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PythonPandas Series
By Sitraka Forler · Lecturer, Durham Business SchoolUpdated 13 September 2026 About this site
1D labelled array - like a single DataFrame column.
A Series is a one-dimensional labelled array in pandas. The index can be integers, strings, or dates. It supports vectorised operations and aligns automatically on the index during arithmetic.
Example
prices = pd.Series([150, 152, 149], index=dates)