optunity bug

output.txt

{'a': '2', '': 'abb', 'abb': '4', 'aba': 0.744091796875}
{'a': '2', '': 'aba', 'abb': '3', 'aba': 0.994041796875}
{'a': '1', 'aba': None, 'abb': None, '2': None}
{'a': '2', '': 'abb', 'abb': '4', 'aba': 0.119216796875}
{'a': '2', '': 'aba', 'abb': '3', 'aba': 0.369166796875}
{'a': '2', '': 'aba', 'abb': '4', 'aba': 0.212948046875}
{'a': '2', '': 'abb', 'abb': '3', 'aba': 0.462898046875}
Traceback (most recent call last):
  File "test.py", line 21, in <module>
    optunity.maximize_structured(f, search_space=search, num_evals=10)
  File "/usr/local/lib/python2.7/dist-packages/optunity/api.py", line 370, in maximize_structured
    pmap=pmap, decoder=tree.decode)
  File "/usr/local/lib/python2.7/dist-packages/optunity/api.py", line 266, in optimize
    call_dict = f.call_log.to_dict()
  File "/usr/local/lib/python2.7/dist-packages/optunity/functions.py", line 232, in to_dict
    args[key].append(value)
KeyError:  '2'

test.py

import optunity

def f(**kwargs):
    print kwargs
    return 0.0

search = {
            'a': {
                '1': None,
                '2': {
                    'aba': [0.0001, 0.9999],
                    'abb': {
                        '3': None,
                        '4': None
                    }
                }
            }
         }


optunity.maximize_structured(f, search_space=search, num_evals=10)

Thank you for notifying us. We will look into this ASAP!