错误原因：版本原因，’tensorflow.contrib’只有1.1x系列有。
报错信息：ModuleNotFoundError: No module named ‘tensorflow.contrib’或者module ‘tensorflow’ has no attribute ‘merge_summary’。
解决方法：
I had a similar problem and I solved it by:-
- upgrading python to 3.6
- pip uninstall tflearn
- pip install git+https://github.com/tflearn/tflearn.git
- As suggested in another solution tensorflow 2.0.0 does not support tflearn so I installed tensorflow==1.14.0
解决方案原地址
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