40 Algorithms Every Programmer Should Know

DataFrames

A DataFrame is a data structure used to store tabular data available in Python's pandas package. It is one of the most important data structures for algorithms and is used to process traditional structured data. Let's consider the following table:

id	name	age	decision
1	Fares	32	True
2	Elena	23	False
3	Steven	40	True

Now, let's represent this using a DataFrame.

A simple DataFrame can be created by using the following code:

>>> import pandas as pd>>> df = pd.DataFrame([
...             ['1', 'Fares', 32, True],
...             ['2', 'Elena', 23, False],
...             ['3', 'Steven', 40, True]])
>>> df.columns = ['id', 'name', 'age', 'decision']
>>> df
  id    name  age  decision
0  1   Fares   32      True
1  2   Elena   23     False
2  3  Steven   40      True

Note that, in the preceding ...