Retrieving values in a Series by label or position

Values in a Series can be retrieved in two general ways: by index label or by 0-based position. Pandas provides you with a number of ways to perform either of these lookups. Let's examine a few of the common techniques.

Lookup by label using the [] operator and the .ix[] property

An implicit label lookup is performed using the [] operator. This operator normally looks up values based upon the given index labels.

Let's start by using the following Series:

A single value can be looked up using just the index label of the desired item:

Multiple items can be retrieved at once using a list of index labels:

We can also look up values using integers that represent positions...