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Face Detection with Python using OpenCV. Beginner's Guide to Google's Vision API in Python. IUnderstanding Recursive Functions in Python. Decision Tree Classification in Python. And much more!  [DataCamp](  ISSUE #77 — JANUARY 7, 2019  Hi there - in this week's newsletter you will find new tutorials on face detection in Python, Vision API, recursive functions, indexing in SQL, and much more! Save 67% and commit to learning data science and analytics this year. Offer ends January 9th, 2019. [Save Now!](  Podcast  [DataFramed by DataCamp] #DataFramedChallenge Enter the #DataFramedChallenge for a chance to be on an upcoming podcast segment. [Find Out More](  Community Top Posts  [1]( [Face Detection with Python using OpenCV](  PYTHON  |  Posted by parulnith  [Upvotes]( 12 This tutorial will introduce you to the concept of object detection in Python using OpenCV library and how you can utilize it to perform tasks like facial detection.  [2]( [Beginner's Guide to Google's Vision API in Python](  NEURAL NETWORKS  |  Posted by spsayakpaul  [Upvotes]( 10 Learn what Vision API is and all the things that it offers. By the end of this tutorial, you will also learn how you can call Vision API from your Python code.  [3]( [Understanding Recursive Functions in Python](  PYTHON  |  Posted by spsayakpaul  [Upvotes]( 10 Learn about the different aspects of recursive functions and learn how to implement a recursive function in Python from scratch.  [4]( [Decision Tree Classification in Python](  SCIKIT-LEARN  |  Posted by avinashnvln8  [Upvotes]( 9 In this tutorial, learn Decision Tree Classification, attribute selection measures, and how to build and optimize a Decision Tree Classifier using Python Scikit-learn package.  [5]( [Introduction to Indexing in SQL](  SQL  |  Posted by spsayakpaul  [Upvotes]( 9 In this tutorial, learn about indexing in databases and different types of indexing techniques.  [6]( [Hypothesis Testing in Machine Learning](  MACHINE LEARNING  |  Posted by NishantKumarSingh  [Upvotes]( 7 Learn about the basics of Hypothesis Testing and its relevance in Machine Learning.  [7]( [Customer Lifetime Value](  BUSINESS  |  Posted by avinashnvln8  [Upvotes]( 7 In this tutorial, learn how to calculate Customer Lifetime Value in Python using an online retail dataset.   [DataCamp Community]( BY THE COMMUNITY, FOR THE COMMUNITY [Discover](  That's all for now. Have a great week!   [DataCamp](  DataCamp Inc. | 350 Fifth Avenue | Suite 7730 | New York, NY 10118  [Facebook]( [Twitter]( [LinkedIn]( [Instagram]( [YouTube](  [Download on the App Store]( [Get it on Google Play](  [Unsubscribe]( Â