Related

Change Data Type

pandas

Convert Series to specified dtype

Convert to Datetime

pandas

Convert column to datetime format

Memory Usage

pandas

Check DataFrame memory usage

pandas/categorical

Categorical Data

Convert column to categorical dtype

pandas
categorical
optimize

Command

df["col"].astype("category")

Explanation

Categorical data saves memory and improves performance for repeated string values.

Examples

Convert column to categorical

df["col"] = df["col"].astype("category")

More

Plot Data

pandas

Plot DataFrame or Series

Pivot Wider

pandas

Reshape data from long to wide format

Read CSV

pandas

Read a CSV file into a DataFrame