Hyperopt TypeError: 'generator' object is not subscriptable

BUG

最近复用以前的代码,结果发现了一个bug,bug如下:

File "/home/michael/work/oanda/src/oanda/trend_prediction/find_optimal_model.py", line 124, in <module>main()File "/home/michael/work/oanda/src/oanda/trend_prediction/find_optimal_model.py", line 116, in maintrials=trials)File "/home/michael/work/oanda/runtime/lib/python3.5/site-packages/hyperopt/fmin.py", line 307, in fminreturn_argmin=return_argmin,File "/home/michael/work/oanda/runtime/lib/python3.5/site-packages/hyperopt/base.py", line 635, in fminreturn_argmin=return_argmin)File "/home/michael/work/oanda/runtime/lib/python3.5/site-packages/hyperopt/fmin.py", line 314, in fminpass_expr_memo_ctrl=pass_expr_memo_ctrl)File "/home/michael/work/oanda/runtime/lib/python3.5/site-packages/hyperopt/base.py", line 786, in __init__pyll.toposort(self.expr)File "/home/michael/work/oanda/runtime/lib/python3.5/site-packages/hyperopt/pyll/base.py", line 715, in toposortassert order[-1] == exprTypeError: 'generator' object is not subscriptable

原因与解决方案

思考 :考虑到之前我更新了类库,所以最先考虑的是类库问题,但是是在找不到是那个类库的问题,查了Hyperopt源码也没什么用.大概僵持了二十分钟,决定还是去Github查查issues.确实找到了解决方案.
原因与解决底层库networkx更新造成的,Hyperopt不支持networkx-2.0,我换成了1.11版本就OK了.

pip install networkx==1.11

blog :没百度到这个错误,所以写了博客,如文章题目使用关键词Hyperopt+TypeError: 'generator' object is not subscriptable可以找到,算是造福一下小白.

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