Series

A Series is a data structure used to store fields, containing all elements of a field with the requirement that all elements are of the same type. Essentially, a Series is a ChunkedArray, which is an array stored in chunks. In Polars, data within a Series is stored in the form of chunks, where each chunk is an independent array. This design enhances data processing efficiency, especially during large-scale data operations, as chunked data can be processed in parallel.