python2.7 tsfresh:ImportError:无法导入名称默认值

Question

在Python2.7中

我犯了个错误

   import tsfresh.feature_extraction.feature_calculators as ts_feature_calculators
  File "/Users/wxy/venv/lib/python3.6/anaconda3/envs/py27/lib/python2.7/site-packages/tsfresh/__init__.py", line 33, in <module>
    from tsfresh.convenience.relevant_extraction import extract_relevant_features
  File "/Users/wxy/venv/lib/python3.6/anaconda3/envs/py27/lib/python2.7/site-packages/tsfresh/convenience/relevant_extraction.py", line 7, in <module>
    from tsfresh.feature_extraction import extract_features
  File "/Users/wxy/venv/lib/python3.6/anaconda3/envs/py27/lib/python2.7/site-packages/tsfresh/feature_extraction/__init__.py", line 5, in <module>
    from tsfresh.feature_extraction.extraction import extract_features
  File "/Users/wxy/venv/lib/python3.6/anaconda3/envs/py27/lib/python2.7/site-packages/tsfresh/feature_extraction/extraction.py", line 17, in <module>
    from tsfresh import defaults
ImportError: cannot import name defaults

我该如何解决这个问题