code: def is_scalar(vect_array):
      """Test if a "fully-vectorized" array represents a scalar.
  
      Parameters
      ----------
      vect_array :  array-like
          Array to be tested.
  
      Returns
      -------
      is_scalar : bool
          Boolean determining if vect_array is a fully-vectorized scalar.
      """
      if isinstance(vect_array, tuple):
          return False
      if isinstance(vect_array, list):
          return False
  
      has_ndim_2 = vect_array.ndim == 2
      if not has_ndim_2:
          return False
      has_singleton_dim_1 = vect_array.shape[1] == 1
      return has_singleton_dim_1
  
file_path: geomstats/geomstats/vectorization.py
imports: import math
  import geomstats.backend
label_desc: Use image node_id 16 for calling a global function with example usage: is_scalar(vect_array) and returns: has_singleton_dim_1, False, False, False