Pandas: How to change value based on condition

The values in a DataFrame column can be changed based on a conditional expression. In this tutorial, we will go through several ways in which you create Pandas conditional columns.

Loading a Sample DataFrame

import pandas as pd
data = {'Stock': ['AAPL', 'IBM', 'MSFT', 'WMT'],
       'Price': [144.8, 141.61, 304.21…