Add Python Data Science

[krzjoa]

https://github.com/krzjoa/awesome-python-data-science

Software for Data Analysis, Visualization and Machine Leaning in Python.

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• [x] I have read and understood the contribution guidelines.
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• [x] The list I added has been around for at least 20 days,
• [x] The list I added is a non-generated Markdown file in a GitHub repo,
• [x] The list I added is not a duplicate