Pandas: Real-World Data Analysis

Loading & Selecting Data

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I/O: Reading and Writing Files

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IN THIS LESSON

YOU’RE LEARNING TO

↗learner can read CSV, Excel, and JSON files into a DataFrame

↗learner can write a DataFrame back to CSV and JSON

↗learner can select columns by name and by list

↗learner can use loc (label-based) and iloc (position-based) correctly

↗learner can filter rows with boolean masks and with query()

↗learner can add, drop, and rename columns safely without chained-assignment bugs