pandas.pydata.org

Documentation Portal

Official documentation portal for pandas, a fast, powerful, flexible open source Python library for data analysis and manipulation, featuring DataFrame objects, data I/O, reshaping, grouping, time series functionality, and more, maintained by a global community since 2008 and sponsored by NumFOCUS.

ProgrammingPandas Pivot Table: Long to Wide DataFrame Guide

Learn pandas pivot and pivot_table to reshape DataFrames from long to wide format. Handle duplicates with aggfunc (mean, sum), fill NaNs, multi-indexes, crosstab counts, and melt reverse. Code examples for real scenarios.

6 answers• 4 views
ProgrammingPrint NumPy Matrix as Formatted Table with Headers in Python

Learn to print NumPy matrix as a neatly aligned table with variable-length headers like team names. Use tabulate for exact output, pandas DataFrame, or PrettyTable. Right-align numbers, no loops needed. Step-by-step code examples for console tables.

6 answers• 2 views