BUG: duplicate indexing with embedded non-orderables
#### code below is scene that issue happened. 
```python
 for user_id, row in pending_data_df.iterrows():

        df = DataFrame(
            columns=[
                Names.call.same_call_counts,
                Names.call.phonebook_detail
            ],
            index=[user_id]
        )

        phoneBookPath = row[Names.app.phonebookpath]
        call_number_list = row.get(Names.call.call_number_list)
```
#### Problem description
#### when I wanted to get a set from a Series , it happended.
#### it has worked well for a long time,but suddenly it broke out. raise Traceback like this: 

Traceback (most recent call last):
  File "/usr/local/lib/python3.5/threading.py", line 914, in _bootstrap_inner
    self.run()
  File "/home/datascience/zh/suijiesuihuan/datascience/my_threads.py", line 87, in run
    ret_data, result = make_decision(int(self.layerId), df_input)
  File "/home/datascience/zh/suijiesuihuan/datascience/layered_decision.py", line 52, in make_decision
    data_df, result_df = load_features_group_loader(features_group_loader_id, mocking)(data_df)
  File "/home/datascience/zh/suijiesuihuan/datascience/dynamic_content_loader.py", line 166, in inner
    return load_and_make_decision(data_df, config_new)
  File "/home/datascience/zh/suijiesuihuan/datascience/dynamic_content_loader.py", line 111, in load_and_make_decision
    new_feature_group_df, error_df = _load_data(pending_df, features_loader_id, features_loader, mocking)
  File "/home/datascience/zh/suijiesuihuan/datascience/dynamic_content_loader.py", line 76, in _load_data
    data_df, result_df = features_loader(data_df)
  File "/home/datascience/zh/suijiesuihuan/dynamic_contents/feature_group_loader/feature_group_loader_0003/feature_group_loader.py", line 55, in load
    call_number_list = row.get(Names.call.call_number_list)
  File "/home/datascience/zh/venv/lib/python3.5/site-packages/pandas/core/generic.py", line 1633, in get
    return self[key]
  File "/home/datascience/zh/venv/lib/python3.5/site-packages/pandas/core/series.py", line 611, in __getitem__
    dtype=self.dtype).__finalize__(self)
  File "/home/datascience/zh/venv/lib/python3.5/site-packages/pandas/core/series.py", line 227, in __init__
    "".format(data.__class__.__name__))
TypeError: 'set' type is unordered
 
#### someone knows what happened?
