Combine Group and Sort
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Data Processing
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Machine Learning
Useful Snippets

11.0.0 JOIN or MERGE two dataframes

Example:

DF = pd.merge(DF1 , DF2
                       , left_on  = 'DF1_ID'   # the ID from the DF on the left
                       , right_on = 'DF2_ID'  # the ID from the DF on the right
                       , how = 'left')               # specify the join type