Columns Types, .assign, and Memory Usage
Explore how to convert and optimize column types within pandas DataFrames using astype and assign methods. Understand memory usage reduction techniques and avoid common pandas bugs by mastering the assign method. This lesson guides you through efficient data type management for smoother data manipulation.
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Conversion methods
There are various methods and functions for changing the types of a Series in pandas. We can call astype to update column types. Or we can use the assign method to return a new DataFrame with the updated type.
The astype method allows us to specify the types of each column with a dictionary.
The assign method is a key method to master. We specify the name of a column with a keyword argument. If the argument name is an existing column, it will ...