class_docstr: A basic Point class.
class_docstr_tok: ["A","basic","Point","class","."]
code: def rotate_rad(self, angle):
      return Point(
          self.x * math.cos(angle) - self.y * math.sin(angle),
          self.x * math.sin(angle) + self.y * math.cos(angle),
      )
  
imports: import collections
  import math
  import random
label_desc: Use image node_id 18 for calling the Point obj's underlying member method code with example usage: obj.rotate_rad(angle) and returns: Point