2 Answers
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You might start here: https://bigdata-madesimple.com/top-20-JUMP_LINK__&&__python__&&__JUMP_LINK-libraries-for-data-science/
Or learn by example from stuff you find on GitHub or elsewhere on the interwebs - I suggest you look for .ipynb files that contain both code and comment in markdown format (anaconda.com jupyter notebooks)...
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To learn data science from python you have to join data science training classes in Noida. For more details visit <a href="http://pythonandmltrainingcourses.com/courses/best-data-science-training-in-noida/