class_docstr: A transformation from an input 3D space to an output 3D space defined
  by an affine matrix.
  
  It is defined by the affine matrix , and the name of the input and output
  spaces.
code: def __eq__(self, other):
      return (
          isinstance(other, self.__class__)
          and self.input_space == other.input_space
          and self.output_space == other.output_space
          and np.allclose(self.affine, other.affine)
      )
  
file_path: nipy/nipy/labs/datasets/transforms/affine_transform.py
imports: import numpy
  from .affine_utils import apply_affine
  from .transform import Transform
label_desc: Use image node_id 9 for calling the AffineTransform obj's underlying member method code with example usage: obj.__eq__(other) and returns: unknown