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PYSPARK • LESSON 10

Inspect Column Names

How can we programmatically retrieve the list of column names in a DataFrame?

Beginner2 Minutes135 XP
🤔 THE QUESTION

How can we programmatically retrieve the list of column names in a DataFrame?

💡 WHAT IS IT?

The .columns property returns a Python list containing all column header names in order.

🎯 WHAT IS IT USED FOR?

Schema validation, dynamic column loops, and verifying expected headers before running pipeline stages.

💻 EXAMPLE
print(df.columns)

🎯 Mission Objectives

Practice typing production-grade PySpark code for Inspect Column Names.

  • Access the .columns attribute
  • Inspect schema header list
  • Enable automated column validation