreteSpace obj's underlying member method code with example usage: obj.__len__() without return types