class_docstr: A single keypoint (aka landmark) on an image.
  
  Parameters
  ----------
  x : number
      Coordinate of the keypoint on the x axis.
  
  y : number
      Coordinate of the keypoint on the y axis.
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docstr: Move the keypoint around on an image in-place.
  
  Added in 0.4.0.
  
  Parameters
  ----------
  x : number, optional
      Move by this value on the x axis.
  
  y : number, optional
      Move by this value on the y axis.
  
  Returns
  -------
  imgaug.augmentables.kps.Keypoint
      Keypoint object with new coordinates.
      The instance of the keypoint may have been modified in-place.
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code: def shift_(self, x=0, y=0):
      """Move the keypoint around on an image in-place.
  
      Added in 0.4.0.
  
      Parameters
      ----------
      x : number, optional
          Move by this value on the x axis.
  
      y : number, optional
          Move by this value on the y axis.
  
      Returns
      -------
      imgaug.augmentables.kps.Keypoint
          Keypoint object with new coordinates.
          The instance of the keypoint may have been modified in-place.
  
      """
      self.x += x
      self.y += y
      return self
  
imports: from __future__ import print_function, division, absolute_import
  import numpy
  import scipy.spatial.distance
  import six.moves
  from ..None import imgaug
  from .base import IAugmentable
  from .utils import normalize_imglike_shape, project_coords, _remove_out_of_image_fraction_, _handle_on_image_shape
label_desc: Use image node_id 11 for calling the Keypoint obj's underlying member method code with example usage: obj.shift_(x, y) and returns: self