
Python for Algorithmic Trading Cookbook
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The Index is an immutable sequence that’s used for indexing and alignment that serves as the label or key for rows in the DataFrame or elements in a series. It allows for fast lookup and relational operations and as of pandas version 2, it can contain values of any type, including integers, strings, and even tuples. Indexes in pandas are immutable, which makes them safe to share across multiple DataFrames or Series. They also have several built-in methods for common operations, such as sorting, grouping, and set operations such as union and intersection. pandas supports multiple indexes, allowing for complex, hierarchical data organization. This feature is particularly useful when dealing with high-dimensional data such as option chains. We’ll see examples of MultiIndexes later in this chapter.
There are seven types of pandas indexes. The differences are dependent on the type of data used to create the index. For example, an Int64Index...