diff --git a/sources/tech/20181119 9 obscure Python libraries for data science.md b/sources/tech/20181119 9 obscure Python libraries for data science.md
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+heguangzhi  Translating 
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 9 obscure Python libraries for data science
 ======
 Go beyond pandas, scikit-learn, and matplotlib and learn some new tricks for doing data science in Python.