Python comes with a collection of built-in data types that make common data-wrangling operations easy. Among them is the list, a simple but versatile collection type.

<type 'str'> >>> In other words, although Python strings generally are thought of as having type str, they equally can be seen as having type bytes. Why would you care? Because it allows you to ...

Identifying causal relationships from observational data is not easy. Still, researchers are often interested in examining the effects of policy changes or other decisions. In those analyses, ...