code: def __str__(self):
      return (
          "BoundingBox(north=%.6f, west=%.6f, south=%.6f, east=%.6f)"
          % (self.north, self.west, self.south, self.east)
      )
  
imports: from collections import defaultdict
  import csv
  from datetime import datetime
  import json
  from math import radians, cos, sin, asin, sqrt
  import urllib2
  import numpy
label_desc: Use image node_id 4 for calling the BoundingBox obj's underlying member method code with example usage: obj.__str__() and returns: unknown