code: def shape(self):
      return (self.spmatrix.shape[1],)
  
file_path: mars/mars/lib/sparse/vector.py
imports: from .array import SparseArray, SparseNDArray
  from .core import get_array_module, get_sparse_module, naked, issparse, np, is_cupy
label_desc: Use image node_id 2 for calling the SparseVector obj's underlying member method code with example usage: obj.shape() and returns: self