A verifiable quantum advantage towards real world applications: Quantum Echoes 
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      cirq.qid_shape
  
      
    
  
  
  
  
  
    
  
  
    
    
Returns a tuple describing the number of quantum levels of each qubit/qudit/qid val operates on.
cirq.qid_shape(
    val: Any, default: TDefault = RaiseTypeErrorIfNotProvided
) -> (tuple[int, ...] | TDefault)
Used in the notebooks
| Args | 
|---|
| val | The value to get the shape of. | 
| default | Determines the fallback behavior when valdoesn't have
a shape. Ifdefaultis not set, a TypeError is raised. If
default is set to a value, that value is returned. | 
| Returns | 
|---|
| If valhas a_qid_shape_method and its result is not
NotImplemented, that result is returned. Otherwise, ifvalhas a_num_qubits_method, the shape withnum_qubitsqubits is returned
e.g.(2,)*num_qubits. If neither method returns a value other than
NotImplemented and a default value was specified, the default value is
returned. | 
| Raises | 
|---|
| TypeError | valdoesn't have either a_qid_shape_or a_num_qubits_method (or they returned NotImplemented) and also no default value
was specified. | 
  
  
 
  
    
    
      
    
    
  
       
    
    
  
  
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  Last updated 2025-08-14 UTC.
  
  
  
    
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