code: def leaves_iter(self):
      if self.isleaf():
          yield self
      else:
          for c in self.children:
              for l in c.leaves_iter():
                  yield l
  
imports: import re
  import codecs
  import random
  from collections import Counter
label_desc: Use image node_id 5 for calling the Tree obj's underlying member method code with example usage: obj.leaves_iter() without return types