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Tag: agg

Python Pandas Groupby Tutorial

In this Pandas group by we are going to learn how to organize PandasĀ dataframes by groups. More specifically, we are going to learn how to group by one and multiple columns. Furthermore, we are going to learn how calculate some basics summary statistics (e.g., mean, median), convert Pandas groupby to dataframe, calculate the percentage of observations in each group, and many more useful things.

First of all we are going to import pandas as pd, and read a CSV file, using the read_csv method, to a dataframe. In the example below, we useĀ index_col=0 because the first row in the dataset is the index column.